1. A method for separating an aromatic compound isomer substituted with alkyl group(s) andor halogen atom(s) comprising subjecting a starting mixture containing the aromatic compound isomer to adsorptive separation by the use of a zeolite-containing adsorbent and a desorbent, subjecting the desorbent, after it has been collected from the adsorptive separation, to a method selected from the group consisting of distillation, purging, and adsorption to a solid adsorbent to achieve a level of impurities below 1,000 ppm by weight, the impurities being selected from the group consisting of water, hydrochloric acid, phenols, dimers of aromatic compounds, unsaturated hydrocarbon-containing compounds and oxygen-containing compounds, and after having been processed to remove impurities, supplying the desorbent to the adsorptive separation step and collecting the separated aromatic compound isomer.
2. The method for producing an aromatic compound isomer as claimed in claim 1, wherein the aromatic compound has a benzene ring or heterocyclic ring structure.
3. The method for producing an aromatic compound isomer as claimed in claim 1 or 2, wherein the aromatic compound is ring-substituted with at least one halogen element.
4. The method for producing an aromatic compound isomer as claimed in claim 1, wherein the impurities in the desorbent are removed by replacing a part of the used desorbent with an impurity-free fresh desorbent.
5. The method for producing an aromatic compound isomer as claimed in claim 1, wherein all or part of the desorbent to be supplied to the adsorptive separation step is first continuously or intermittently supplied to a step of removing impurities from it, and then supplied to the adsorptive separation step.
6. A method for separating an aromatic compound isomer substituted with alkyl group(s) andor halogen atom(s) comprising subjecting a starting mixture containing the aromatic compound isomer to adsorptive separation by the use of a zeolite-containing adsorbent and a desorbent, subjecting the desorbent, after it has been collected from the adsorptive separation, to a method selected from the group consisting of distillation, purging, and adsorption to a solid adsorbent to achieve a level of impurities below 1,000 ppm by weight, the impurities being oxygen-containing or high boiling point compounds, and after having been processed to remove impurities, supplying the desorbent to the adsorptive separation step and collecting the separated aromatic compound isomer.
7. A method for separating an aromatic compound isomer substituted with alkyl group(s) andor halogen atom(s) comprising subjecting a starting mixture containing the aromatic compound isomer to adsorptive separation by the use of a zeolite-containing adsorbent and a desorbent, subjecting the desorbent, after it has been collected from the adsorptive separation, to a method selected from the group consisting of distillation, purging, and adsorption to a solid adsorbent to achieve a level of impurities below 1,000 ppm by weight, the impurities having an aldehyde group or a carboxyl group, and after having been processed to remove impurities, supplying the desorbent to the adsorptive separation step and collecting the separated aromatic compound isomer.
8. A method for separating an aromatic compound isomer substituted with alkyl group(s) andor halogen atom(s) comprising subjecting a starting mixture containing the aromatic compound isomer to adsorptive separation by the use of a zeolite-containing adsorbent and a desorbent, subjecting the desorbent, after it has been collected from the adsorptive separation, to a method selected from the group consisting of distillation, purging, and adsorption to a solid adsorbent to achieve a level of impurities below 1,000 ppm by weight, the impurities having been produced during adsorptive separation, and after having been processed to remove impurities, supplying the desorbent to the adsorptive separation step and collecting the separated aromatic compound isomer.
9. A method for separating an aromatic compound isomer substituted with alkyl group(s) andor halogen atom(s) comprising subjecting a starting mixture containing the aromatic compound isomer to adsorptive separation by the use of a zeolite-containing adsorbent and a desorbent, subjecting the desorbent, after it has been collected from the adsorptive separation, to a method selected from the group consisting of distillation, purging, and adsorption to a solid adsorbent to achieve a level of impurities below 1,000 ppm by weight, the impurities having been produced during adsorptive separation and being selected from the group consisting of oxygen-containing or high boiling point compounds and compounds having an adehyde group or a carboxyl group, and after having been processed to remove impurities, supplying the desorbent to the adsorptive separation step and collecting the separated aromatic compound isomer.
10. A method of producing a composition comprising an aromatic isomer substituted with alkyl group(s) andor halogen atom(s), the method comprising:
(a) subjecting a starting mixture containing aromatic isomer to adsorptive separation by the use of a zeolite-containing adsorbent and a desorbent, the adsorptive separation producing impurities;
(b) withdrawing a fluid from the adsorptive separation, the fluid comprising desorbent and at least a portion of said aromatic isomer;
(c) separating the desorbent from said aromatic isomer;
(d) collecting said aromatic isomer to form the composition;
(e) removing impurities from the desorbent to achieve an impurity level below 1,000 ppm by weight; and
(f) after removing impurities, supplying the desorbent to the adsorptive separation step.
11. The method of claim 10 wherein the fluid is extract.
12. The method of claim 11 further comprising the steps of
withdrawing a raffinate from the adsorptive separation, the raffinate comprising a second portion of desorbent, a second portion of said aromatic isomer and at least one other isomer;
separating the second portion of the desorbent from the second portion of said aromatic isomer and other isomer;
removing impurities from the second portion of the desorbent to achieve an impurity level below 1,000 ppm by weight;
after removing impurities, supplying the second portion of the desorbent to the adsorptive separation step.
