CN112439299B - Gas purification device for gas power generation and use method thereof - Google Patents

Abstract

The invention belongs to the technical field of gas purification, and provides a gas purification device for gas power generation and a using method thereof, wherein the gas purification device comprises a tower body, the tower body comprises a plurality of cavities, and the cavities are circumferentially distributed along the central axis of the tower body; the plurality of cavities are used for purifying the gas and are connected in series, and the gas purification device is used for improving the purity of the gas.

Description

Gas purification device for gas power generation and use method thereof

Technical Field

The invention relates to the technical field of gas purification, in particular to a gas purification device for gas power generation.

Background

Coal bed gas is called coal mine gas in coal mines. According to new resource evaluation results, the onshore coal bed gas resource amount of China is 36.8 billion cubic meters, is equivalent to the onshore conventional natural gas resource amount (38 billion cubic meters), and is inferior to Russia and Canada. The main component of the coal bed gas is methane, and when the concentration of the methane in the air reaches 5% -16%, the methane can explode when meeting open fire, which is the root of coal mine gas explosion accidents. The coal bed gas is not utilized and is directly discharged into the atmosphere, and the greenhouse effect of the coal bed gas is about 21 times of that of carbon dioxide. The coal mine gas power generation can effectively solve coal mine gas accidents, improve the safe production conditions of coal mines, is beneficial to increasing clean energy supply and reducing greenhouse gas emission, and achieves multiple targets of protecting life, resources and environment.

The purity of gas in the gas power generation technology is crucial, and underground gas contains a large amount of impurities such as hydrogen sulfide, and the impurities can generate a large amount of harmful substances after being combusted, and gas power generation is not used.

If the application number is: 201710172855.6, which discloses a methane pressure swing adsorption tower device, wherein carbon dioxide in methane is adsorbed by pressure swing adsorption technology, and carbon dioxide and methane are respectively removed through a first cavity and a second cavity, wherein the main components of methane and gas are basically the same, and the methane and methane are used as the intermediate material of pressure swing adsorption, so that the methane and methane are used as the main comparison documents of the invention, but the pressure swing adsorption still has the following problems that the pressure swing adsorption adsorbs and desorbs waste gas according to the pressure value, in the above patent, the pressure of the inner cavity is reduced when the required methane is discharged, so the desorption process is existed, namely, methane is discharged all the time, the methane concentration is reduced, so the concentration of the discharged methane gas is reduced all the time along with the discharge of methane, the purity of the final methane gas obtained is not particularly desirable in general, where it is not possible to obtain it by the above-mentioned patents if it is desired to obtain a high purity methane gas continuously.

Disclosure of Invention

The invention aims to provide a gas purification device for gas power generation, which is used for improving the purity of gas.

The embodiment of the invention is realized by the following technical scheme: a gas purification device for gas power generation comprises a tower body, wherein the tower body comprises a plurality of cavities which are circumferentially distributed along the central axis of the tower body; the gas purification tower is characterized in that the plurality of cavities are used for purifying gas, the tower bodies are connected in series and are respectively provided with a first cavity, a second cavity, a third cavity and a fourth cavity, each cavity comprises a gas outlet cavity, an adsorption cavity and a gas inlet cavity, the gas outlet cavities comprise a first gas outlet cavity and a second gas outlet cavity, the first gas outlet cavity is communicated with the adsorption cavity through a first switch device, the second gas outlet cavity is communicated with the adsorption cavity through a second switch device, and the first switch device and the second switch device are used for switching on and off communicated pipelines; the first air outlet cavity of the first cavity is communicated with the air inlet cavity of the second cavity through an air pump, the first air outlet cavity of the second cavity is communicated with the air inlet cavity of the third cavity through an air pump, the first air outlet cavity of the third cavity is provided with an exhaust pipe used for exhausting gas, and the exhaust pipe is provided with an air pump; an air inlet pipe is arranged in an air inlet cavity of the first cavity, air outlets of a first air outlet cavity, a second air outlet cavity and a third air outlet cavity of the third cavity are connected in parallel and then are connected with an air inlet cavity of the fourth cavity through an air pump, a first air outlet cavity of the fourth cavity is connected with the air inlet pipe through the air pump, and a second air outlet cavity of the fourth cavity is provided with a methane outlet; each adsorption cavity is internally provided with a solid adsorbent, and the connecting pipeline is provided with an electromagnetic valve.

Further, the solid adsorbent is in the form of particles and comprises zeolite molecular sieve, silica gel, activated carbon or carbon molecular sieve.

The tower body is internally provided with a ventilating plate, the ventilating plate is connected with the inner wall of the tower body in a sliding and sealing manner and is used for separating an adsorption cavity and an air inlet cavity in the first cavity, the second cavity, the third cavity and the fourth cavity, a blocking plate is arranged in the adsorption cavity, the periphery of the blocking plate is fixedly connected to the inner wall of the tower body, and a solid adsorbent is fully distributed between the blocking plate and the ventilating plate; the pressing device is used for upwards pushing the air permeable plate to press the solid adsorbent, and air holes are formed in the air permeable plate and the barrier plate.

