CN113398693A

CN113398693A - Wet desulphurization device for coal bed gas

Info

Publication number: CN113398693A
Application number: CN202110895437.6A
Authority: CN
Inventors: 陈育通; 宇文恒斌
Original assignee: Shaanxi Dongtian Energy Technology Co ltd
Current assignee: Shaanxi Dongtian Energy Technology Co ltd
Priority date: 2021-08-05
Filing date: 2021-08-05
Publication date: 2021-09-17

Abstract

The invention relates to a coal bed gas wet desulphurization device, which comprises a bottom plate, an impurity removal mechanism and a desulphurization mechanism, wherein the impurity removal mechanism comprises a spraying mechanism, a filtering mechanism and an impurity removal box, the filtering mechanism and the spraying mechanism are both arranged in the impurity removal box, the spraying mechanism is positioned above the filtering mechanism, the desulphurization mechanism comprises a reaction box, the top of the reaction box is fixedly provided with a motor, an output shaft of the motor is fixedly provided with a shaft rod, the outer side of the shaft rod is fixedly provided with a stirring sheet, the outer side of the shaft rod is fixedly provided with a first mounting rod and a second mounting rod positioned above the first mounting rod, a scraping plate is fixedly connected between the ends of the first mounting rod and the second mounting rod, which are far away from the shaft rod, the inner side of the reaction box is fixedly provided with a partition plate, and the top of the partition plate. This coal bed gas wet desulphurization unit can make gas and medicament contact more abundant, and the desulfurization effect is more thorough to effectual desulfurization efficiency that has improved.

Description

Wet desulphurization device for coal bed gas

Technical Field

The invention relates to the technical field of coal bed gas desulfurization, in particular to a coal bed gas wet desulfurization device.

Background

Coal bed gas is an unconventional energy source, the main component of the coal bed gas is methane, the reserves of coal bed gas resources in China are abundant, if the coal bed gas can be effectively utilized, the condition of insufficient energy sources at present can be relieved, H2S widely exists in the coal bed gas, is toxic and harmful and strong corrosive impurities, is colorless and has odor of smelly eggs, can generate deep hole corrosion and embrittlement on metals such as iron and steel, has great harm to a human nervous system, can cause death and environmental pollution due to large amount of suction, therefore, the coal bed gas is required to be subjected to desulfurization and purification treatment before being utilized, is beneficial to environmental protection, can also effectively improve the utilization efficiency of the coal bed gas, and in the production process of the coal bed gas, the coal bed gas often contains inorganic sulfur, organic sulfur and other impurities which can block pipelines, corrode equipment and tools or pollute the environment during combustion, and needs to be removed, and the desulfurization has two types of dry method and wet method, the desulfurizer for dry desulfurization is iron oxide, generally adopts cast iron chips or natural swamp iron ore, and is mixed with coarse sawdust with volume being several times in order to make fuel gas easily pass through and enlarge a contact surface.

The efficient desulfurization device provided by the invention CN 111773912A granted by China has the advantages that the low-speed forward rotation and the low-speed reverse rotation are switched back and forth, the circulation rod rotates the flue gas to form circulation, the thread block sprays slurry upwards, and the flue gas contacts with a larger area of flue gas in the time of falling downwards by gravity after moving upwards in the air, so that the desulfurization quality is improved.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a coal bed gas wet desulphurization device which has the advantages of good desulphurization effect and the like, and solves the problems that impurities contained in gas cannot be treated before desulphurization at present, so that the efficiency of later desulphurization reaction can be influenced, and a desulphurization machine body can generate precipitates after desulphurization to be attached to the inner wall of the desulphurization machine body, so that the cleaning is very troublesome, time and labor are wasted, the inner space is reduced if the cleaning is not carried out for a long time, the desulphurization speed can be influenced, and the inconvenience is caused to normal.

