High-concentration gas pretreatment device

Abstract

The utility model discloses a high-concentration gas pretreatment device and relates to the technical field of gas pretreatment. A dry-type flame arrester, a primary filter, a condenser, a gas-water separator, a gas pressure regulator, a precision filter and an electric control valve are sequentially arranged on the high-concentration gas safe conveying pipeline; emptying and diffusing devices are arranged between the dry type flame arrester and the primary filter, between the gas pressure regulator and the precision filter and between the precision filter and the electric control valve. The emptying and bleeding device comprises a unit bleeding pipe, a second manual shut-off valve and a nitrogen displacement sampling valve; according to the utility model, the pretreatment effect of the high-concentration gas is effectively improved, the residues of dust, liquid water and fine impurities in the high-concentration gas are reduced to a great extent, and the operation efficiency of a high-concentration gas generator set is further improved.

Description

Technical Field

[0001] This utility model relates to the field of gas pretreatment technology, specifically a high-concentration gas pretreatment device. Background Technology

[0002] High-concentration methane power generation is one of the more mature ways to comprehensively utilize methane. However, traditional high-concentration methane pretreatment technology is not only costly, but also prone to problems if the pretreatment effect is poor, resulting in high dust and liquid water content and fine impurities. When wet methane enters the high-concentration methane internal combustion generator set for combustion, it will reduce the efficiency, reliability and lifespan of the high-concentration methane internal combustion engine set, and affect the operating efficiency of the high-concentration methane generator set. Therefore, pretreatment technology has become a technical bottleneck restricting high-concentration methane power generation. Utility Model Content

[0003] This invention overcomes the shortcomings of the prior art by proposing a high-concentration gas pretreatment device to improve the pretreatment effect of high-concentration gas.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0005] A high-concentration gas pretreatment device includes a high-concentration gas safety delivery pipeline after the high-concentration gas mixture inlet pipe interface, which is connected to a high-concentration gas generator set. Along the high-concentration gas safety delivery pipeline, from the high-concentration gas mixture inlet pipe interface to the high-concentration gas generator set, a dry flame arrester, a primary filter, a condenser, a gas-water separator, a gas pressure regulator, a precision filter, and an electric regulating valve are sequentially arranged. Venting devices are installed between the dry flame arrester and the primary filter, between the gas pressure regulator and the precision filter, and between the precision filter and the electric regulating valve. The venting devices include a generator vent pipe, a second manual shut-off valve, and a nitrogen replacement sampling valve.

[0006] Furthermore, an electrically operated shut-off valve, a venting device, and a first manually operated shut-off valve are sequentially installed between the dry flame arrester and the primary filter.

[0007] Furthermore, a venting device is also installed between the first manual shut-off valve and the primary filter.

[0008] Furthermore, a first manual shut-off valve is installed between the gas-water separator and the gas pressure regulator.

[0009] Furthermore, a safety valve, a venting device, and a first manual shut-off valve are sequentially installed between the gas pressure regulator and the precision filter.

[0010] Furthermore, a flow measurement device is installed between the precision filter and the electric regulating valve.

[0011] Furthermore, a first manual shut-off valve is installed between the precision filter and the flow measurement device.

[0012] Furthermore, a venting device and an electric shut-off valve are sequentially installed between the flow measurement device and the electric regulating valve.

[0013] Furthermore, the condenser is connected to the refrigeration unit via a cold water circulation pipe, and a cold water supply shut-off valve is connected to the cold water circulation pipe; the refrigeration unit is connected to a cold water circulation pump, and a cold water pump shut-off valve is installed on the pipe connected to the cold water circulation pump; the condenser is connected to the cold water circulation pump via a refrigerant return pipe; the cold water circulation pump is connected to a cold water replenishment tank, and a replenishment tank shut-off valve is installed on the pipe connected to the cold water replenishment tank.

[0014] Furthermore, all drainage is directed to a water-sealed drain, and then transported to a recycling tank via a water-sealed drain pipe installed on the drain. The recycling tank is equipped with an electric shut-off valve.

[0015] The beneficial effects of this utility model compared to the prior art are as follows:

[0016] This invention employs a primary filter to perform initial filtration of the gas in the gas pipeline, removing most of the impurities. A cooling and dehydration module pre-cools and dehydrates the gas, reducing its humidity below saturation. A precision filter removes residual fine impurities, ensuring the gas content meets the requirements for high-enriched gas turbines. A generator set venting device, controlled by a shut-off valve, releases all gas from the generator set and its branch pipes during major overhauls and shutdowns of the gas power plant.

