1. A clamping tool for connecting coaxial cable and terminal comprising:
a connecting frame, top of the connecting frame having an aperture and two upright part, two sides of the connecting frame having respectively two parallel ellipse holes, two sides of each upright part having respectively a pivot hole;
two clamping handles, one end of the clamping handle being pivoted on said pivoting hole, two sides of the clamping handle having respectively a connecting hole;
four connecting links, one end of the connecting link being pivoted on said connecting hole and the other end being pivoted on said ellipse hole;
a sliding seat fixed on said ellipse holes and said other end of the four connecting links, top and bottom of the sliding seat having respectively a screw hole and an opposite locating hole;
a clamping head screwed into said screw hole, the clamping head having a central hole;
a guiding tube having a guiding hole, one end of the guiding tube being inserted through said central hole of the clamping head and fixed on said locating hole, the central conductor of coaxial cable can be inserted into the guiding hole, once pressing the clamping handles inwardly, said four connecting links can move along said ellipse holes to push said sliding seat and said clamping head upwardly to clamp the terminal until it is connected with the coaxial cable, further, the central conductor of coaxial cable can be kept on the straight to prevent it from being twisted in clamping process.
2. A clamping tool for connecting coaxial cable and terminal as claimed in claim 1, wherein the top of each said upright part having respectively a clip piece, the clip piece being pivoted respectively on said pivot hole and can be moved toward to each other when pressing said clamping handles inwardly, the near end of the two clip pieces having respectively a semicircular aperture which can form a circular aperture to clip the coaxial cable and press the top of terminal in clamping process.
3. A clamping tool for connecting coaxial cable and terminal as claimed in claim 1, between said screw hole and said locating hole have a tension spring which is installed on outside of said guiding tube so as to diminish excessive clamping force to prevent the central conductor of coaxial cable from being twisted in clamping process.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A process for treating a crude carboxylic acid (CCA) composition comprising:
A. feeding a CCA composition comprising a liquid and a solid, said liquid comprising an organic solvent and said solids comprising dicarboxylic acid (DCA), to a filter cake formation zone to form:
(i) a CCA wet cake composition comprising said DCA solids and a portion of said organic solvent, said CCA wet cake composition having a first liquid level; and
(ii) a first mother liquor stream;
B. dewatering said CCA wet cake composition in a dewatering zone to form:
(i) a dewatered CCA wet cake composition having a second liquid level that is lower than the first liquid level or having no liquid level; and
(ii) a second mother liquor stream; and
C. washing the dewatered CCA wet cake composition with a wash stream in a wash zone to form:
(i) a washed CCA wet cake composition comprising no more than 100 ppm of the organic solvent; and
(ii) a wash liquor stream;
wherein the process does not include a predominantly evaporative drying step.
2. The process of claim 1, wherein the organic solvent comprises acetic acid.
3. The process of claim 1, wherein the CCA composition contains 300 to 6,000 parts per million cobalt based on the weight of the CCA composition fed to the filter cake formation zone.
4. The process of claim 1, wherein the CCA composition fed to the filter cake formation zone has not been subjected to a step for hydrogenation prior to feeding the CCA composition to the filter cake formation zone.
5. The process of claim 1, wherein the CCA wet cake composition contains a higher concentration of DCA solids based on the CCA wet cake composition relative to the concentration of DCA in the CCA composition fed to the filter cake formation zone; and the concentration of organic solvent in the CCA wet cake composition is lower than the concentration of organic solvent in the CCA composition fed to the filter cake formation zone.
6. The process of claim 1, wherein the first mother liquor stream comprises organic solvent in an amount of at least 95 weight percent, based on the weight of the mother liquor stream.
7. The process of claim 1, wherein the temperature of the first mother liquor stream is within a range of 50\xb0 C. to 100\xb0 C.
8. The process of claim 1, wherein the temperature and pressure within in any one of the filter cake formation zone, the dewatering zone, and the wash zone, is within a range of 70\xb0 C. to 140\xb0 C., and within a range of 2 bar gauge to 5 bar gauge, respectively.
9. The process of claim 1, wherein the thickness of the CCA wet cake, the dewatered CCA wet cake, or the washed CCA wet cake is within a range of 2 to 5 inches.