In order to achieve the purpose, the invention provides the following technical scheme: a coal bed gas wet desulphurization device comprises a bottom plate, an impurity removal mechanism and a desulphurization mechanism, wherein the desulphurization mechanism and the impurity removal mechanism are both arranged at the top of the bottom plate, and the impurity removal mechanism is positioned at the left side of the desulphurization mechanism;

the impurity removing mechanism comprises a spraying mechanism, a filtering mechanism and an impurity removing box, wherein the filtering mechanism and the spraying mechanism are both arranged in the impurity removing box, and the spraying mechanism is positioned above the filtering mechanism;

desulfurization mechanism includes the reaction box, the top fixed mounting of reaction box has the motor, the output shaft fixed mounting of motor has the axostylus axostyle, axostylus axostyle outside fixed mounting has the stirring piece, the outside fixed mounting of axostylus axostyle has first installation pole and is located the second installation pole of first installation pole top, fixedly connected with scraper blade between the one end of axostylus axostyle is kept away from to first installation pole and second installation pole, the inboard fixed mounting of reaction box has the baffle, evenly distributed's bleeder vent is seted up at the top of baffle.

Further, edulcoration mechanism includes the pump body of fixed mounting on edulcoration case right side, the pump end fixedly connected with drinking-water pipe of the pump body, the play water end fixedly connected with inlet tube of the pump body, the one end fixedly connected with that the pump body was kept away from to the inlet tube spouts the dish, edulcoration case fixed mounting is at the top of bottom plate, and the fixed movable mounting in front of edulcoration case has the chamber door, and the front of edulcoration case is opened and is inlayed and have the glass window.

Further, spout a set fixed mounting in the inboard of edulcoration case, the bottom fixed mounting who spouts the dish has evenly distributed's atomizer, the left side fixed mounting of edulcoration case has the intake pipe, the one end that the pump body was kept away from to the drinking-water pipe runs through and extends to the inside of edulcoration case, the one end that the pump body was kept away from to the outlet pipe runs through the edulcoration case and extends to spouting in the dish.

Further, the right side fixed mounting of edulcoration case has the connecting pipe, the outside fixedly connected with check valve of connecting pipe, and the one end that the edulcoration case was kept away from to the connecting pipe runs through and extends to the inside of reaction box.

Further, filtering mechanism includes that quantity is two and respectively fixed mounting at the connecting block and the spacing section of thick bamboo of edulcoration case left side wall and right side wall, the left side the spout has been seted up to the bottom of connecting block, the inboard sliding connection of spout has the slider.

Further, the bottom of slider and the equal fixed mounting in bottom of right side connecting block have the installation piece, two movable mounting has the filter screen between the relative one side of installation piece, and the position of chamber door is corresponding with the position of filter screen.

Furthermore, round holes are formed in the left side and the right side of the limiting cylinder, a connecting rod is movably connected between the inner sides of the round holes, a sliding plate is fixedly mounted on the outer side of the connecting rod, a pull disc is fixedly connected to the left end of the connecting rod, and the diameter of the pull disc is larger than that of the round holes.

Further, slide sliding connection is in the inboard of spacing section of thick bamboo, the right-hand member of connecting rod and the left side fixed connection of left side installation piece, the left side movable mounting of slide has expanding spring, expanding spring's the left and right sides is laminated with the left side wall of spacing section of thick bamboo and slide respectively mutually, and expanding spring is located the outside of connecting rod, the fixed orifices has been seted up at the top of baffle, and the inboard fixed mounting of fixed orifices has the bearing piece, the one end that the motor was kept away from to the axostylus axostyle runs through and extends to the bottom of bearing piece.

Further, spacing section of thick bamboo fixed mounting is at the left side wall of edulcoration case, the doctor-bar is laminated mutually with the inner wall of reaction box, the doctor-bar is the rubber material, the right side fixed mounting of reaction box has the outlet duct.

