Device and method for determining solubility of elemental sulfur in sulfur-containing gas

Patent metadata

Field	Value
Publication number	US-11255832-B2
Application number	US-201816348603-A
Country	US
Kind code	B2
Filing date	May 25, 2018
Priority date	Jul 6, 2017
Publication date	Feb 22, 2022
Grant date	Feb 22, 2022

Abstract

Disclosed are a device and a method for determining the solubility of elemental sulfur in a sulfur-containing gas. The device includes a displacement pump, a first sampler, a high-temperature box, a back-pressure pump, a control valve, an adsorption tank, a low-temperature box, a flow meter and a collection tank. An outlet of the displacement pump is in communication with an inlet of the first sampler; an outlet of the first sampler is in communication with a first inlet of the control valve; a second inlet of the control valve is in communication with an outlet of the back-pressure pump; an outlet of the control valve is in communication with a first opening of the adsorption tank; a second opening of the adsorption tank is in communication with the flow meter; and a third opening of the adsorption tank is in communication with the collection tank.

First claim

The invention claimed is:

1. A device for determining the solubility of elemental sulfur in a sulfur-containing gas, wherein the device comprises a displacement pump, a first sampler, a high-temperature box, a back-pressure pump, a control valve, an adsorption tank, a low-temperature box, a flow meter and a collection tank, wherein an outlet of the displacement pump is in communication with an inlet of the first sampler, an outlet of the first sampler is in communication with a first inlet of the control valve, a second inlet of the control valve is in communication with an outlet of the back-pressure pump, an outlet of the control valve is in communication with a first opening of the adsorption tank, and a second opening of the adsorption tank is in communication with the flow meter; a third opening of the adsorption tank is in communication with the collection tank;
the first sampler is located in the high-temperature box, the adsorption tank is located in the low-temperature box, a valve is arranged between the outlet of the first sampler and the first inlet of the control valve, and a valve is arranged between the third opening of the adsorption tank and the collection tank, and the collection tank is adapted for being heated.

2. The device according to claim 1 , further comprising a sample dispenser, an outlet of the first sampler is in communication with an inlet of the sample dispenser, an outlet of the sample dispenser is in communication with the first inlet of the control valve, and the sample dispenser is located in the high-temperature box.

3. The device according to claim 2 , wherein a filter is arranged between the outlet of the sample dispenser and the first inlet of the control valve.

4. The device according to claim 1 , further comprising a second sampler, an inlet of the second sampler is in communication with the displacement pump, an outlet of the second sampler is in communication with the first inlet of the control valve.

5. The device according to claim 4 , wherein a filter is arranged between the second sampler and the first inlet of the control valve.

6. The device according to claim 1 , wherein a first coil is arranged between the outlet of the control valve and the first opening of the adsorption tank, and the first coil is located in the low-temperature box.

7. The device according to claim 1 , wherein a second coil is arranged between the second opening of the adsorption tank and the flow meter.

8. The device according to claim 7 , wherein the flow meter comprises at least two flow meters, and the at least two flow meters are connected in parallel to the downstream of the second coil, and a pneumatic valve is connected between each flow meter and the second coil.

9. The device according to claim 1 , wherein an outlet of the flow meter is in communication with an exhaust gas treatment tank.

10. The device according to claim 1 , further comprising a liquefaction tank, located in the low-temperature box, the collection tank is in communication with an inlet of the liquefaction tank, a check valve is arranged on a pipeline between the collection tank and the liquefaction tank to allow flow from the collection tank to the liquefaction tank.

11. The device according to claim 10 further comprising a recovery tank and a liquid injection pump, wherein the recovery tank and the liquid injection pump are each in communication with an outlet of the liquefaction tank.

12. The device according to claim 11 , wherein the liquid injection pump is in communication with the third opening of the adsorption tank.

13. The device according to claim 11 , further comprising a sample dispenser, an outlet of the first sampler is in communication with an inlet of the sample dispenser, an outlet of the sample dispenser is in communication with the first inlet of the control valve, and the sample dispenser is located in the high-temperature box, and wherein the liquid injection pump is connected between the sample dispenser and the first inlet of the control valve.

14. A method for determining the solubility of elemental sulfur in a sulfur-containing gas, the method comprising:
(1) collecting the sulfur-containing gas in a sulfur-containing gas reservoir, and determining a sampling temperature and a sampling pressure when the sulfur-containing gas is collected;
(2) balancing the sulfur-containing gas in step (1) to the room pressure, and then adsorbing the sulfur-containing gas with a carbon disulfide liquid;
(3) determining the volume of the sulfur-containing gas obtained after adsorption in the step (2) at the room temperature and the room pressure;
(4) heating the carbon disulfide liquid obtained after adsorbing elemental sulfur in the step (3) to remove carbon disulfide, and weighing the obtained elemental sulfur; and
(5) calculating the solubility of elemental sulfur in the sulfur-containing gas based on the sampling temperature, the sampling pressure, the room temperature, the room pressure, the mass of the elemental sulfur, and the volume of the sulfur-containing gas obtained after adsorption in the step (2) at the room temperature and the room pressure.

15. The method according to claim 14 , wherein the step (5) of calculating the solubility of elemental sulfur in the sulfur-containing gas based on the sampling temperature, the sampling pressure, the room temperature, the room pressure, the mass of the elemental sulfur, and the volume of the sulfur-containing gas obtained after adsorption in the step (2) at the room temperature and the room pressure comprises:
calculating the volume of the sulfur-containing gas at the standard state based on the room temperature, the room pressure, and the volume of the sulfur-containing gas obtained after adsorption in the step (2) at the room temperature and the room pressure;
calculating the volume of the sulfur-containing gas at the sampling temperature and the sampling pressure based on the volume of the sulfur-containing gas at the standard state, the sampling temperature, and the sampling pressure;
calculating the solubility of the elemental sulfur in the sulfur-containing gas based on the volume of the sulfur-containing gas at the sampling temperature and the sampling pressure and the mass of the elemental sulfur.

16. The method according to claim 15 , wherein the calculation of the volume of the sulfur-containing gas at the standard state based on the room temperature, the room pressure, and the volume of the sulfur-containing gas obtained after adsorption in the step (2) at the room temperature and the room pressure comprises calculating the volume of the sulfur-containing gas at the standard state by using the following equation (1);

V
0

=

P
1

×

V
1

×

(

273.15
+

T
0

Assignees

• Petrochina Co Ltd
• Sichuan Kelite Oil And Gas Tech Co Ltd

Inventors

• Wang Li
• Ding Zhao
• Xiao Fusen
• Zhang Dihong
• Tang daqing
• Chen Jingyuan
• Wan Ying
• Yang Xuefeng
• Kong Bo
• Liu Tong
• Xie Banghua
• Zhou Hua
• Pu Zhijin

Classifications

• G01N7/04

  by absorption or adsorption alone · CPC title

• G01N33/0036 Primary

  specially adapted to detect a particular component (physical analysis of gaseous biological material G01N33/497) · CPC title