10. The process of claim 1, wherein the duration of feeding the CCA wet cake composition to the filter cake formation zone is from 5 seconds to 30 seconds, the duration of dewatering the CCA wet cake composition in the dewatering zone is from 3 seconds to 30 seconds, and the duration of washing CCA wet cake composition in the washing zone is from 5 seconds to 30 seconds.
11. The process of claim 1, wherein an agent for dewatering in the dewatering zone comprises at least 80 volume % gas.
12. The process of claim 11, wherein a pressure drum filter is used and the flow rate standard is less than 0.14 standard Lsqcmmin at a pressure of 1-5 bar.
13. The process of claim 1, wherein the liquid volume of the second mother liquor stream is less than the liquid volume of the first mother liquor stream.
14. The process of claim 1, wherein the wash stream comprises at least 50 wt. % water based on the weight of the wash stream.
15. The process of claim 1, wherein the wash stream comprises at least 90 wt. % water based on the weight of the wash stream.
16. The process of claim 1, wherein the wash ratio of mass of wash to the mass of dry solids is at least 0.35:1 and up to 2:1.
17. The process of claim 1, wherein washed CCA wet cake composition is fed to a second dewatering zone after the wash zone to form a third mother liquor composition and a low moisture washed CCA wet cake composition.
18. The process of claim 1, wherein the washed CCA wet cake composition has a concentration of cobalt less than 50 ppm, based on the weight of the washed CCA wet cake composition, wherein said process utilizes 1 wash step and at a wash ratio of less than 1:1.
19. The process of claim 18, wherein the washed CCA wet cake composition has a concentration of cobalt less than 20 ppm, based on the weight of the washed CCA wet cake composition, wherein said process utilizes 1 wash step and at a wash ratio of less than 1:1.
20. The process of claim 18, wherein the washed CCA wet cake composition has a concentration of cobalt less than 15 ppm, based on the weight of the washed CCA wet cake composition, wherein said process utilizes 1 wash step and at a wash ratio of less than 1:1.
21. The process of claim 1, wherein the one or more of the wash liquor streams are fed to directly or indirectly to a waste water treatment facility without the use of a distillation column prior to introducing the wash liquor stream to quiescent basin in the waste water treatment facility.
22. The process of claim 1, further comprising a cake discharge zone.
23. The process of claim 22, wherein the washed CCA wet cake composition is discharged from the cake discharge zone by applying water to the CCA wet cake composition to erode the wet cake from the cake discharge zone and apply water to the filter media supporting the washed CCA wet cake composition.
24. The process of claim 23, wherein said water application is by a water spray.
25. The process of claim 24, wherein a back blow of gas is applied to the filter media during at least a portion of the water spray application.