Further, the bottom fixed mounting of reaction box has the fluid-discharge tube, the outside fixedly connected with flowing back valve of fluid-discharge tube, the left side fixed mounting of reaction box has communicating pipe, and the top fixed mounting of connecting pipe has first valve, and the top fixedly connected with inlet tube of first valve, inlet tube are linked together with the water boundary water source, and the left end fixed mounting of connecting pipe has the second valve, and the left end fixed mounting of second valve has into the pencil, and it is linked together with external medicament to advance the pencil.

Compared with the prior art, the technical scheme of the application has the following beneficial effects:

1. this coal bed gas wet flue gas desulfurization device, impurity removal mechanism through setting up before desulfurization mechanism can clear up the filtration to the foreign particle that contains in the coal bed gas, the going on of influence desulfurization reaction in having avoided the foreign particle to enter into desulfurization mechanism, the speed of later stage desulfurization reaction has been improved, and through opening second valve and motor, can carry out even mixture with gas through the medicament of adding under the rotation of stirring piece, make gas and medicament contact more abundant, the desulfurization is more thorough, thereby desulfurization efficiency has been improved.

2. This coal bed gas wet flue gas desulfurization device, can pull down the filter screen through opening chamber door pulling connecting rod and clear up or change, the dismouting process is simple and convenient, time saving and labor saving, it is more convenient to use, the result of use is improved, simultaneously when the clearance is maintained to the reaction box to periodic need, the accessible is closed the second valve and is opened first valve and motor, can carry into the reaction box with the water source through the inlet tube in, the scraper blade that drives simultaneously with the motor cooperates and can clear up the attachment on the reaction box inner wall, the effectual normal use who guarantees the reaction box, thereby the result of use has been improved.

Drawings

FIG. 1 is a schematic structural diagram of a wet desulfurization apparatus for coal bed methane according to the present invention;

FIG. 2 is a schematic structural diagram of an impurity removal mechanism of a wet desulfurization device for coal bed methane according to the present invention;

FIG. 3 is a schematic view of a portion A of the coal bed methane wet desulfurization apparatus shown in FIG. 2;

FIG. 4 is a schematic structural diagram of a desulfurization mechanism of a wet desulfurization device for coal bed methane according to the present invention;

FIG. 5 is a front view of an impurity removing mechanism of a wet desulphurization device for coal bed methane.

In the figure: the device comprises a base plate 1, an impurity removing mechanism 2, a spraying mechanism 21, a filtering mechanism 22, an impurity removing box 23, a desulfurizing mechanism 3, a pump body 211, a water pumping pipe 212, a water inlet pipe 213, a spraying disc 214, an atomizing nozzle 215, a connecting block 221, a sliding chute 222, a sliding block 223, an installing block 224, a filter screen 225, a limiting cylinder 226, a round hole 227, a connecting rod 228, a sliding plate 229, a 2210 telescopic spring, a reaction box 31, a motor 32, a shaft rod 33, a stirring sheet 34, a first installing rod 35, a second installing rod 36, a scraping plate 37, a partition plate 38 and air holes 39.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the coal bed methane wet desulphurization device in this embodiment includes a bottom plate 1, an impurity removing mechanism 2 and a desulphurization mechanism 3, the desulphurization mechanism 3 and the impurity removing mechanism 2 are both disposed on the top of the bottom plate 1, the impurity removing mechanism 2 is disposed on the left side of the desulphurization mechanism 3, the impurity removing mechanism 2 is a structure for cleaning and filtering impurity particles contained in the coal bed methane, the desulphurization mechanism 3 is a structure for removing organic sulfur and inorganic sulfur gas contained in the coal bed methane, the impurity particles contained in the coal bed methane can be effectively removed by the impurity removing mechanism 2, the impurity particles are prevented from entering the desulphurization mechanism 3 to affect the reaction rate of desulphurization, and the added drugs can be sufficiently mixed with the organic sulfur and inorganic sulfur gas contained in the coal bed methane by the desulphurization mechanism 3, so that the gas is more sufficiently contacted with the reagents, the desulfurization effect is more thorough, thereby effectively improving the desulfurization efficiency and being convenient for use.

