CN216473107U

CN216473107U - Gas pretreatment system sled

Info

Publication number: CN216473107U
Application number: CN202123374836.2U
Authority: CN
Inventors: 韩民; 韩铁岭; 赵连宽
Original assignee: Okay Energy Technology Tianjin Co ltd
Current assignee: Okay Energy Technology Tianjin Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-05-10
Anticipated expiration: 2031-12-29

Abstract

A gas pretreatment system pry comprises a prying bottom plate, a coarse filter, a cooling dehydration heat exchanger, an explosion-proof Roots blower and a fine filter, wherein the upper surface of the prying bottom plate is sequentially provided with the coarse filter, the cooling dehydration heat exchanger, the explosion-proof Roots blower and the fine filter from left to right, the gas outlet of the coarse filter is connected with the cooling dehydration heat exchanger through a connecting pipeline, the cooling dehydration heat exchanger is connected with the explosion-proof Roots blower through a connecting pipeline and an inlet connecting hose, the explosion-proof Roots blower is connected with the fine filter through an outlet connecting hose, and a shock insulation pad is arranged between a mounting bracket and the prying bottom plate. Simple and easy to operate and has safe and reliable structure.

Description

Gas pretreatment system sled

Technical Field

The utility model relates to a gas purifies and the conveying equipment field especially relates to a gas pretreatment systems sled.

Background

The low-pressure low-concentration gas pumped out from a coal mine has very low pressure (generally only 2-4KPa) and heat value (the methane content is 25-35%), is close to the explosion limit, is generally directly discharged to the air as waste gas, causes energy waste, pollutes the atmospheric environment, pays more attention to energy conservation and emission reduction along with the country, protects the environment, meanwhile, enterprises pay more attention to energy conservation and consumption reduction, income increase and expenditure saving, and is emerging on a large scale for recycling and utilizing the low-concentration gas, so that the market is very wide.

As a new industry, the utilization process of low-pressure low-concentration gas is not mature at present, the best utilization mode is power generation grid connection, namely, the extracted gas in a coal mine is subjected to fine filtration and dust removal, after deep dehydration, ignition and deflagration are carried out to do work, a piston is pushed to move, and a crankshaft rotates to drive a generator to generate power. The tail gas discharged by the gas internal combustion generator set is led into a waste heat boiler, and the generated steam enters an air-cooled steam turbine through a steam main pipe to push the steam turbine to drive a generator to generate power. At present, no integrated low-pressure low-concentration gas pretreatment system which can remove dust and dewater to the maximum extent and can pressurize to reach the harsh gas utilization standard of a gas turbine exists, so that a simple, easy, safe and reliable process device is urgently needed to realize dust removal and dewatering of gas and realize full utilization of resources.

Disclosure of Invention

According to the technical problems, the utility model provides a gas pretreatment system skid which is characterized by comprising a skid-mounted bottom plate, a coarse filter, a cooling dehydration heat exchanger, an explosion-proof Roots blower and a fine filter, wherein the coarse filter, the cooling dehydration heat exchanger, the explosion-proof Roots blower and the fine filter are sequentially arranged on the upper surface of the skid-mounted bottom plate from left to right, the coarse filter is arranged on the skid-mounted bottom plate, the cooling dehydration heat exchanger is arranged on the skid-mounted bottom plate through a heat exchanger bracket, the explosion-proof Roots blower is arranged on the skid-mounted bottom plate through an installation bracket, the fine filter is arranged on the skid-mounted bottom plate, the left side of the coarse filter is provided with an air inlet, the right end of the coarse filter is provided with an air outlet, the air outlet of the coarse filter is connected with the left end of the cooling dehydration heat exchanger through a connecting pipeline, the right end of the cooling dehydration heat exchanger is connected with an inlet at the upper end of the explosion-proof Roots blower through a connecting pipeline and an inlet connecting hose, an outlet at the right end of the explosion-proof Roots blower is connected with an air inlet at the left end of a fine filter through an outlet connecting hose, and an air outlet is formed at the right end of the fine filter;

a shock insulation pad is arranged between the mounting bracket and the skid-mounted bottom plate;

the bottom parts of the coarse filter, the fine filter and the cooling dehydration heat exchanger are all provided with a blow-down valve;