[0017] This invention effectively improves the pretreatment effect of high-concentration methane, greatly reduces the residue of dust, liquid water and fine impurities in high-concentration methane, and thus improves the operating efficiency of high-concentration methane generator sets. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the connection structure of the high-concentration gas pretreatment device described in this utility model;

[0019] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0021] Figure 4 for Figure 1 Enlarged view of point C in the middle;

[0022] Figure label:

[0023] 1. High-concentration methane safety transmission pipeline; 2. Dry flame arrester; 3. Electric shut-off valve; 4. Venting device; 401. Unit vent pipe; 402. Second manual shut-off valve; 5. First manual shut-off valve; 6. Primary filter; 601. First drain pipe; 602. Third manual shut-off valve; 7. Condenser; 701. First drain valve; 702. Second drain pipe; 8. Gas-liquid separator; 801. Second drain valve; 802. Third drain pipe; 9. Gas pressure regulator; 1 0. Safety valve; 11. Precision filter; 1101. Fourth drain pipe; 1102. Fourth manual shut-off valve; 12. Flow measurement device; 13. Electric regulating valve; 14. Refrigeration unit; 1401. Cold water circulation pipe; 1402. Cold water supply shut-off valve; 15. Cold water circulation pump; 1501. Cold water pump shut-off valve; 16. Cold water replenishment tank; 1601. Replenishment tank shut-off valve; 17. Water seal drainer; 18. Recycled water tank; 1801. Recycled water tank electric shut-off valve. Detailed Implementation

[0024] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, this utility model will be further described in detail with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it. The technical solution of this utility model will be described in detail below with reference to the embodiments and accompanying drawings, but the scope of protection is not limited thereto.

[0025] See Figures 1 to 4 This embodiment proposes a high-concentration gas pretreatment device, including a high-concentration gas safety transmission pipeline 1. A dry flame arrester 2, an electrically operated shut-off valve 3, a venting device 4, a first manual shut-off valve 5, a primary filter 6, a condenser 7, a gas-liquid separator 8, a first manual shut-off valve 5, a gas pressure regulator 9, a safety valve 10, a precision filter 11, a flow measurement device 12, and an electrically operated shut-off valve 3 are sequentially installed on the high-concentration gas safety transmission pipeline 1 after the high-concentration gas mixing inlet pipe interface.

[0026] The venting and venting device 4 includes a unit venting pipe 401, a second manual shut-off valve 402, and a nitrogen replacement sampling valve 403.

[0027] The primary filter 6 includes a first drain pipe 601 and a third manual shut-off valve 602;

[0028] The condenser 7 includes a first drain valve 701 and a second drain pipe 702;

[0029] The gas-liquid separator 8 includes a second drain valve 801 and a third drain pipe 802;

[0030] The precision filter 11 includes a fourth drain pipe 1101 and a fourth manual shut-off valve 1102;

[0031] The condenser 7 is connected to the refrigeration unit 14 via a cold water circulation pipe 1401, and a cold water supply shut-off valve 1402 is connected to the cold water circulation pipe 1401. The refrigeration unit 14 is connected to a cold water circulation pump 15, and a cold water pump shut-off valve 1501 is installed on the pipe connected to the cold water circulation pump 15. The condenser 7 is connected to the cold water circulation pump 15 via a refrigerant return pipe. The cold water circulation pump 15 is connected to a cold water replenishment tank 16, and a replenishment tank shut-off valve 1601 is installed on the pipe connected to the cold water replenishment tank 16.

[0032] The condenser 7, refrigeration unit 14, cold water circulation pump 15, and cold water replenishment tank 16 together form a cooling and dehydration module.

[0033] All drainage flows into the water seal drainer 17, and then through the water seal drain pipe 1701 installed in the water seal drainer 17, it is uniformly transported to the recycling water tank 18. The recycling water tank 18 is connected to an electric shut-off valve 1801 on its pipeline.

[0034] The working principle of a high-concentration methane pretreatment device proposed in this embodiment is as follows:

[0035] The dry flame arrester 2 is used to prevent the flame from spreading to the gas intake mixing pipe; the gas from the gas mixing intake pipe is cut off by controlling the electric shut-off valve 3 located after the dry flame arrester 2 when the gas generator set is shut down for maintenance.

[0036] Impurities in the gas can affect the normal operation of the cooling and dehydration module and greatly reduce its service life. Therefore, a primary filter 6 is installed before the cooling and dehydration module to filter out most of the impurities in the gas.

[0037] If gas containing moisture is directly burned in a high-concentration gas internal combustion engine, it will reduce the engine's efficiency and operational reliability, and shorten its service life. Therefore, a cooling and dehydration module is needed to pre-cool and dehydrate the gas to meet the engine's humidity requirements. The cooling and dehydration module includes a condenser 7 (to lower the gas temperature), a refrigeration unit 14 (to provide cooling water to the gas condenser), a chilled water circulation pump 15 (to power the cooling water), and a chilled water replenishment tank 16 (to replenish cooling water losses), so that the gas humidity is reduced to below the upper limit of humidity for high-concentration gas internal combustion engines (usually 50%).

