CN217068113U

CN217068113U - Raw gas filtering device in natural gas liquefaction process

Info

Publication number: CN217068113U
Application number: CN202220355432.4U
Authority: CN
Inventors: 高志涛; 王小军; 石军杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-02-22
Filing date: 2022-02-22
Publication date: 2022-07-29
Anticipated expiration: 2032-02-22

Abstract

The utility model belongs to the technical field of natural gas filtration, especially be a raw gas filter equipment in natural gas liquefaction technology, including the raw gas pipe, the inside of raw gas pipe is equipped with primary filter screen, primary filter screen right side is equipped with secondary filter screen, secondary filter screen right side is equipped with activated carbon adsorption filter screen, one side that the raw gas pipe is close to activated carbon adsorption filter screen is equipped with and is used for the clearance air-blower that clears up primary filter screen, secondary filter screen and activated carbon adsorption filter screen; the primary filter screen carries out primary filtration to the former gas of natural gas, promotes former gas purity, the purity of the further promotion natural gas of secondary filter screen, the active carbon adsorption filter screen adsorbs the filtration to the former gas of natural gas after the secondary filter screen filters, saves the time of follow-up purification, the impurity of adhesion is cleared up on the clearance air-blower to the filter screen, promotes filter screen life, avoids leading to filter screen hole to block up because of the impurity of adhesion is more on the filter screen.

Description

Raw gas filtering device in natural gas liquefaction process

Technical Field

The utility model belongs to the technical field of natural gas filters, concretely relates to raw gas filter equipment in natural gas liquefaction technology.

Background

The natural gas refers to all gases naturally existing in nature, including gases formed in various natural processes in an atmospheric space, a water space and a rock space, and in the process of extracting the natural gas, the natural gas needs to be filtered and purified after extraction because the natural gas contains more impurities.

SUMMERY OF THE UTILITY MODEL

After the natural gas is extracted, the natural gas needs to be purified more complexly, the purification time is longer, when the natural gas filter is used for filtering the raw gas in the extraction process, the filtering efficiency is single, and the filter core of placing in the filter need demolish the filter after the filter and take off the filter core and clean, and the cleaning process is comparatively loaded down with trivial details and consume time, the utility model provides a raw gas filter equipment in the natural gas liquefaction technology has through a filter screen, secondary filter and active carbon adsorption filter screen carry out the purity that multistage filtration promoted raw gas to the natural gas extraction in-process and save the time of follow-up purification and clear up the promotion filter screen through the clearance air-blower and filter life to the filter screen, avoids leading to filter mesh to block up because of the impurity of adhesion is more on the filter screen, influences the characteristics of the filtration efficiency of natural gas raw gas.

The utility model provides a following technical scheme: including the former gas conduit that is used for guiding the natural gas raw gas, the inside filter screen that is used for carrying out a filtration to raw gas that is equipped with of raw gas conduit, the filter screen right side is equipped with and is used for carrying out secondary filter's secondary filter to raw gas, the secondary filter screen right side is equipped with and is used for carrying out the activated carbon adsorption filter screen of cubic filtration to raw gas, raw gas conduit is close to one side of activated carbon adsorption filter screen is equipped with and is used for right the filter screen secondary filter screen reaches the clearance air-blower that the activated carbon adsorption filter screen cleared up.

The device comprises a raw gas guide pipe, a cleaning air blower, a raw gas guide pipe and a cleaning air blower, wherein the raw gas guide pipe is provided with a gas inlet end plugging valve at the gas inlet end, the raw gas guide pipe is provided with a gas outlet end plugging valve at the gas outlet end, and one side of the raw gas guide pipe, which is close to the cleaning air blower, is provided with an air blower plugging valve.

The device comprises a primary air guide pipe, a primary filter screen, a primary air guide pipe and a secondary air guide pipe, wherein an impurity bearing box used for bearing impurities of the primary filter screen is arranged in the primary air guide pipe, a bearing box taking-out groove used for taking out the impurity bearing box is formed in the side wall of the primary air guide pipe, and a taking-out groove sealing plate used for sealing the bearing box taking-out groove is rotatably connected to the side wall of the primary air guide pipe.