the cooling dehydration heat exchanger comprises an inlet pipe box, a heat exchanger shell, a heat exchange pipe, a water cooling cavity, a chilled water inlet, a chilled water outlet and an outlet pipe box, an inlet pipe box is arranged on the left side of the heat exchanger shell, an outlet pipe box is arranged on the right side of the heat exchanger shell, the inlet channel box and the outlet channel box are connected with the heat exchanger shell through flanges, the center of the heat exchanger shell is provided with a heat exchange tube, the space formed between the heat exchange tube and the heat exchanger shell is a water cooling cavity, a chilled water inlet is arranged at the left upper part of the front side of the heat exchanger shell and is communicated with the water cooling cavity, a chilled water outlet is arranged at the right lower part of the front side of the shell of the heat exchanger and is communicated with the water cooling cavity, an upper flow guide baffle is arranged on the inner upper inner wall of the outlet pipe box, a lower flow guide baffle is arranged on the inner lower inner wall of the outlet pipe box, the upper flow guide baffle and the lower flow guide baffle are inclined towards the left, and a water-sealed drain pipe is also arranged at the bottom of the outlet pipe box;

the water cooling cavity is also internally provided with a plurality of baffle plates, a plurality of heat conduction structures are also arranged in the heat exchange tube, each heat conduction structure consists of a support beam and a mesh plate, the support beams are arranged on the inner sides of the heat exchange tube in a shape of Chinese character 'mi' and are connected with the inner wall of the heat exchange tube, the mesh plates are arranged among gaps of the support beams, and each mesh plate is a metal plate structure provided with a plurality of meshes;

the water-sealed drain pipe is a U-shaped drain pipe.

The utility model has the advantages that:

the utility model can realize the integrated dust removal and dehydration and the increase operation of low-pressure low-concentration gas through the coarse filter and the fine filter which are arranged on a skid-mounted bottom plate, and can be skid-mounted and moved to adapt to different working conditions, the dust removal operation of low-pressure low-concentration gas can be realized through the coarse filter and the fine filter, the explosion-proof Roots blower can realize the pressurization operation, the cooling dehydration heat exchanger can realize the water removal effect, the cooling dehydration heat exchanger cools the gas through water cooling to separate out water vapor in the gas, then the gas is hung on a flow guide baffle plate and dripped to be discharged from a water seal type drain pipe, the dehydration operation is realized to the maximum extent, the arrangement of a mesh plate and a baffle plate can improve the heat exchange efficiency of the gas and chilled water, the structure of the utility model can realize the pretreatment operation of low-pressure low-concentration gas and the subsequent supply of a gas generator set, the explosion-proof Roots blower is simple and easy to implement, has a safe and reliable structure, and can input enough gas pressure into the gas internal combustion generator set within a certain time.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a structural diagram of the present invention

FIG. 2 is a partially cut-away enlarged view of the cooling and dewatering heat exchanger of the present invention;

FIG. 3 is a cross-sectional view of a side view of the cooling and dewatering heat exchanger of the present invention;

fig. 4 is a schematic structural view of the water-sealed drain pipe of the present invention.

As shown in the figure: 1. skid-mounting a bottom plate; 2. a coarse filter; 3. a cooling dehydration heat exchanger; 4. an explosion-proof Roots blower; 5. a fine filter; 6. a heat exchanger support; 7. mounting a bracket; 8. the inlet is connected with a hose; 9. the outlet is connected with a hose; 10. a shock insulation pad; 11. a blowdown valve; 12. an inlet header; 13. a heat exchanger housing; 14. a heat exchange pipe; 15. a water-cooled cavity; 16. a chilled water inlet; 17. a chilled water outlet; 18. an outlet pipe box; 19. an upper flow guide baffle plate; 20. a lower flow guide baffle; 21. a water-sealed drain pipe; 22. a support beam; 23. mesh plates.

Detailed Description

The technical solutions of the present invention will be described more clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Example 1

The utility model provides a gas pretreatment system sled, which is characterized by comprising a skid-mounted bottom plate 1, a coarse filter 2, a cooling dehydration heat exchanger 3, an explosion-proof Roots blower 4 and a fine filter 5, wherein the coarse filter 2, the cooling dehydration heat exchanger 3, the explosion-proof Roots blower 4 and the fine filter 5 are sequentially arranged on the upper surface of the skid-mounted bottom plate 1 from left to right, the coarse filter 2 is arranged on the skid-mounted bottom plate 1, the cooling dehydration heat exchanger 3 is arranged on the skid-mounted bottom plate 1 through a heat exchanger bracket 6, the explosion-proof Roots blower 4 is arranged on the skid-mounted bottom plate 1 through an installation bracket 7, the fine filter 5 is arranged on the skid-mounted bottom plate 1, the left side of the coarse filter 2 is provided with an air inlet, the right end of the coarse filter 2 is provided with an air outlet, the air outlet of the coarse filter 2 is connected with the left end of the cooling dehydration heat exchanger 3 through a connecting pipeline, the right end of the cooling dehydration heat exchanger 3 is connected with an inlet of the explosion-proof Roots blower 4 through a connecting pipeline and an inlet connecting hose 8, an outlet at the right end of the explosion-proof Roots blower 4 is connected with an air inlet at the left end of the fine filter 5 through an outlet connecting hose 9, and an air outlet is formed at the right end of the fine filter 5;