Further, closing device includes the wind chamber, the flabellum, rotation axis and sleeve, the axis department of four cavitys still is equipped with a sealed section of thick bamboo, the upper portion of a sealed section of thick bamboo and the body fixed connection of tower body, the lower part and the ventilative board sliding seal of a sealed section of thick bamboo are connected, the rotation axis sets up in a sealed section of thick bamboo, the wind chamber sets up in the bottom of tower body, the one end fixed connection flabellum of rotation axis, the flabellum sets up in the wind chamber, the wind chamber is connected to the blast pipe, the middle part of rotation axis is equipped with the external screw thread, the sleeve is equipped with the internal thread, inside and outside screw thread intermeshing and telescopic one end butt ventilative board, be equipped with the gag lever post on the ventilative board and be used for restricting the sleeve rotation, be equipped with sliding seal board between ventilative board and the wind chamber and be used for cutting apart first cavity, the second cavity, the chamber of admitting air of third cavity and fourth cavity, the wind chamber is equipped with the gas vent, under the atmospheric pressure of blast pipe, the flabellum can rotate.

Furthermore, an air compression cavity is further arranged, the air compression cavity is arranged in the air cavity in a surrounding mode, the exhaust port is communicated with the air compression cavity, a high-pressure air port is arranged on the air compression cavity, and an electromagnetic valve is arranged on the high-pressure air port.

The temperature swing adsorption device comprises temperature swing pipes, a reversing disc, heat pipes and cold pipes, wherein the temperature swing pipes are respectively arranged in the first cavity, the second cavity, the third cavity and the fourth cavity, one part of each temperature swing pipe is arranged in the adsorbent, and each temperature swing pipe is provided with an inlet and an outlet; the reversing disc is arranged in a top interlayer of the tower body and is driven to rotate by the rotating shaft, an outer annular pipeline and an inner annular pipeline are arranged in the reversing disc, three cold water pipes are connected below the outer annular pipeline in a through mode, a hot water pipe is connected below the inner annular pipeline in a through mode, water outlets of the hot water pipe and the cold water pipe are arranged at pipe orifices of one end of the temperature changing pipe, notches are arranged above the outer annular pipe and the inner annular pipe and are sealed through the tower body, the hot water pipe is communicated with the inner annular pipeline, and the cold water pipe is communicated with outer annular management; the other end of the temperature changing pipe is used for draining water.

Further, still be equipped with the locating part, the locating part includes telescopic link and support frame, the locating part sets up in wind intracavity portion, be equipped with the locating hole on arranging the rotation axis of wind intracavity in, the stiff end of telescopic link passes through the support frame to be fixed in wind intracavity portion, the relative rotation axis of telescopic link sets up perpendicularly, the removal end of telescopic link sets up in the locating hole after the extension, the locating hole distributes around the rotation axis with the axle circumference of the axis of rotation axis, the quantity of locating hole is unanimous with the quantity of alternating temperature pipe.

Further, the sleeve comprises an inner cylinder and an outer cylinder, and the inner cylinder is arranged in the placing groove of the outer cylinder;

the ventilation plate is provided with a groove, and a baffle plate, a spring and a plurality of wedge-shaped abutting parts are arranged in the groove; the spring is arranged between the baffle and the groove, and the wedge-shaped abutting piece penetrates through the baffle and extends out of the groove;

the outer edge of the outer cylinder is provided with a convex ring for abutting against the baffle;

the inner cylinder consists of four quarter components, a return spring is arranged between each quarter component and the outer cylinder, and each component of the inner cylinder slides outwards by compressing the return spring;

a limiting clamp is arranged between the inner cylinder and the outer cylinder and used for limiting other multiple degrees of freedom of the inner cylinder relative to the outer cylinder;

the inner cylinder is provided with an internal thread which is meshed with the external thread of the rotating shaft; the upper surface of inner tube is equipped with wedge groove spare and is used for cooperating wedge butt piece, and under the cooperation of wedge butt piece and wedge groove spare, each subassembly of inner tube is outwards opened.

The use method of the gas purification device for gas power generation comprises the following steps:

s1: filling the solid granular molecular sieve into the adsorption layer, and checking the safety availability of the whole pipeline, the air pump and the valve;

s2: conveying gas into the first cavity through the gas inlet cavity of the first cavity, and closing the first switch device and the second switch device in the first cavity;

s3: after the internal pressure reaches a threshold value, opening a second switch device in the first cavity to discharge gas into an air inlet cavity of the fourth cavity through an air pump, after the internal pressure is reduced to a certain threshold value, closing the second switch device, opening the first switch device, conveying waste gas into an air inlet cavity of the second cavity through the air pump, simultaneously closing an air inlet pipe of the first cavity, and enabling the internal cavity to generate negative pressure by using the air pump;

s4: the second chamber discharges gas into the third chamber and the fourth chamber in the same manner as in S3, while the apparatus in the first chamber is restored to the initial state, and the step S3 is repeated again; discharging gas from the third chamber into the fourth chamber in the same manner as in S3, discharging the gas into the air compression chamber through the first exhaust pipe, and repeating S3 again when the first and second chambers are restored to the initial state;

s5: the 4 th cavity repeats the mode of S3 to discharge the required high-purity gas, and the waste gas is discharged into the gas inlet cavity of the first cavity;