The taking-out groove sealing plate is rotatably connected with the side wall of the taking-out groove of the bearing box through a rotating shaft, the taking-out groove sealing plate is screwed with a fastening bolt for fixing the taking-out groove sealing plate, and a threaded hole for matching the fastening bolt for fixing the taking-out groove sealing plate is formed in the taking-out groove of the bearing box.

Wherein, a filter screen with be equipped with between the secondary filter screen and be used for bearing a impurity storage tank of secondary filter screen impurity, an impurity storage tank and former gas pipe fixed connection, it is right that impurity storage tank top both sides are rotated to be connected with two and are used for once impurity storage tank carries out a groove shutoff board that blocks up, and a groove solenoid valve blowoff hole that impurity storage tank bottom fixedly connected with was used for discharging impurity.

Wherein, secondary filter net with be equipped with between the active carbon adsorption filter net and be used for bearing the secondary impurity storage tank of active carbon adsorption filter net impurity, secondary impurity storage tank and former gas pipe fixed connection, secondary impurity storage tank top both sides are rotated and are connected with two and are used for right the secondary groove shutoff board that secondary impurity storage tank carries out the shutoff, secondary impurity storage tank bottom fixedly connected with is used for the secondary groove solenoid valve blowoff hole of discharge impurity.

The utility model has the advantages that: the primary filter screen carries out primary filtration to the natural gas raw gas, carry out coarse filtration with the impurity that contains in the natural gas, promote raw gas purity, secondary filter screen carries out the secondary filter purification to the natural gas raw gas after primary filter screen filters, further promotion natural gas's purity, the active carbon adsorption filter screen carries out adsorption filtration to the natural gas raw gas after secondary filter screen filters, adsorb the impurity that contains in the raw gas and filter, promote the purity of natural gas, save the time of follow-up purification, the clearance air-blower is to the active carbon adsorption filter screen, secondary filter screen and primary filter screen clear up, the impurity of adhesion clears up on the filter screen, promote filter screen life, avoid leading to the filter mesh to block up because of the impurity of the adhesion on the filter screen more, influence the filtration efficiency of natural gas raw gas.

The parts of the device not involved are the same as or can be implemented using prior art.

Drawings

Fig. 1 is a schematic view of a dynamic cross-section structure of the middle intake end plugging valve after opening;

fig. 2 is a schematic sectional view of the blocking valve at the air inlet end of the present invention after being closed;

fig. 3 is a schematic view of the dynamic cross-sectional structure of the air inlet end plugging valve and the air outlet end plugging valve of the present invention after the air blower plugging valve is opened;

FIG. 4 is an enlarged schematic view of portion A of FIG. 3;

in the figure: 1. a raw gas conduit; 2. a primary filter screen; 3. a secondary filter screen; 4. an activated carbon adsorption filter screen; 5. cleaning the blower; 11. a gas inlet end plugging valve; 12. a gas exhaust end plugging valve; 13. blower plugging valves; 14. a carrying box taking-out groove; 15. a threaded hole; 21. taking out the groove sealing plate; 22. an impurity carrying box; 211. a rotating shaft; 212. fastening a bolt; 31. a primary impurity storage tank; 32. a primary groove plugging plate; 33. a primary tank electromagnetic valve sewage draining hole; 41. a secondary impurity storage tank; 42. a secondary slot plugging plate; 43. and a secondary groove electromagnetic valve blow-off hole.

Detailed Description

Referring to fig. 1-4, the present invention provides the following technical solutions: including the former gas pipe 1 that is used for guiding the natural gas raw gas, 1 inside being equipped with of former gas pipe is used for carrying out a filterable primary filter screen 2 to the raw gas, 2 right sides of primary filter screen are equipped with and are used for carrying out secondary filter's secondary filter screen 3 to the raw gas, 3 right sides of secondary filter screen are equipped with and are used for carrying out cubic filterable active carbon adsorption filter screen 4 to the raw gas, one side that former gas pipe 1 is close to active carbon adsorption filter screen 4 is equipped with and is used for carrying out the clearance air-blower 5 of clearance to primary filter screen 2, secondary filter screen 3 and active carbon adsorption filter screen 4.