a shock insulation pad 10 is arranged between the mounting bracket 7 and the skid-mounted bottom plate 1;

the bottom parts of the coarse filter 2, the fine filter 5 and the cooling dehydration heat exchanger 3 are all provided with a blow-down valve 11;

the cooling and dewatering heat exchanger 3 comprises an inlet pipe box 12, a heat exchanger shell 13, a heat exchange pipe 14, a water cooling cavity 15, a chilled water inlet 16, a chilled water outlet 17 and an outlet pipe box 18, wherein the inlet pipe box 12 is arranged on the left side of the heat exchanger shell 13, the outlet pipe box 18 is arranged on the right side of the heat exchanger shell 13, the inlet pipe box 12 and the outlet pipe box 18 are both connected with the heat exchanger shell 13 through flanges, the heat exchange pipe 14 is arranged in the center of the heat exchanger shell 13, a space formed between the heat exchange pipe 14 and the heat exchanger shell 13 is the water cooling cavity 15, the chilled water inlet 16 is arranged on the left upper side of the front side of the heat exchanger shell 13 and is communicated with the water cooling cavity 15, an upper flow guide baffle plate 19 is arranged on the inner upper inner wall in the outlet pipe box 18, a lower flow guide baffle plate 20 is arranged on the inner wall in the outlet pipe box 18, and the upper flow guide baffle plate 19 and the lower flow guide plate 20 are both inclined towards the left, the bottom of the outlet pipe box 18 is also provided with a water-sealed drain pipe 21;

a plurality of baffle plates are further arranged in the water cooling cavity 15, a plurality of heat conduction structures are further arranged in the heat exchange tube 14, each heat conduction structure is composed of a supporting beam 22 and a mesh plate 23, the supporting beams 22 are arranged on the inner sides of the heat exchange tubes 14 in a shape of Chinese character mi and are connected with the inner walls of the heat exchange tubes 14, the mesh plates 23 are arranged among gaps of the supporting beams 22, and the mesh plates 23 are metal plate structures provided with a plurality of meshes;

the water-sealed drain pipe 21 is a U-shaped drain pipe.

Example 2

When the utility model is used, low-pressure low-concentration gas is input from the air inlet of the coarse filter 2, the gas cleanliness accords with the requirements of the cooling dehydration heat exchanger 3 and the explosion-proof Roots blower 4 by pre-filtering the coarse filter 2, then the gas reaches the cooling dehydration heat exchanger 3 and enters the heat exchange tube 14 from the inlet tube box 12, the chilled water enters the water cooling cavity 15 from the chilled water inlet 16 and is accelerated to circulate in the water cooling cavity 15 through the baffle plate and is discharged from the chilled water outlet 17, the baffle plate is a plate for changing the flow direction of the fluid and is commonly used for designing a shell pass medium flow passage of the shell-and-tube heat exchanger, which can improve the heat transfer effect and also play a role of supporting the tube bundle, the baffle plate is the existing device, so the structure of the baffle plate is not repeated, the gas flowing through the heat exchange tube 14 is cooled by the chilled water in the water cooling cavity 15, the mesh plate 23 can improve the contact area of the gas and the wall of the heat exchange tube 14, the heat exchange efficiency is improved, water drops can be separated out after the gas is cooled, the water drops are attached to an upper flow guide baffle plate 19 and a lower flow guide baffle plate 20 of an outlet pipe box 18 and drop to a water seal type drain pipe 21 along the flow guide baffle plates and are discharged, because the water seal type drain pipe 21 is of a U-shaped structure shown in the figure 4, water exists in the U-shaped structure, the gas cannot leak out of the U-shaped structure, only the water can pass through the U-shaped structure, the sealing performance of the device is ensured, the dehydrated gas flows out of the cooling dehydration heat exchanger 3, enters the explosion-proof Roots blower 4 through the inlet connecting hose 8 and is discharged into the fine filter 5 through the outlet connecting Roots hose 9, the explosion-proof Roots blower 4 is used for carrying out pressurization operation on the gas, the pressure is prevented from being insufficient when the gas is subsequently output to the gas-fired power generator set after passing through the fine filter 5, the Roots blower 4 can vibrate in work, and a shock insulation cushion 10 is arranged at the bottom, the inlet and the outlet are of a hose structure and cannot be influenced by vibration, and the cleanliness and the water content of the gas filtered by the secondary fine filter 5 meet the combustion requirements and are output to a gas internal combustion generator set for combustion power generation;