s6: after enough waste gas is stored in the air compression cavity, the temperature swing adsorption device is started, the heat pipe is connected with hot water, the cold pipe is connected with cold water, the air outlet quantity of the air compressor is controlled by controlling the electromagnetic valve at the high-pressure air inlet, so that the fan blades are driven to rotate, the reversing disc is driven to rotate by the fan blades, the temperature swing pipes in the first cavity, the second cavity, the third cavity and the fourth cavity are communicated in a staged mode, and the adsorbent can be better desorbed by heating the heat pipe; when pressure rising and adsorption are needed, the cooling pipe is communicated for cooling; the rotation angle of the fan blades is controlled through the limiting piece, so that the rotation angle of the reversing disc is controlled;

s7: the rotation of the rotating shaft is driven by the rotation of the fan blades, the rotating shaft is matched with the inner cylinder to form a screw rod transmission structure, the inner cylinder is used as a sliding part with an outer cylinder to move upwards to extrude a baffle in the ventilating plate, the baffle is used for transmitting force to the ventilating plate through a spring, and the granular adsorbent is extruded through the ventilating plate; when the granular adsorbent is extruded and is not moved, the baffle continues to compress the spring upwards, the wedge-shaped abutting part moves downwards relative to the inner cylinder at the moment, abuts against the wedge-shaped groove part, the inner cylinder is pushed to expand towards the circumference, the internal thread on the inner cylinder is separated from the external thread on the rotating shaft, and the sleeve does not move upwards any more; at the moment, under the action of the spring, the protruding ring is separated from the baffle, the wedge-shaped abutting part is separated from the wedge-shaped groove part, under the action of the reset spring, the inner cylinder is inwards gathered, the rotating shaft is meshed again, the upward movement is continued, the adsorbent is extruded, and when the adsorbent is not extruded, the actions are repeated, so that the adsorbent is extruded in the whole working process.

The technical scheme of the embodiment of the invention at least has the following advantages and beneficial effects:

the gas is purified by ingeniously arranging four chambers in one tower body, the concentration of the gas purification is fully improved, and the problem existing in the pressure swing adsorption is avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is an expanded connection schematic view of a gas purification device for gas power generation according to embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of a pressing mechanism of a gas purification device for gas power generation according to embodiment 2 of the present invention;

fig. 3 is a schematic end view of a tower of a gas purification apparatus for gas power generation according to embodiment 3 of the present invention;

fig. 4 is a schematic structural diagram of a temperature swing adsorption device in a gas purification apparatus for gas power generation according to embodiment 3 of the present invention;

fig. 5 is a schematic structural diagram of a reversing disc of a gas purifying device for gas power generation according to embodiment 3 of the present invention;

FIG. 6 is an enlarged view of A in FIG. 2;

fig. 7 is a first view illustrating the working states of the inner cylinder and the outer cylinder of the gas purifying device for gas power generation according to embodiment 3 of the present invention;

fig. 8 is a second view illustrating the operation states of the middle inner barrel and the outer barrel of the gas purifying device for gas power generation according to embodiment 3 of the present invention;

icon: 1-tower body, 2-cavity body, 3-solid adsorbent, 11-first cavity body, 12-second cavity body, 13-third cavity body, 14-fourth cavity body, 111-first air outlet cavity, 112-second air outlet cavity, 113-adsorption cavity, 114-air inlet cavity, 115-air pump, 116-first switch device, 117-second switch device, 118-air outlet pipe, 119-methane outlet, 120-air inlet pipe, 21-air permeable plate, 22-baffle plate, 4-pressing device, 41-air cavity, 42-fan blade, 43-rotating shaft, 44-sleeve, 45-limiting rod, 46-sliding sealing plate, 47-air compression cavity, 48-high-pressure air port, 49-sealing cylinder and 50-temperature-changing adsorption device, 51-temperature changing pipe, 52-reversing disc, 53-cold pipe, 54-heat pipe, 541-outer annular pipeline, 531-inner annular pipeline, 532-cold water pipe, 542-hot water pipe, 61-outer cylinder, 62-inner cylinder, 63-baffle, 64-spring, 65-wedge-shaped abutting part, 66-projecting ring, 67-wedge-shaped groove part, 68-reset spring, 71-telescopic rod, 72-support frame and 73-positioning hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are usually placed in when used, the terms are only used for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

Mainly solved the not high problem of gas concentration that leads to when the pressure variation that single pressure swing adsorption equipment exists in this embodiment, specifically, the structure is as follows:

as shown in fig. 1, a gas purification device for gas power generation includes a tower body 1, the tower body 1 includes four cavities 2, the four cavities 2 are uniformly and circumferentially distributed along a central axis of the tower body 1, it should be noted that the number of the cavities is not limited, and is determined according to the required purification impurities.

The four cavities 2 are connected in series, and can be connected according to the inlet and outlet pipelines of the existing single purification tower, so that the purification efficiency is improved, and the land area is saved; in this example, the following connection method is mainly used to increase the purification concentration of the gas.