In this embodiment: the raw gas guide pipe 1 is used for guiding raw natural gas and guiding the raw natural gas, the primary filter screen 2 is used for filtering the raw natural gas for the first time, impurities contained in the natural gas are roughly filtered, the purity of the raw natural gas is improved, the secondary filter screen 3 is used for filtering and purifying the raw natural gas filtered by the primary filter screen 2 for the second time, the purity of the natural gas is further improved, smaller impurities contained in the raw natural gas are filtered and blocked, the activated carbon adsorption filter screen 4 is used for adsorbing and filtering the raw natural gas filtered by the secondary filter screen 3, impurities contained in the raw natural gas are adsorbed and filtered, the purity of the natural gas is improved, the time for subsequent purification is saved, the cleaning blower 5 is used for cleaning the activated carbon adsorption filter screen 4, the secondary filter screen 3 and the primary filter screen 2 and cleaning impurities adhered to the filter screens, after natural gas raw gas filters and accomplishes, start clearance air-blower 5 after closing raw gas pipe 1 inlet end and the end valve of giving vent to anger and blow to blowing in raw gas pipe 1, carry out the blast air with accumulational impurity and dust on active carbon adsorption filter screen 4, secondary filter screen 3 and the primary filter screen 2 and get rid of, promote filter screen life, avoid leading to the filter mesh to block up because of the impurity of adhesion is more on the filter screen, influence the filtration efficiency of natural gas raw gas.

The gas inlet end of the raw gas guide pipe 1 is provided with a gas inlet end plugging valve 11, the gas outlet end of the raw gas guide pipe 1 is provided with a gas outlet end plugging valve 12, and one side of the raw gas guide pipe 1 close to the cleaning blower 5 is provided with a blower plugging valve 13; air inlet end shutoff valve 11 is used for opening and shutting control to 1 inlet end department of former gas pipe, open air inlet end shutoff valve 11 when needs carry out the former gas and draw, carry out the water conservancy diversion to the former gas of natural gas, exhaust end shutoff valve 12 is used for opening and shutting control to 1 exhaust end department of former gas pipe, the former gas of natural gas after will filtering purification discharges to the outside, air-blower shutoff valve 13 is used for carrying out the shutoff to the one side that is close to clearance air-blower 5, air-blower shutoff valve 13 keeps closing all the time when filtering and drawing the former gas usually, after air inlet end shutoff valve 11 and exhaust end shutoff valve 12 close, open air-blower shutoff valve 13, then start clearance air-blower 5 and adsorb active carbon filter screen 4, secondary filter screen 3 and primary filter screen 2 clear up.

An impurity bearing box 22 for bearing impurities of the primary filter screen 2 is arranged in the raw gas guide pipe 1, a bearing box taking-out groove 14 for taking out the impurity bearing box 22 is formed in the side wall of the raw gas guide pipe 1, and a taking-out groove sealing plate 21 for plugging the bearing box taking-out groove 14 is rotatably connected to the side wall of the raw gas guide pipe 1; impurity bears box 22 and is used for bearing the impurity that primary filter screen 2 was blown off when clearance air-blower 5 carried out the blast air clearance, avoids impurity to drop to former gas conduit 1's inlet end department, bears box and takes out groove 14 and is used for bearing box 22 with impurity and takes out and put into from former gas conduit 1, takes out groove closing plate 21 and is used for taking out groove 14 to bearing box and carrying out the shutoff.

The taking-out groove sealing plate 21 is rotatably connected with the side wall of the bearing box taking-out groove 14 through a rotating shaft 211, a fastening bolt 212 for fixing the taking-out groove sealing plate 21 is screwed on the taking-out groove sealing plate 21, and a threaded hole 15 for fixing the taking-out groove sealing plate 21 by matching with the fastening bolt 212 is formed in the bearing box taking-out groove 14; the rotation shaft 211 is used for rotatably connecting the extraction groove sealing plate 21 and the inner wall of the carrier box extraction groove 14, and the fastening bolt 212 fastens the extraction groove sealing plate 21 in cooperation with the threaded hole 15 to ensure the sealing performance of the raw gas guide tube 1.