26. The process of claim 1, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % isophthalic acid.
27. The process of claim 2, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % isophthalic acid.
28. The process of claim 3, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % isophthalic acid.
29. The process of claim 4, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % isophthalic acid.
30. The process of claim 5, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % isophthalic acid.
31. The process of claim 6, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % isophthalic acid.
32. The process of claim 7, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % isophthalic acid.
33. The process of claim 8, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % isophthalic acid.
34. The process of claim 9, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % isophthalic acid.
35. The process of claim 10, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % isophthalic acid.
36. The process of claim 11, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % isophthalic acid.
37. The process of claim 12, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % isophthalic acid.
38. The process of claim 13, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % isophthalic acid.
39. The process of claim 14, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % isophthalic acid.
40. The process of claim 15, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % isophthalic acid.
41. The process of claim 16, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % isophthalic acid.
42. The process of claim 17, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % isophthalic acid.
43. The process of claim 18, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % isophthalic acid.
44. The process of claim 19, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % isophthalic acid.
45. The process of claim 20, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % isophthalic acid.
46. The process of claim 21, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % isophthalic acid.
47. The process of claim 1, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % terephthalic acid.
48. The process of claim 2, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % terephthalic acid.
49. The process of claim 3, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % terephthalic acid.
50. The process of claim 4, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % terephthalic acid.
51. The process of claim 5, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % terephthalic acid.
52. The process of claim 6, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % terephthalic acid.
53. The process of claim 7, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % terephthalic acid.
54. The process of claim 8, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % terephthalic acid.
55. The process of claim 9, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % terephthalic acid.
56. The process of claim 10, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % terephthalic acid.
57. The process of claim 11, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % terephthalic acid.
58. The process of claim 12, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % terephthalic acid.
59. The process of claim 13, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % terephthalic acid.
60. The process of claim 14, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % terephthalic acid.
61. The process of claim 15, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % terephthalic acid.
62. The process of claim 16, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % terephthalic acid.
63. The process of claim 17, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % terephthalic acid.
64. The process of claim 18, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % terephthalic acid.
65. The process of claim 19, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % terephthalic acid.
66. The process of claim 20, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % terephthalic acid.
67. The process of claim 1, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % terephthalic acid.
68. The process of claim 21, wherein the CCA composition comprises at least 20 wt. % solids, and the solids comprise at least 80 wt % terephthilic acid.
69. A process for treating a crude carboxylic acid (CCA) composition comprising:
A. feeding a CCA composition comprising a liquid and a solid, said liquid comprising an organic solvent and said solids comprising dicarboxylic acid (DCA), to a filter cake formation zone to form:
(i) a CCA wet cake composition comprising said DCA solids and a portion of said organic solvent, said CCA wet cake composition having a first liquid level; and
(ii) a first mother liquor stream;
B. washing said CCA wet cake composition with an intermediate wash stream to form:
(i) an intermediate washed CCA wet cake composition having a second liquid level that is lower than the first liquid level or having no liquid level; and
(ii) an intermediate wash liquor stream; and
C. dewatering said intermediate washed CCA wet cake composition to form:
(i) a dewatered CCA wet cake composition having a second liquid level that is lower than the first liquid level or having no liquid level; and
(ii) a second mother liquor stream; and
D. washing the dewatered CCA wet cake composition with a second wash stream in a wash zone to form:
(i) a washed CCA wet cake composition comprising no more than 100 ppm of the organic solvent; and
(ii) a wash liquor stream.
wherein the process does not include a predominantly evaporative drying step.
70. The process of claim 69, wherein the washed CCA wet cake composition has a concentration of cobalt no more than 10 ppm, based on the weight of the washed CCA wet cake composition, utilizing two dewatering zones with wash streams at a wash ratio of no more than 1:1 in each wash zone.
71. The process of claim 69, wherein the washed CCA wet cake composition is fed to a second dewatering zone after the wash zone D to form a third mother liquor composition and a low moisture washed CCA wet cake composition.
72. The process of claim 71, wherein the low moisture CCA wet cake composition has a moisture content of 20 wt. % or less without a drying step, based on the weight of the low moisture washed CCA wet cake composition.
73. The process of claim 69, wherein the washed CCA composition has a concentration of cobalt less than 20 ppm, based on the weight of the washed CCA wet cake composition, wherein said process utilizes a wash ratio at each wash step of less than 1:1.
74. The process of claim 69, wherein the washed CCA wet cake composition has a concentration of cobalt less than 10 ppm, based on the weight of the washed CCA wet cake composition, wherein said process utilizes a wash ratio of less than 1:1 at each wash step.
75. The process of claim 69, wherein the thickness of the washed CCA wet cake is within a range of 3 to 5 inches.
76. The process of claim 69, wherein the agent for dewatering comprising at least 80 volume % gas.
77. The process of claim 76, wherein the gas comprises at least 80% nitrogen.
78. The process of claim 69, wherein the process steps A-D are conducted in a pressure drum filter.
79. The process of claim 69, wherein the washed CCA wet cake composition comprises at least 5% moisture and no more than 100 ppm of the organic solvent.
80. The process of claim 69, wherein the washed CCA wet cake composition comprises at least 30% moisture and no more than 5 ppm of the organic solvent.
81. The process of claim 69, wherein at least one of the first wash stream and the second wash stream comprises at least 50 wt. % water based on the weight of the wash stream.
82. The process of claim 69, wherein at least one of the first wash stream and the second wash stream comprises at least 90 wt. % water based on the weight of the wash stream.
83. The process of claim 69, wherein the second wash stream comprises at least 50 wt. % water based on the weight of the wash stream.
84. The process of claim 69, wherein the second wash stream comprises at least 90 wt. % water based on the weight of the wash stream.