The tower body 1 is respectively provided with a first cavity 11, a second cavity 12, a third cavity 13 and a fourth cavity 14, each cavity comprises an air outlet cavity, an adsorption cavity 113 and an air inlet cavity 114 which are arranged from top to bottom, the air outlet cavities comprise a first air outlet cavity 111 and a second air outlet cavity 112, the first air outlet cavity 111 is communicated with the adsorption cavity 113 through a first switch device 116, the second air outlet cavity 112 is communicated with the adsorption cavity 113 through a second switch device 117, and the first switch device 117 and the second switch device 117 are used for switching on and off a communication pipeline; the volume of the other four chambers is not particularly limited, and a cavity with a quarter-circle area is adopted in the embodiment.

The first air outlet cavity 111 of the first cavity 11 is communicated with the air inlet cavity 114 of the second cavity 12 through an air pump 115, and the exhaust gas in the first cavity 11 is pumped into the second cavity 12 through the air pump 115 for primary purification; the first air outlet cavity 111 of the second cavity 12 is communicated with the air inlet cavity 114 of the third cavity 13 through an air pump 115, and similarly, the air in the second cavity 12 is pumped into the third cavity 13 and then purified again; the first air outlet cavity 111 of the third cavity 13 is provided with an exhaust pipe 118 for exhausting gas, the exhaust pipe 118 is provided with an air pump 115, the air pump 115 mainly provides a negative pressure pumping effect to facilitate desorption of the adsorbent, and the air pump 115 in the same first cavity 11 and the second cavity 12 also plays a negative pressure pumping effect; an air inlet pipe 120 is arranged in an air inlet cavity 114 of the first cavity 11 to provide the initial gas, air outlets of second air outlet cavities 112 of the first cavity 11, the second cavity 12 and the third cavity 13 are connected in parallel and then connected with the air inlet cavity 114 of the fourth cavity 14 through an air pump 115, the gas purified by the first cavity 11, the second cavity 12 and the third cavity 13 is further purified by the fourth cavity 14 to obtain the required high-purity gas, and meanwhile, the first cavity 11, the second cavity 12 and the third cavity 13 continuously convey the primarily purified gas into the fourth cavity 14, so that the high-purity gas can be continuously output through the fourth cavity 14 by controlling the on and off of the pipeline electromagnetic valve; a first air outlet cavity 111 of the fourth cavity 14 is connected with an air inlet pipe 120 through an air pump 115 to ensure the recycling of waste gas, and a second air outlet cavity 112 of the fourth cavity 14 is provided with a methane outlet 119; each adsorption chamber 113 is provided with a solid adsorbent 3, and it should be noted here that since the hydrogen sulfide gas in the purified gas is used in this embodiment, a molecular sieve is made of solid granular alkali metal aluminosilicate, or a zeolite molecular sieve is used, and specifically, the type of the molecular sieve is selected according to the gas to be filtered.

In this embodiment, the work engineering is as follows: purifying gas containing hydrogen sulfide waste gas by using a first cavity 11, sending the purified gas into a fourth cavity 14, then sending the waste gas purified by the first cavity 11 into a second cavity 12 for secondary purification, sending the purified gas into the fourth cavity 14, discharging the waste gas through an air pump 115, purifying the gas collected from the three cavities again by the fourth cavity 14, sending out the purified gas, and sending the waste gas into the first cavity 11; then, it should be noted that, in the desorption process in the whole process, the negative pressure is pumped by the air pump 115, when the cycle is first;

1: the first cavity 11 is pressurized for adsorption, and the second cavity and the third cavity do not work;

2: the first cavity 11 discharges gas into the fourth cavity 14;

3: the first cavity 11 decompresses and exhausts waste gas, the second cavity 12 pressurizes and adsorbs waste gas, and the third cavity 13 does not work;

4: the second cavity 12 discharges gas into the fourth cavity 14, and the first cavity 11 is pressurized and adsorbed;

5: the second cavity 12 discharges the exhaust gas to the third cavity 13, and the third cavity 13 is pressurized and adsorbed; the first cavity 11 discharges gas into the fourth cavity 14;

6: the third cavity 13 discharges gas into the fourth cavity 14 for desorption, the first cavity 11 discharges the gas into the second cavity 12, and the second cavity 12 is pressurized for adsorption;

7: the fourth cavity 14 is used for discharging the purified gas and the waste gas to the first cavity 11, the waste gas is introduced into the first cavity 11 for pressurization and adsorption, and meanwhile, the second cavity 12 and the third cavity 13 work circularly;

therefore, gas can be discharged continuously, the pressurizing threshold value of the fourth cavity 14 does not need to be set to be very high, and the actual requirement can be met; here, the uninterrupted means that a new discharge pipeline may be connected to a pipeline leading from the first cavity 11, the second cavity 12, or the third cavity 13 to the fourth cavity 14 to achieve uninterrupted discharge, and of course, the purity of the gas thus set is not consistent with that of the gas purified by the fourth cavity 14, and the gas is collected as required.