The impurity removing mechanism 2 in this embodiment is a structure for cleaning and filtering impurity particles contained in the coal bed gas.

Referring to fig. 1, 2, 3 and 5, the impurity removing mechanism 2 includes a spraying mechanism 21, a filtering mechanism 22 and an impurity removing box 23, the filtering mechanism 22 and the spraying mechanism 21 are both disposed in the impurity removing box 23, and the spraying mechanism 21 is disposed above the filtering mechanism 22.

In addition, edulcoration case 23 fixed mounting is at the top of bottom plate 1, and the positive fixed movable mounting of edulcoration case 23 has the chamber door, and the position of chamber door is corresponding with filter screen 225's position, and the openly of edulcoration case 23 is opened and is inlayed and have the glass window, can observe the condition of the inside water of edulcoration case 23 through the glass window, and the back fixed mounting of edulcoration case 23 has the drain pipe, and the outside threaded connection of drain pipe has the tube cap, can be with the water discharge in the edulcoration case 23 through opening the tube cap, changes.

The spraying mechanism 21 in this embodiment is a structure for spraying water to remove particles containing foreign matter in the gas.

Referring to fig. 1 and 2, the impurity removing mechanism 2 includes a pump body 211 fixedly installed on the right side of the impurity removing box 23, a water pumping pipe 212 is fixedly connected to a water pumping end of the pump body 211, a water inlet pipe 213 is fixedly connected to a water outlet end of the pump body 212, a spray plate 214 is fixedly connected to one end of the water inlet pipe 213 far away from the pump body 211, and evenly distributed atomizing nozzles 215 are fixedly installed at the bottom of the spray plate 214.

In addition, the left side fixed mounting of edulcoration case 23 has the intake pipe, and the right-hand member of intake pipe runs through and extends to in the edulcoration case 23, and coal bed gas can enter into in the edulcoration case 23 through the intake pipe.

Moreover, one end of the pumping pipe 212, which is far away from the pump body 211, penetrates and extends into the trash box 23, the spray tray 214 is fixedly installed on the inner side of the trash box 23, and one end of the discharging pipe 214, which is far away from the pump body 211, penetrates through the trash box 23 and extends into the spray tray 214.

The filter mechanism 22 in the present embodiment is a structure for filtering foreign particles adhering to water droplets.

Referring to fig. 1, 2, 3 and 5, the filtering mechanism 22 includes two connecting blocks 221 and two limiting cylinders 226 respectively and fixedly installed on the left side wall and the right side wall of the impurity removing box 23, a sliding groove 222 is formed at the bottom of the left connecting block 221, a sliding block 223 is slidably connected to the inner side of the sliding groove 222, mounting blocks 224 are fixedly installed at the bottom of the sliding block 223 and the bottom of the right connecting block 221, a filter screen 225 is movably installed between the two opposite sides of the mounting blocks 224, circular holes 227 are formed at the left side and the right side of the limiting cylinder 226, a connecting rod 228 is movably connected between the inner sides of the two circular holes 227, a sliding plate 229 is fixedly installed at the outer side of the connecting rod 228, the sliding plate 229 is slidably connected to the inner side of the limiting cylinder 226, the right end of the connecting rod 228 is fixedly connected to the left side of the left mounting block 224, and a telescopic spring 2210 is movably installed at the left side of the sliding plate 229.

In addition, the limiting cylinder 226 is fixedly installed on the left side wall of the impurity removing box 23, the left end of the connecting rod 228 is fixedly connected with a pull disc, and the diameter of the pull disc is larger than that of the round hole 227, so that the limiting effect is achieved.

The left and right sides of the extension spring 2210 are respectively attached to the left side wall of the position-limiting cylinder 226 and the slide plate 229, and the extension spring 2210 is located outside the connecting rod 228.