13. The method of claim 10 wherein the fluid is raffinate.
14. The method of claim 13 further comprising the steps of
withdrawing an extract from the adsorptive separation, the extract comprising a second portion of desorbent, a second portion of said aromatic isomer and at least one other isomer;
separating the second portion of the desorbent from the second portion of said aromatic isomer and other isomer;
removing impurities from the second portion of the desorbent to achieve an impurity level below 1,000 ppm by weight;
after removing impurities, supplying the second portion of the desorbent to the adsorptive separation step.
15. The method of claim 10 wherein the step of removing impurities comprises a method selected from the group consisting of distillation, purging, and adsorption to a solid adsorbent.
16. The method of claim 10 wherein the impurities produced during the adsorptive separation are oxygen-containing compounds, high boiling point compounds, compounds having an adehyde group or compounds having a carboxyl group.
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 favor detection and repayment system, comprising:
a non-transitory memory storing an ownership association between a first user and a first user item;
one or more hardware processors coupled to the memory and configured to read instructions from the memory to perform the steps of:
detecting that a second user has made a purchase that is associated with the first user item;
determining that the purchase by the second user that is associated with the first user item is a favor for the first user by the second user;
retrieving favor repayment information;
providing a favor detection message for display to the first user; and
providing at least one favor repayment option for display to the first user using the favor repayment information.
2. The system of claim 1, wherein the one or more hardware processors are configured to read instructions from the memory to perform the steps of:
determining that the first user is the owner of the first user item and, in response, creating the ownership association between the first user and the first user item and storing the ownership association in the non-transitory memory.
3. The system of claim 2, wherein the determining that the first user is the owner of the first user item includes receiving an ownership designation for the first user item from a first user device that is associated with the first user.
4. The system of claim 1, wherein the detecting that the second user has made a purchase that is associated with the first user item includes receiving purchase information that is associated with the purchase and that identifies the second user and the first user item.
5. The system of claim 1, wherein the determining that the purchase by the second user is the favor for the first user includes retrieving a first user calendar associated with the first user, and determining a first user activity level for the first user when the purchase was made using the first user calendar.
6. The system of claim 1, wherein the favor repayment information includes a list of items that have been selected by the second user.
7. A method for favor detection and repayment, comprising:
storing, by a system provider device in a database, an ownership association between a first user and a first user item;
detecting, by the system provider device through a purchase communication that is received over a network, that a second user has made a first purchase that is associated with the first user item;
determining, by the system provider device, that the first purchase by the second user that is associated with the first user item is a favor for the first user by the second user;
retrieving, by the system provider device from the database, favor repayment information;
providing, by the system provider device, a favor detection message for display on a first user device that is associated with the first user; and
determining, by the system provider device, at least one favor repayment option using the favor repayment information and providing the at least one favor repayment option for display on the first user device that is associated with the first user.
8. The method of claim 7, further comprising:
determining, by the system provider device, the ownership association between the first user and the first user item using purchase information for the first user item in a first user payment account that is associated with the first user.
9. The method of claim 8, further comprising:
confirming, by the system provider device, the ownership association between the first user and the first user item based on at least one second purchase that was made by the first user and that is associated with the first user item.
10. The method of claim 7, wherein the detecting that the second user has made the first purchase that is associated with the first user item includes determining that a second user device that is associated with the second user was co-located with the first user item when the first purchase was made.
11. The method of claim 7, wherein the determining that the first purchase by the second user is the favor for the first user includes retrieving first user payment account information associated with the first user, and determining that the first user payment account information indicates that the first user payment account of the first user has a balance that is lower than a predetermined amount.
12. The method of claim 7, wherein the favor repayment information includes at least one favor repayment setting that was provided by the first user.
13. The method of claim 7, further comprising:
receiving, by the system provider device from the first user device, a selection of the at least one favor repayment option and, in response, automatically making a purchase of an item that is associated with the favor repayment option using a first user payment account that is associated with the first user.
14. A non-transitory computer-readable medium comprising instructions which, in response to execution by a computer system, cause the computer system to perform a method comprising:
storing an ownership association between a first user and a first user item;
detecting that a second user has made a purchase that is associated with the first user item;
determining that the purchase by the second user that is associated with the first user item is a favor for the first user by the second user;
retrieving favor repayment information;
providing a favor detection message for display to the first user; and
providing at least one favor repayment option for display to the first user using the favor repayment information.
15. The non-transitory machine-readable medium of claim 14, wherein the method further comprises:
determining the ownership association between the first user and the first user item based on a first user device that is associated with the first user being co-located with the first user item a predetermined number of times.
16. The non-transitory machine-readable medium of claim 14, wherein the method further comprises:
determining the ownership association between the first user and the first user item based on an ownership designation received from a first user device associated with the first user.
17. The non-transitory machine-readable medium of claim 14, wherein the detecting that the second user has made the first purchase that is associated with the first user item includes receiving purchase information about the purchase from the first user item.
18. The non-transitory machine-readable medium of claim 14, wherein the detecting that the second user has made the first purchase that is associated with the first user item includes determining that a second user device that is associated with the second user was co-located with the first user item when the first purchase was made.
19. The non-transitory machine-readable medium of claim 14, wherein the determining that the purchase by the second user is the favor for the first user includes retrieving a first user calendar associated with the first user, and determining a first user activity level for the first user when the purchase was made using the first user calendar.
20. The non-transitory machine-readable medium of claim 14, wherein the favor repayment information includes a list of items that have been previously viewed by the second user on a second user device.