Example 2

In order to further increase the contact area, the molecular sieve is set to be granular, but the molecular sieve is too loose to be filled, and when the filling amount is not enough, the molecular sieve pulverization is more easily caused, because the direction of the internal airflow is changed when the adsorption cylinder is used for adsorption and regeneration, the molecular sieve in the adsorption cylinder is in a boiling state for a long time, the friction probability among the molecular sieves in the state is increased, the molecular sieve pulverization is very easy to cause, the pulverized molecular sieve can not well adsorb the waste gas and can cause the service life of the equipment to be shortened, therefore, the compressing device 4 is further arranged in the embodiment, and the specific structure is as follows:

as shown in fig. 2, the compressing device 4 is arranged at the bottom of the air inlet cavity 114 of the first cavity 11, the second cavity 12, the third cavity 13 and the fourth cavity 14, a vent plate 21 is arranged in the tower body 1, the vent plate 21 is connected with the inner wall of the tower body 1 in a sliding and sealing manner, the vent plate 21 is used for separating the adsorption cavity 113 and the air inlet cavity 114 in the first cavity 11, the second cavity 12, the third cavity 13 and the fourth cavity 14, a barrier plate 22 is arranged in the adsorption cavity 113, the periphery of the barrier plate 22 is fixedly connected to the inner wall of the tower body 1, and the solid adsorbent 3 is fully distributed between the barrier plate 22 and the vent plate 21; the compressing device 4 is used for pushing the air permeable plate 21 upwards to compress the solid adsorbent 3, air permeable holes are formed in the air permeable plate 21 and the blocking plate 22, the adsorbent (molecular sieve) is compressed through the air permeable plate 21 and the blocking plate 22, and the adsorbent is guaranteed not to creep under the high-pressure and negative-pressure states to cause pulverization.

The air permeable plate 21 can provide a supporting force through the telescopic rod 71, and the pressing device 4 adopts the air pressure telescopic rod 71 or the electronic telescopic rod 71, it should be noted that, in this embodiment, the pressing device 4 is implemented as follows.

The pressing device 4 comprises an air cavity 41, fan blades 42, a rotating shaft 43 and a sleeve 44, a sealing cylinder 49 is further arranged at the central axis of the four cavities, the upper part of the sealing cylinder 49 is fixedly connected with the body of the tower body 1, the lower part of the sealing cylinder 49 is connected with the ventilating plate 21 in a sliding and sealing manner, the sealing cylinder 49, the ventilating plate 21 and the tower body 1 form a sliding and sealing structure, the sliding and sealing assembly only needs to adopt a common structure on the market, and in addition, the moving amount of the molecular sieve is not particularly large, so that the displacement amount of the sliding and sealing element does not need to be particularly large, and the conventional sliding and sealing element is fully sufficient.

The rotary shaft 43 is arranged in the sealing cylinder 49, the air cavity 41 is arranged at the bottom of the tower body 1, one end of the rotary shaft 43 is fixedly connected with the fan blades 42, the fan blades 42 are arranged in the air cavity 41, the exhaust pipe 118 is connected with the air cavity 41, the middle part of the rotary shaft 43 is provided with an external thread, the sleeve 44 is provided with an internal thread, the internal thread and the external thread are meshed with each other, one end of the sleeve 44 is abutted against the air-permeable plate 21, the air-permeable plate 21 is provided with a limiting rod 45 for limiting the rotation of the sleeve 44, a sliding sealing plate 46 is arranged between the air-permeable plate 21 and the air cavity 41 for dividing the air inlet cavities 114 of the first cavity 11, the second cavity 12, the third cavity 13 and the fourth cavity 14, the air cavity 41 is provided with an exhaust port, the fan blades 42 can rotate under the air pressure of the exhaust pipe 118, the size and the dimension of the exhaust pipe 118 are not limited as long as the fan blades 42 can be driven to rotate, here, the exhaust pipe 118 collects the exhaust gas through the air pump 115 on the third cavity 13, providing a power source, and treating the waste gas according to requirements after the waste gas is used; it should be further noted that the rotating shaft 43 is driven to rotate by the fan blades 42, the rotating shaft 43 and the sleeve 44 form screw rod transmission, so that the sleeve 44 can move up and down, the ventilation plate 21 is extruded by upward movement of the sleeve 44, and the molecular sieve is pressed by the ventilation plate 21 and the blocking plate 22, when the sleeve 44 cannot move up, i.e., the fan blades 42 are locked and cannot rotate, the waste gas can be directly discharged, no influence is caused on the whole equipment, and the purpose of self-adaptive pressing is achieved.

Example 3

In this embodiment, in order to further ensure the working effect of the adsorbent, that is, the working efficiency of the adsorbent depends on the desorption effect, the negative pressure is not particularly large due to the negative pressure pumping by the air pump 115, so that the temperature swing adsorption mechanism is further provided to accelerate the desorption effect of the adsorbent by raising the temperature, and the specific structure is as follows:

the main structure is the same as the second embodiment, and the difference is that, as shown in fig. 3-8, an air compression cavity 47 is further provided, the air compression cavity 47 is arranged around the inside of the air cavity 41, the exhaust port is communicated with the air compression cavity 47, a high-pressure air port 48 is arranged on the air compression cavity 47, an electromagnetic valve is arranged on the high-pressure air port 48, waste gas brought by the exhaust pipe 118 is stored through the air compression cavity 47, the electromagnetic valve is used for controlling the controller to remove time, and the purpose of flexible and controllable is achieved sequentially.