It should be noted that, in this embodiment, the sliding block 223 connected by the left mounting block 224 is slidably connected in the sliding slot 222, so that the left mounting block 224 can move more stably when the connecting rod 228 is pulled.

Simultaneously, the right side fixed mounting of edulcoration case 23 has the connecting pipe, the outside fixedly connected with check valve of connecting pipe, and the one end that edulcoration case 23 was kept away from to the connecting pipe runs through and extends to the inside of reaction box 31, can prevent through the check valve that sets up that the medicament among the reaction box 31 from flowing back to edulcoration case 23, only allows in the one-way through of coal bed gas enters into reaction box 31.

The desulfurization means 3 in this embodiment is configured to remove organic sulfur and inorganic sulfur gases contained in the coal bed gas.

Referring to fig. 1 and 4, the desulfurization mechanism 3 in this embodiment includes a reaction box 31, a motor 32 is fixedly mounted on the top of the reaction box 31, a shaft rod 33 is fixedly mounted on an output shaft of the motor 32, a stirring plate 34 is fixedly mounted on the outer side of the shaft rod 33, a first mounting rod 35 and a second mounting rod 36 located above the first mounting rod 35 are fixedly mounted on the outer side of the shaft rod 33, a scraping plate 37 is fixedly connected between ends of the first mounting rod 35 and the second mounting rod 36, which are far away from the shaft rod 33, a partition plate 38 is fixedly mounted on the inner side of the reaction box 31, and air holes 39 are uniformly distributed on the top of the partition plate 38.

In addition, a drain pipe is fixedly mounted at the bottom of the reaction box 31, a drain valve is fixedly connected to the outer side of the drain pipe, the liquid inside the reaction box 31 can be discharged by opening the drain valve, a fixing hole is formed in the top of the partition plate 38, a bearing block is fixedly mounted on the inner side of the fixing hole, and one end, far away from the motor 32, of the shaft rod 33 penetrates through and extends to the bottom of the bearing block.

Moreover, the reaction box 31 is fixedly installed at the top of the bottom plate 1, the communicating pipe is fixedly installed at the left side of the reaction box 31, the scraping piece 37 is attached to the inner wall of the reaction box 31, the scraping piece 37 is made of rubber, the gas outlet pipe is fixedly installed at the right side of the reaction box 31, and the desulfurized coal bed gas is led to a downstream gathering and transportation pressurizing station through the gas outlet pipe.

It should be noted that, the connecting pipe in this embodiment is a pipe connection piece with three ends connected, a first valve is fixedly installed at the top end of the connecting pipe, an inlet pipe is fixedly connected to the top end of the first valve, the inlet pipe is connected to a water source in the water boundary, the first valve is opened to convey the water source to the reaction box 31, a second valve is fixedly installed at the left end of the connecting pipe, a medicine inlet pipe is fixedly installed at the left end of the second valve, the medicine inlet pipe is connected to an external medicine, the second valve is opened, and the medicine can be added into the reaction box 31 through the medicine inlet pipe.

The working principle of the above embodiment is as follows:

(1) firstly, the box door is opened, the pull disc is pulled to the left side, the pull disc drives the mounting block 224 connected with the connecting rod 228 to move, meanwhile, the sliding block 223 connected with the mounting block 224 on the left side moves in the sliding groove 222, at the moment, the connecting rod 228 drives the sliding plate 229 on the outer side to press the expansion spring 2210 to enable the expansion spring 2210 to be stressed and compressed, then, one side of the filter screen 225 is placed into the mounting block 224 on the right side, the filter screen 225 is kept in a horizontal state, then, the pull disc is loosened, the expansion spring 2210 pushes the connecting rod 228 on the inner side of the sliding plate 229 to move, the mounting block 224 connected with the connecting rod 228 can mount and fix the position of the filter screen 225, when the filter screen needs to be cleaned and replaced, the box door is opened, the pull disc on the left side is pulled to enable the mounting block 224 on the left side to move towards the left side, and therefore, the filter screen can be dismounted conveniently, the maintenance efficiency is high, and the using effect is good.