A primary impurity storage tank 31 for bearing impurities of the secondary filter screen 3 is arranged between the primary filter screen 2 and the secondary filter screen 3, the primary impurity storage tank 31 is fixedly connected with the raw gas conduit 1, two sides of the top of the primary impurity storage tank 31 are rotatably connected with two primary tank plugging plates 32 for plugging the primary impurity storage tank 31, and the bottom of the primary impurity storage tank 31 is fixedly connected with a primary tank electromagnetic valve sewage discharge hole 33 for discharging impurities; primary impurity storage tank 31 is used for bearing clearance air-blower 5 when blowing to secondary filter net 3, the impurity that is blown off on the secondary filter net 3, and discharge impurity through primary groove solenoid valve blowoff hole 33, primary groove shutoff board 32 is used for carrying out the shutoff to primary impurity storage tank 31, keep the planarization of former gas conduit 1 inside, it causes the air current confusion to receive the sunken influence of primary impurity storage tank 31 when avoiding former gas to pass through between primary filter net 2 and the secondary filter net 3, primary groove shutoff board 32 keeps sealing when air-blower shutoff valve 13 seals, primary groove shutoff board 32 receives automatically controlled end control to open when air-blower shutoff valve 13 opens, primary groove solenoid valve blowoff hole 33 is used for discharging the impurity in the primary impurity storage tank 31 to the outside.

A secondary impurity storage groove 41 for bearing impurities of the activated carbon adsorption filter screen 4 is arranged between the secondary filter screen 3 and the activated carbon adsorption filter screen 4, the secondary impurity storage groove 41 is fixedly connected with the raw gas guide pipe 1, two sides of the top of the secondary impurity storage groove 41 are rotatably connected with two secondary groove plugging plates 42 for plugging the secondary impurity storage groove 41, and the bottom of the secondary impurity storage groove 41 is fixedly connected with a secondary groove electromagnetic valve blow-off hole 43 for discharging impurities; secondary impurity storage tank 41 is used for bearing the impurity that is blown off on the active carbon adsorption filter screen 4 when clearance air-blower 5 blows to active carbon adsorption filter screen 4, and discharge impurity through secondary groove solenoid valve blowoff hole 43, secondary groove shutoff board 42 is used for carrying out the shutoff to secondary impurity storage tank 41, keep the inside smoothness of former gas conduit 1, it causes the air current confusion to receive the sunken influence of secondary impurity storage tank 41 when avoiding former gas to pass through between secondary filter screen 3 and the active carbon adsorption filter screen 4, secondary groove shutoff board 42 keeps sealing when air-blower shutoff valve 13 seals, secondary groove shutoff board 42 receives automatically controlled end control to open when air-blower shutoff valve 13 opens, secondary groove solenoid valve blowoff hole 43 is used for discharging the impurity in the secondary impurity storage tank 41 to the outside.

The utility model discloses a theory of operation and use flow: when the natural gas purification device is used, a person opens the air inlet end plugging valve 11 and the exhaust end plugging valve 12, the blower plugging valve 13 is kept closed, natural gas raw gas is pumped into the raw gas guide pipe 1 through external extraction, when the natural gas raw gas in the raw gas guide pipe 1 passes through the primary filter screen 2, the primary filter screen 2 performs coarse filtration on the natural gas raw gas to improve the purity of the raw gas, the natural gas raw gas passes through the secondary filter screen 3 and the secondary filter screen 3 to perform secondary filtration and purification on the natural gas raw gas filtered by the primary filter screen 2, the purity of the natural gas is further improved, smaller impurities contained in the raw gas are filtered and blocked, the natural gas raw gas filtered by the secondary filter screen 3 performs further adsorption and filtration through the activated carbon adsorption filter screen 4 to adsorb the impurities contained in the raw gas, the purity of the natural gas is improved, and the filtered natural gas is guided to the outside through the exhaust end plugging valve 12 to be further purified, after the raw gas extraction is completed, closing the gas inlet end plugging valve 11 and the gas outlet end plugging valve 12, then opening the take-out groove sealing plate 21, placing the impurity bearing box 22 in the raw gas guide pipe 1, closing the take-out groove sealing plate 21 after the placement is completed, opening the blower plugging valve 13, synchronously opening the primary groove plugging plate 32 and the secondary groove plugging plate 42 through electric control when the blower plugging valve 13 is opened, starting the cleaning blower 5 to clean the activated carbon adsorption filter screen 4, the secondary filter screen 3 and the primary filter screen 2, discharging the impurities blown off by the activated carbon adsorption filter screen 4 into the secondary impurity storage groove 41 through the secondary groove solenoid valve blowdown hole 43, discharging the impurities blown off by the secondary filter screen 3 into the primary impurity storage groove 31 and then discharging the impurities through the primary groove solenoid valve blowdown hole 33, discharging the impurities blown off by the primary filter screen 2 into the impurity bearing box 22, after the cleaning is finished, the cleaning air blower 5 is closed, then the blower blocking valve 13 is closed, the taking-out groove sealing plate 21 is opened at the moment, the impurity bearing box 22 is taken out from the raw gas guide pipe 1, and impurities in the impurity bearing box 22 are cleaned.