In this embodiment, a temperature swing adsorption apparatus 50 is further provided, where the temperature swing adsorption apparatus 50 includes a temperature swing pipe 51, a reversing disc 52, a heat pipe 54 and a cold pipe 53, the temperature swing pipe 51 is respectively provided inside the first chamber 11, the second chamber 12, the third chamber 13 and the fourth chamber 14, and a part of each temperature swing pipe 51 is provided inside the adsorbent, so that the adsorbent is heated or cooled by heat conduction of the temperature swing pipe 51, and desorption is achieved when the adsorbent is heated.

The temperature changing pipe 51 is provided with an inlet and an outlet; the reversing disc 52 is arranged in the interlayer at the top of the tower body 1, the reversing disc 52 is driven by the rotating shaft 43 to rotate, as shown in fig. 5, an outer annular pipeline 541 and an inner annular pipeline 531 are arranged in the reversing disc 52, three cold water pipes 532 are connected below the outer annular pipeline 541 in a penetrating manner, a hot water pipe 542 is connected below the inner annular pipeline 531 in a penetrating manner, water outlets of the hot water pipe 542 and the cold water pipe 532 are arranged at pipe orifices at one end of the temperature changing pipe 51, notches are arranged above the outer annular pipe and the inner annular pipeline and are sealed through the tower body 1, the heat pipes 54 are communicated with the inner annular pipeline 531, and the cold pipes 53 are communicated with outer annular management; the other end of the temperature changing pipe 51 is used for draining water, the cold pipe 53 and the cold water pipe 532 are communicated by the outer annular pipeline 541 through the arrangement, and cold water is conveyed into the temperature changing pipe 51 through the cold water pipe 532; similarly, the inner annular pipeline 531 is used for communicating the heat pipe 54 with the hot water pipe 542, and the hot water is conveyed into the temperature changing pipe 51 through the hot water pipe 542; therefore, the adsorbent is heated or cooled, so that the effect of temperature-variable desorption is achieved, and it should be noted that in the working process of this embodiment, there is no process in which all the adsorbents need to be desorbed, so that only one hot water pipe 542 is needed, most of the adsorbents used in the first cavity 11 are desorbed, and naturally, one hot water pipe 542 or two hot water pipes 542 are disposed, depending on the number of cavities; if five chambers are used, it is the same as if two hot water pipes 542 were used, and the hot water pipes 542 are separately provided.

The wind power generator is further provided with a limiting piece, the limiting piece comprises an expansion link 71 and a support frame 72, the limiting piece is arranged inside the wind cavity 41, a positioning hole 73 is formed in the rotating shaft 43 arranged in the wind cavity 41, the fixed end of the expansion link 71 is fixed inside the wind cavity 41 through the support frame 72, the expansion link 71 is vertically arranged relative to the rotating shaft 43, the moving end of the expansion link 71 is arranged in the positioning hole 73 after being extended, the positioning holes 73 are circumferentially distributed around the rotating shaft 43 by the axis of the rotating shaft 43, and the number of the positioning holes 73 is consistent with the number of the variable temperature pipes; the rotation of the rotating shaft 43 is limited by a limiting member, specifically, the rotation of the rotating shaft 43 is limited by the matching of the telescopic rod 71 and the positioning hole 73, the number and the orientation of the positioning hole 73 and the variable temperature pipe are consistent, and in addition, a turn number counter can be arranged at the tail end of the rotating shaft 43 to conveniently record the rotation turn number of the rotating shaft 43 so as to conveniently determine the position of the variable temperature pipe.

In this embodiment, since the rotating shaft 43 is required to rotate continuously to drive the reversing disc 52 to rotate, so as to realize the alternation of the hot and cold pipes 53, the screw rod structure composed of the sleeve 44 and the rotating rod cannot be applied to this embodiment, and for this reason, the following setting mechanism is adopted in this embodiment.

The sleeve 44 includes an inner cylinder 62 and an outer cylinder 61, the inner cylinder 62 is disposed in the placement groove of the outer cylinder 61; the ventilation plate 21 is provided with a groove, and a baffle 63, a spring 64 and a plurality of wedge-shaped abutting pieces 65 which are arranged horizontally and vertically are arranged in the groove; the spring 64 is arranged between the baffle 63 and the groove, and the wedge-shaped abutting piece 65 penetrates through the baffle 63 and extends out of the groove; the outer edge of the outer cylinder 61 is provided with a convex ring 66 for abutting against the baffle 63; the inner cylinder 62 is composed of four quarter components, a return spring 68 is arranged between each quarter component and the outer cylinder 61, and each component of the inner cylinder 62 can be opened outwards through the return spring 68; a limiting clamp (not labeled) is arranged between the inner cylinder 62 and the outer cylinder 61 and used for limiting other multiple degrees of freedom of the inner cylinder 62 relative to the outer cylinder 61, so that the inner cylinder 62 can only be opened and closed in the groove of the outer cylinder 61; the inner cylinder 62 is provided with an internal thread which is meshed with an external thread of the rotating shaft 43, the inner cylinder 62 and the rotating shaft 43 form a screw rod structure through the meshing of the inner cylinder 62 and the limiting of the limiting rod 45, and the inner cylinder 62 can move upwards under the rotation of the rotating shaft 43; the upper surface of the inner cylinder 62 is provided with a wedge-shaped groove member 67 for matching with a wedge-shaped abutting member, and under the matching of the wedge-shaped abutting member and the wedge-shaped groove member 67, all components of the inner cylinder 62 are opened outwards, and the internal thread and the external thread of the inner cylinder 62 cannot be meshed when the inner cylinder is opened, so that the screw rod mechanism does not exist; it should be noted that the above-mentioned structure is the main structure of the present embodiment, and under the conventional knowledge of those skilled in the art, it can be modified appropriately, for example, the size of each component is reduced to avoid the problem of interference or insufficient displacement during the movement, and no specific limitation is made on it, and some structures not disclosed in the present embodiment may all adopt the prior art.

