1. A hydrocarbon composition, comprising:
a NiFeV content of between 100 wtppm and 300 wtppm as determined by ASTM Method D5708;
at least 0.15 grams of residue per gram as determined by ASTM Method D5307;
at least 0.2 grams of hydrocarbons having a boiling range distribution between 204\xb0 C. and 343\xb0 C. at 0.101 MPa per gram as determined by ASTM Method D5307;
at least 0.3 grams of hydrocarbons of a vacuum gas oil (\u201cVGO\u201d) portion having a boiling range distribution between 343\xb0 C. and 538\xb0 C. at 0.101 MPA per gram, wherein the VGO fraction comprises at least 0.2 grams of total UV aromatics per gram of the VGO fraction; and
wherein the hydrocarbon composition has a viscosity at 37.8\xb0 C. of at most 100 cSt, wherein viscosity is as determined by ASTM Method D445.
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 waterless detection method of a boiler iron, wherein the method is applied with a normal close thermostat of the constant temperature boiler and a control device, at least a signal line is connected between the thermostat of the boiler and the control device, the control device receives the off and on state information of the thermostat and judges the presence of the water in the water tank according to that whether the off time of the thermostat exceeds the preset value or not.
2. A waterless detection method of a boiler iron according to the claim 1, wherein the control device includes a detection unit and a judgment unit, the detection unit detects the off and on state of the thermostat, the judgment unit judges the presence of the water in the water tank of the boiler according to the off and on state information of the thermostat.
3. A waterless detection method of a boiler iron according to the claim 1, wherein the off and on state information of the thermostat includes the frequency and duration of the off and on of the thermostat.
4. A waterless detection method of a boiler iron according to the claim 1, wherein the method includes steps as blow:
Step 1. the iron is situated in the waiting state without steam, then turn to the step 2;
Step 2. the control device receives the signal of the thermostat through the signal line to judge that whether the thermostat cuts off once; if not, turn to the step 1, if the thermostat cuts off once, turn to the step 3;
Step 3. the temperature of the heating pan is high enough to generate steam, then turn to the step 4;
Step 4. judge that whether the steam is required, if not, turn to step 3; if the steam is required, turn to the step 5;
Step 5. judge that whether the off time of the thermostat exceeds the preset value, if not, turn to the step 4; if the off time of the thermostat exceeds the preset value, the judgment result is that no water is in the water tank.
5. A waterless detection method of a boiler iron according to the claim 4, wherein in the step 4, judge that whether the steam is required by detecting the steam button signal.
6. A waterless detection method of a boiler iron according to the claim 4, wherein the preset value is 10 s to 120 s.
7. A waterless detection method of a boiler iron according to the claim 4, wherein the preset value is 30 s to 50 s.
8. a waterless detection device of a boiler iron, wherein the device is applied with a normal close thermostat of the constant temperature boiler and a control device, a signal line is connected between the thermostat of the boiler and the control device, the control device includes a detection unit and a judgment unit, the judgment unit judges that whether the thermostat is cut off once, if not, the judgment is that the iron is situated in the power on and waiting state, if the thermostat is cut off once, activate the detection unit;
The detection unit is disposed to detect that whether the off duration of the thermostat exceeds the preset value, if the off duration of the thermostat exceeds the preset value, the judgment is that no water is in the water tank.
9. An iron with a waterless detection device, wherein the iron is disposed with a waterless detection device, the device is applied with a normal close thermostat of the constant temperature boiler and a control device, a signal line is connected between the thermostat of the boiler and the control device, the control device at least includes a detection unit and a judgment unit, the judgment unit judges that whether the thermostat is cut off once, if not, the judgment is that the iron is situated in the power on and waiting state, if the thermostat is cut off once, activate the detection unit;
The detection unit is disposed to detect that whether the off duration of the thermostat exceeds the preset value, if the off duration of the thermostat exceeds the preset value, the judgment is that no water is in the water tank.
10. A waterless detection method of a boiler iron according to the claim 2, wherein the off and on state information of the thermostat includes the frequency and duration of the off and on of the thermostat.