(2) Coal bed gas enters into in the edulcoration case 23 through the intake pipe, through opening pump body 211, pump body 211 can extract the water of edulcoration case 23 inside through drinking-water pipe 212 and inlet tube 213 and carry to spouting in the dish 214 again, last atomizer 215 through evenly distributed spouts, in the gas that contains particle impurity through spouting in dish 214 below, the impurity granule that contains in tiny water granule and the gas fuses, and drop to filter screen 225 under the action of gravity on, can filter the impurity granule that the aquatic contains through filter screen 255, make impurity stop on filter screen 225, water then falls into the bottom of edulcoration case 23 again, and then can manifold cycles use, the dust removal effect is good, and is energy-saving and environment-friendly.

(3) Get rid of impurity particle's coal bed gas and enter into reaction box 31 through the connecting pipe in, flowing back valve and first valve are in the closed condition this moment, open second valve and motor 32, external medicament enters into reaction box 31 in through advancing the pencil, motor 32 drives a plurality of stirring pieces 34 in the axostylus axostyle 33 outside simultaneously and rotates, and then stirring piece 34 can make organic sulfur and the inorganic sulphur gas that contains in the medicine that adds and the coal bed gas carry out abundant mixture, make gas and medicament contact more abundant, the gas after the processing passes bleeder vent 39 through baffle 38 and enters into the outlet duct, and then the defeated pressure boost station of collection of transportation to low reaches again.

(4) When regularly clearing up reaction box 31 is inside, at first close the second valve, open the solution discharge after the flowing back valve reacts the inside medicament, close the flowing back valve again and open first valve, external water source enters into reaction box 31 through communicating pipe this moment, it drives axostylus axostyle 33 rotation to open motor 32 again, axostylus axostyle 33 drives first installation pole 35 and second installation pole 36 and rotates simultaneously, and then drive scraper blade 37 and rotate, pivoted scraper blade 37 can clear up reaction box 31's inner wall, scrape adnexed debris down, then close first valve again and open the flowing back valve, with inside foul liquid discharge can, the cleaning process is simple and convenient, the effectual reaction box 31 result of use that has improved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The wet desulfurization device for the coal bed methane is characterized by comprising a bottom plate (1), an impurity removal mechanism (2) and a desulfurization mechanism (3), wherein the desulfurization mechanism (3) and the impurity removal mechanism (2) are both arranged at the top of the bottom plate (1), and the impurity removal mechanism (2) is positioned on the left side of the desulfurization mechanism (3);

the impurity removing mechanism (2) comprises a spraying mechanism (21), a filtering mechanism (22) and an impurity removing box (23), the filtering mechanism (22) and the spraying mechanism (21) are both arranged in the impurity removing box (23), and the spraying mechanism (21) is positioned above the filtering mechanism (22);

desulfurization mechanism (3) are including reaction box (31), the top fixed mounting of reaction box (31) has motor (32), the output shaft fixed mounting of motor (32) has axostylus axostyle (33), axostylus axostyle (33) outside fixed mounting has stirring piece (34), the outside fixed mounting of axostylus axostyle (33) has first installation pole (35) and second installation pole (36) that are located first installation pole (35) top, fixedly connected with scraper blade (37) between the one end of axostylus axostyle (33) is kept away from in first installation pole (35) and second installation pole (36), the inboard fixed mounting of reaction box (31) has baffle (38), evenly distributed bleeder vent (39) are seted up at the top of baffle (38).

2. The wet desulfurization device for coal bed methane according to claim 1, characterized in that: edulcoration mechanism (2) include the pump body (211) on edulcoration case (23) right side, the pumping end fixedly connected with drinking-water pipe (212) of the pump body (211), the play water end fixedly connected with inlet tube (213) of the pump body (212), the one end fixedly connected with that the pump body (211) was kept away from in inlet tube (213) spouts dish (214), edulcoration case (23) fixed mounting has the chamber door at the top of bottom plate (1), the positive fixed movable mounting of edulcoration case (23), and the openly of edulcoration case (23) is opened and is inlayed and have the glass window.