In this embodiment, a using method is also included, and the whole working gas purification working process is consistent as in the embodiment, specifically as follows:

s1: filling the solid granular molecular sieve into the adsorption layer, and checking the safety availability of the whole pipeline, the air pump 115 and the valve;

s2: gas is conveyed into the first cavity 11 through the gas inlet cavity 114 of the first cavity 11, and the first switch device 116 and the second switch device 117 in the first cavity 11 are closed;

s3: after the internal pressure reaches a threshold value, opening a second switch device 117 in the first cavity 11 to discharge the gas into the air inlet cavity 114 of the fourth cavity 14 through an air pump 115, after the internal pressure drops to a certain threshold value, closing the second switch device 117, opening a first switch device 116, conveying the waste gas into the air inlet cavity 114 of the second cavity 12 through the air pump 115, simultaneously closing an air inlet pipe 120 of the first cavity 11, and utilizing the air pump 115 to enable the internal cavity to generate negative pressure;

s4: the second chamber 12 discharges the gas into the third chamber 13 and the fourth chamber 14 in the same manner as in S3 while the apparatus in the first chamber 11 is restored to the original state, and the step S3 is repeated again; discharging the gas from the third chamber 13 into the fourth chamber 14 in the same manner as in S3, discharging the gas into the air compression chamber 47 through the first gas discharge pipe 118, and at the same time, returning the first and second chambers 11 and 12 to the original state, and repeating the step S3 again;

s5: the 4 th cavity repeats the manner of S3 to discharge the gas with the required high purity and discharge the exhaust gas into the gas inlet cavity 114 of the first cavity 11;

s6: after enough waste gas is stored in the air compression cavity 47, the temperature swing adsorption device 50 is started, the hot pipe 54 is connected with hot water, the cold pipe 53 is connected with cold water, the air outlet quantity of the air compressor is controlled by controlling the electromagnetic valve at the high-pressure air port 48, so that the fan blades 42 are driven to rotate, the reversing disc 52 is driven to rotate by the fan blades 42, the temperature swing pipes 51 positioned in the first cavity 11, the second cavity 12, the third cavity 13 and the fourth cavity 14 are communicated in a staged manner, and the adsorbent can be better desorbed by heating the hot pipe 54; when the pressure is required to be increased and the adsorption is carried out, the cold pipe 53 is communicated for cooling; the rotation angle of the fan blades 42 is controlled through the limiting piece, so that the rotation angle of the reversing disc 52 is controlled;

s7: the rotation of the rotating shaft 43 is driven by the rotation of the fan blades 42, the rotating shaft 43 is matched with the inner cylinder 62 to form a screw rod transmission structure, wherein the inner cylinder 62 is used as a sliding part with the outer cylinder 61 to move upwards to extrude a baffle 63 in the ventilating plate 21, the baffle 63 is utilized to transmit force to the ventilating plate 21 through a spring 64, and granular adsorbent is extruded through the ventilating plate 21; when the granular adsorbent is extruded and immobilized, the baffle 63 continues to compress the spring 64 upwards, at the moment, the wedge-shaped abutting piece 65 moves downwards relative to the inner cylinder 62 and abuts against the wedge-shaped groove piece 67 to push the inner cylinder 62 to expand towards the periphery, the internal thread on the inner cylinder 62 is separated from the external thread on the rotating shaft 43, and the sleeve 44 does not move upwards any more; at this time, under the action of the spring 64, the protruding ring 66 is separated from the baffle 63, the wedge-shaped abutting piece 65 is separated from the wedge-shaped groove piece 67, under the action of the return spring 68, the inner cylinder 62 is folded inwards, reengages the rotating shaft 43, continues to move upwards to extrude the adsorbent, and when the adsorbent is not extruded, the actions are repeated, so that the adsorbent is extruded in the whole working process.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. The utility model provides a gas purification device of gas power generation which characterized in that: the tower body comprises a plurality of cavities which are circumferentially distributed along a central axis of the tower body; the cavities are used for purifying gas and are connected in series; the tower body is provided with a first cavity, a second cavity, a third cavity and a fourth cavity respectively, each cavity comprises an air outlet cavity, an adsorption cavity and an air inlet cavity which are arranged from top to bottom, the air outlet cavities comprise a first air outlet cavity and a second air outlet cavity, the first air outlet cavity is communicated with the adsorption cavity through a first switch device, the second air outlet cavity is communicated with the adsorption cavity through a second switch device, and the first switch device and the second switch device are used for switching on and off communicated pipelines; the first air outlet cavity of the first cavity is communicated with the air inlet cavity of the second cavity through an air pump, the first air outlet cavity of the second cavity is communicated with the air inlet cavity of the third cavity through an air pump, the first air outlet cavity of the third cavity is provided with an exhaust pipe used for exhausting gas, and the exhaust pipe is provided with an air pump; the air inlet cavity of the first cavity is provided with an air inlet pipe, the air outlets of the first cavity, the second cavity and the second air outlet cavity of the third cavity are connected in parallel and then are connected with the air inlet cavity of the fourth cavity through an air pump, the first air outlet cavity of the fourth cavity is connected with the air inlet pipe through the air pump, and the second air outlet cavity of the fourth cavity is provided with a methane outlet; each adsorption cavity is internally provided with a solid adsorbent, and a connecting pipeline is provided with an electromagnetic valve.