the 2 filter fineness of coarse filter that this practicality was gone on is 50 mu m, fine filter 5's filter fineness is 1-3 mu m, and entry gas pressure is 2 ~ 4KPa, and 2 pressure losses of coarse filter are less than or equal to 0.5KPa, and explosion-proof roots's fan 4 can reach gas pressure more than 25KPa, and gas internal combustion generating set's income gas pressure generally is 15 ~ 20KPa, so fine filter 5's pressure loss can be 5KPa at most, so choose filter fineness 1-3 mu m filter core to satisfy the operating mode completely for use.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. The utility model discloses each part that mentions is the common technique in prior art, and the technical personnel of this trade should understand, the utility model discloses do not receive the restriction of above-mentioned embodiment, the description only is the explanation in above-mentioned embodiment and the description the principle of the utility model, under the prerequisite that does not deviate from the spirit and the scope of the utility model, the utility model discloses still can have various changes and improvement, these changes and improvement all fall into the protection of claim the utility model is within the scope. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A gas pretreatment system pry is characterized by comprising a prying bottom plate, a coarse filter, a cooling dehydration heat exchanger, an explosion-proof Roots blower and a fine filter, wherein the coarse filter, the cooling dehydration heat exchanger, the explosion-proof Roots blower and the fine filter are sequentially arranged on the upper surface of the prying bottom plate from left to right, the coarse filter is arranged on the prying bottom plate, the cooling dehydration heat exchanger is arranged on the prying bottom plate through a heat exchanger support, the explosion-proof Roots blower is arranged on the prying bottom plate through an installation support, the fine filter is arranged on the prying bottom plate, an air inlet is arranged at the left side of the coarse filter, an air outlet is arranged at the right end of the coarse filter, the air outlet of the coarse filter is connected with the left end of the cooling dehydration heat exchanger through a connecting pipeline, the right end of the cooling dehydration heat exchanger is connected with an inlet at the upper end of the explosion-proof Roots blower through a connecting pipeline and an inlet connecting hose, an outlet at the right end of the explosion-proof Roots blower is connected with an air inlet at the left end of the fine filter through an outlet connecting hose, and an air outlet is formed at the right end of the fine filter.

2. The gas pretreatment system pry as defined in claim 1, wherein the temperature reduction dehydration heat exchanger comprises an inlet tube box, a heat exchanger shell, heat exchange tubes, a water-cooling cavity, a chilled water inlet, a chilled water outlet and an outlet tube box, the inlet tube box is arranged on the left side of the heat exchanger shell, the outlet tube box is arranged on the right side of the heat exchanger shell, the inlet tube box and the outlet tube box are both connected with the heat exchanger shell through flanges, the heat exchange tubes are arranged in the center of the heat exchanger shell, a space formed between the heat exchange tubes and the heat exchanger shell is the water-cooling cavity, the chilled water inlet is arranged on the upper left side of the front side of the heat exchanger shell and communicated with the water-cooling cavity, the chilled water outlet is arranged on the lower right side of the front side of the heat exchanger shell and communicated with the water-cooling cavity, an upper flow guide baffle is arranged on the inner wall of the outlet tube box, and a lower flow guide baffle is arranged on the inner wall of the outlet tube box, the upper flow guide baffle and the lower flow guide baffle are inclined towards the left, and a water-sealed drain pipe is further arranged at the bottom of the outlet pipe box.

3. The gas pretreatment system pry as claimed in claim 2, wherein a plurality of baffle plates are further arranged in the water cooling cavity, a plurality of heat conduction structures are further arranged in the heat exchange tube, each heat conduction structure comprises a support beam and a mesh plate, the support beam is arranged on the inner side of the heat exchange tube in a shape like a Chinese character mi and is connected with the inner wall of the heat exchange tube, the mesh plates are arranged among gaps of the support beams, and each mesh plate is a metal plate structure provided with a plurality of meshes.

4. The gas pretreatment system pry according to claim 2, wherein the water-sealed drain pipe is a U-shaped drain pipe.

5. The gas pretreatment system pry as claimed in claim 1, wherein a shock insulation pad is arranged between the mounting bracket and the prying base plate.

6. The gas pretreatment system pry as claimed in claim 1, wherein blow-down valves are arranged at the bottoms of the coarse filter, the fine filter and the cooling dehydration heat exchanger.