[0038] The gas-water separator 8 is used to remove dust and liquid water from gas.

[0039] The pressure fluctuation of high-concentration gas coming out of the gas storage tank is large. Considering the resistance loss of equipment, pipelines and valves along the gas storage tank to the high-concentration gas mixing outlet pipe, as well as the requirement of the high-concentration gas internal combustion engine for fuel intake pressure, the pretreatment system needs to be equipped with a gas pressure regulator 9.

[0040] Safety valve 10 keeps the gas pressure below the safe level;

[0041] A precision filter 11 is installed after the primary filter 6 to filter out residual fine impurities in the gas, thereby ensuring the cleanliness requirements of the gas used by the high-concentration gas internal combustion engine unit.

[0042] The venting device 4 vents the gas in the generator set and its branch pipes during maintenance by controlling the second manual shut-off valve 402.

[0043] This invention, through the cooperation of its various components, can effectively treat high-concentration methane, greatly reducing the residue of dust, liquid water, and fine impurities in high-concentration methane, thereby improving the operating efficiency of high-concentration methane generator sets.

[0044] The above description is a further detailed explanation of the present invention in conjunction with specific preferred embodiments. It should not be considered that the specific embodiments of the present invention are limited to this. For those skilled in the art, several simple deductions or substitutions can be made without departing from the present invention, and all such deductions or substitutions should be considered to fall within the scope of patent protection determined by the submitted claims.

Claims

1. A high-concentration gas pretreatment device, comprising a high-concentration gas safety conveying pipeline (1) after a high-concentration gas mixed inlet pipe interface, the high-concentration gas safety conveying pipeline (1) being connected with a high-concentration gas generator set; characterized in that, Dry fire damper (2), primary filter (6), condenser (7), gas-water separator (8), gas pressure regulator (9), precision filter (11) and electric regulating valve (13) are sequentially arranged on the high-concentration gas safety conveying pipeline (1) from the high-concentration gas mixed gas inlet interface to the high-concentration gas generator set; emptying and diffusing device (4) is arranged between dry fire damper (2) and primary filter (6), between gas pressure regulator (9) and precision filter (11), and between precision filter (11) and electric regulating valve (13); the emptying and diffusing device (4) comprises a unit diffusing pipe (401), a second manual shut-off valve (402) and a nitrogen replacement sampling valve (403).

2. A high concentration gas pretreatment device according to claim 1, characterized in that, Electric shut-off valve (3), emptying and diffusing device (4) and first manual shut-off valve (5) are sequentially arranged between dry fire damper (2) and primary filter (6).

3. A high concentration gas pretreatment device according to claim 2, characterized in that, Emptying and diffusing device (4) is also arranged between first manual shut-off valve (5) and primary filter (6).

4. The high concentration gas pretreatment device according to claim 1, characterized by First manual shut-off valve (5) is arranged between gas-water separator (8) and gas pressure regulator (9).

5. A high concentration gas pretreatment device according to claim 4, characterized in that, Safety valve (10), emptying and diffusing device (4) and first manual shut-off valve (5) are sequentially arranged between gas pressure regulator (9) and precision filter (11).

6. A high concentration gas pretreatment device according to claim 1, characterized in that, Flow measuring device (12) is arranged between precision filter (11) and electric regulating valve (13).

7. A high concentration gas pretreatment device according to claim 6, characterized in that First manual shut-off valve (5) is arranged between precision filter (11) and flow measuring device (12).

8. A high concentration gas pretreatment device according to claim 7, characterized in that, Emptying and diffusing device (4) and electric shut-off valve (3) are sequentially arranged between flow measuring device (12) and electric regulating valve (13).

9. The high concentration gas pretreatment device according to claim 1, characterized by The condenser (7) is connected with the refrigeration unit (14) through the cold water circulating pipe (1401), and the cold water circulating pipe (1401) is connected with the cold water supply shut-off valve (1402); the refrigeration unit (14) is connected with the cold water circulating pump (15), and the pipeline connected with the cold water circulating pump (15) is provided with the cold water pump shut-off valve (1501); the condenser (7) is connected with the cold water circulating pump (15) through the refrigeration liquid return pipe; the cold water circulating pump (15) is connected with the cold water supplement tank (16), and the pipeline connected with the cold water supplement tank (16) is provided with the supplement tank shut-off valve (1601).

10. The high concentration gas pretreatment device according to claim 1, characterized by All the drainages are discharged to the water seal drainage device (17), and then uniformly transported to the recovery water tank (18) through the water seal drainage pipe (1701) of the water seal drainage device (17); the pipeline of the recovery water tank (18) is connected with the recovery water tank electric shut-off valve (1801).

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