Claims

1. A raw gas filter device in a natural gas liquefaction process is characterized in that: including raw gas pipe (1) that is used for guiding natural gas raw gas, raw gas pipe (1) inside is equipped with and is used for carrying out filterable primary filter screen (2) to raw gas, primary filter screen (2) right side is equipped with and is used for carrying out secondary filter's secondary filter screen (3) to raw gas, secondary filter screen (3) right side is equipped with and is used for carrying out cubic filterable active carbon adsorption filter screen (4) to raw gas, raw gas pipe (1) is close to one side of active carbon adsorption filter screen (4) is equipped with and is used for right primary filter screen (2) secondary filter screen (3) reach the clearance air-blower (5) that active carbon adsorption filter screen (4) cleared up.

2. The raw gas filtering device in a natural gas liquefaction process according to claim 1, wherein: the air inlet end of the raw gas guide pipe (1) is provided with an air inlet end plugging valve (11), the air outlet end of the raw gas guide pipe (1) is provided with an air outlet end plugging valve (12), and one side of the raw gas guide pipe (1) close to the cleaning air blower (5) is provided with an air blower plugging valve (13).

3. The raw gas filtering device in a natural gas liquefaction process according to claim 1, wherein: the impurity that is equipped with in former gas pipe (1) and is used for bearing once filter screen (2) impurity bears box (22), former gas pipe (1) lateral wall is seted up be used for with the box that bears that impurity bears box (22) takes out groove (14), former gas pipe (1) lateral wall rotates to be connected with and is used for right it takes out groove (21) to bear box and take out groove (14) and carry out the shutoff.

4. The raw gas filtering device in a natural gas liquefaction process according to claim 3, wherein: the taking-out groove sealing plate (21) is rotatably connected with the side wall of the taking-out groove (14) of the bearing box through a rotating shaft (211), the taking-out groove sealing plate (21) is connected with a fastening bolt (212) which is used for fixing the taking-out groove sealing plate (21) in a threaded mode, and a threaded hole (15) which is used for being matched with the fastening bolt (212) and used for fixing the taking-out groove sealing plate (21) is formed in the taking-out groove (14) of the bearing box.

5. The raw gas filtering device in a natural gas liquefaction process according to claim 1, wherein: one time filter screen (2) with be equipped with between secondary filter screen (3) and be used for bearing one time impurity storage tank (31) of secondary filter screen (3) impurity, one time impurity storage tank (31) and former gas conduit (1) fixed connection, it is right that one time impurity storage tank (31) top both sides are rotated and are connected with two and are used for once impurity storage tank (31) carry out a groove shutoff board (32) of shutoff, a groove solenoid valve blowoff hole (33) that impurity storage tank (31) bottom fixedly connected with is used for discharging impurity.

6. The raw gas filtering device in a natural gas liquefaction process according to claim 1, wherein: secondary filter screen (3) with be equipped with between activated carbon adsorption filter screen (4) and be used for bearing secondary impurity storage tank (41) of activated carbon adsorption filter screen (4) impurity, secondary impurity storage tank (41) and former gas conduit (1) fixed connection, secondary impurity storage tank (41) top both sides are rotated and are connected with two and are used for right secondary groove shutoff board (42) that secondary impurity storage tank (41) carry out the shutoff, secondary groove solenoid valve blowoff hole (43) that secondary impurity storage tank (41) bottom fixedly connected with is used for discharging impurity.