3. The wet desulfurization device for coal bed methane according to claim 2, characterized in that: spout dish (214) fixed mounting in the inboard of edulcoration case (23), the bottom fixed mounting of spouting dish (214) has evenly distributed's atomizer (215), the left side fixed mounting of edulcoration case (23) has the intake pipe, the one end that the pump body (211) was kept away from in drinking-water pipe (212) runs through and extends to the inside of edulcoration case (23), the one end that the pump body (211) was kept away from in outlet pipe (214) runs through edulcoration case (23) and extends to spout in dish (214).

4. The wet desulfurization device for coal bed methane according to claim 1, characterized in that: the right side fixed mounting of edulcoration case (23) has the connecting pipe, the outside fixedly connected with check valve of connecting pipe, and the one end that edulcoration case (23) was kept away from to the connecting pipe runs through and extends to the inside of reaction box (31).

5. The wet desulfurization device for coal bed methane according to claim 1, characterized in that: filtering mechanism (22) are including quantity be two and respectively fixed mounting at edulcoration case (23) left side wall and right side wall connecting block (221) and spacing section of thick bamboo (226), the left side spout (222) have been seted up to the bottom of connecting block (221), the inboard sliding connection of spout (222) has slider (223).

6. The wet desulfurization device for coal bed methane according to claim 2 or 5, characterized in that: the bottom of slider (223) and the bottom of right side connecting block (221) all fixed mounting have installation piece (224), two movable mounting has filter screen (225) between the relative one side of installation piece (224), and the position of chamber door corresponds with the position of filter screen (225).

7. The wet desulfurization device for coal bed methane according to claim 5, characterized in that: round hole (227) have all been seted up to the left and right sides of a spacing section of thick bamboo (226), two equal swing joint has connecting rod (228) between the inboard of round hole (227), the outside fixed mounting of connecting rod (228) has slide (229), the left end fixedly connected with of connecting rod (228) draws the dish, and the diameter of drawing the dish is greater than the diameter of round hole (227).

8. The coal bed methane wet desulphurization device according to claim 6 or 7, characterized in that: the sliding plate (229) is connected to the inner side of the limiting cylinder (226) in a sliding mode, the right end of the connecting rod (228) is fixedly connected with the left side of the left mounting block (224), an expansion spring (2210) is movably mounted on the left side of the sliding plate (229), the left side and the right side of the expansion spring (2210) are respectively attached to the left side wall of the limiting cylinder (226) and the sliding plate (229), and the expansion spring (2210) is located on the outer side of the connecting rod (228).

9. The wet desulfurization device for coal bed methane according to claim 5, characterized in that: spacing section of thick bamboo (226) fixed mounting is at the left side wall of edulcoration case (23), the inner wall of doctor-bar (37) and reaction box (31) is laminated mutually, doctor-bar (37) are the rubber material, the right side fixed mounting of reaction box (31) has the outlet duct, the fixed orifices has been seted up at the top of baffle (38), and the inboard fixed mounting of fixed orifices has the bearing block, the one end that motor (32) were kept away from in axostylus axostyle (33) runs through and extends to the bottom of bearing block.

10. The wet desulfurization device for coal bed methane according to claim 1, characterized in that: the bottom fixed mounting of reaction box (31) has the fluid-discharge tube, the outside fixedly connected with flowing back valve of fluid-discharge tube, the left side fixed mounting of reaction box (31) has communicating pipe, and the top fixed mounting of connecting pipe has first valve, and the top fixedly connected with inlet tube of first valve, inlet tube are linked together with the water source in water, and the left end fixed mounting of connecting pipe has the second valve, and the left end fixed mounting of second valve has into pencil, and it is linked together with external medicament to advance the pencil.