2. A gas purification apparatus for gas power generation according to claim 1, wherein the solid adsorbent is in the form of particles and comprises zeolite molecular sieve, silica gel, activated carbon or carbon molecular sieve.

3. The gas purification device for gas power generation according to claim 2, further comprising a compressing device, wherein the compressing device is disposed at the bottom of the gas inlet chambers of the first, second, third and fourth chambers, a gas permeable plate is disposed in the tower body, the gas permeable plate is slidably and hermetically connected to the inner wall of the tower body, the gas permeable plate is configured to separate the adsorption chamber and the gas inlet chamber of the first, second, third and fourth chambers, a blocking plate is disposed in the adsorption chamber, the periphery of the blocking plate is fixedly connected to the inner wall of the tower body, and the solid adsorbent is filled between the blocking plate and the gas permeable plate; the pressing device is used for pushing the air permeable plate upwards to press the solid adsorbent, and air holes are formed in the air permeable plate and the barrier plate.

4. The gas purifying device for gas power generation according to claim 3, wherein the compressing device comprises a wind chamber, blades, a rotating shaft and a sleeve, a sealing cylinder is further disposed at the central axis of the four chambers, the upper portion of the sealing cylinder is fixedly connected with the body of the tower body, the lower portion of the sealing cylinder is slidably and sealingly connected with the gas permeable plate, the rotating shaft is disposed in the sealing cylinder, the wind chamber is disposed at the bottom of the tower body, one end of the rotating shaft is fixedly connected with the blades, the blades are disposed in the wind chamber, the exhaust pipe is connected with the wind chamber, the middle portion of the rotating shaft is provided with external threads, the sleeve is provided with internal threads, the internal threads and the external threads are engaged with each other, one end of the sleeve abuts against the gas permeable plate, the gas permeable plate is provided with a limit rod for limiting the rotation of the sleeve, and a sliding sealing plate is disposed between the gas permeable plate and the wind chamber for dividing the first chamber, The fan blade is characterized in that the air inlet cavity comprises an air inlet cavity of a second cavity, an air inlet cavity of a third cavity and an air inlet cavity of a fourth cavity, the air cavity is provided with an air outlet, and the fan blade can rotate under the air pressure of the exhaust pipe.

5. The gas purification device for gas power generation according to claim 4, further comprising an air compression chamber, wherein the air compression chamber is disposed around the inside of the air chamber and the air outlet is communicated with the air compression chamber, the air compression chamber is provided with a high pressure air port, and the high pressure air port is provided with an electromagnetic valve.

6. The gas purification apparatus for gas power generation according to claim 5, further comprising a temperature swing adsorption apparatus, wherein the temperature swing adsorption apparatus comprises a temperature swing pipe, a direction change disk, a heat pipe and a cold pipe, the first chamber, the second chamber, the third chamber and the fourth chamber are each provided with a temperature swing pipe inside thereof, a portion of each of the temperature swing pipes is disposed inside the adsorbent, and the temperature swing pipe is provided with an inlet and an outlet; the reversing disc is arranged in a top interlayer of the tower body and is driven to rotate by the rotating shaft, an outer annular pipeline and an inner annular pipeline are arranged in the reversing disc, three cold water pipes are connected below the outer annular pipeline in a through mode, a hot water pipe is connected below the inner annular pipeline in a through mode, water outlets of the hot water pipe and the cold water pipe are arranged at a pipe opening at one end of the temperature changing pipe, notches are arranged above the outer annular pipe and the inner annular pipe and are sealed through the tower body, the heat pipes are communicated with the inner annular pipeline, and the cold pipes are communicated with outer annular management; the other end of the temperature changing pipe is used for draining water.

7. The gas purification device for gas power generation according to claim 6, further comprising a limiting member, wherein the limiting member comprises a telescopic rod and a support frame, the limiting member is disposed inside the wind chamber, a positioning hole is disposed on a rotating shaft disposed inside the wind chamber, a fixed end of the telescopic rod is fixed inside the wind chamber through the support frame, the telescopic rod is disposed vertically with respect to the rotating shaft, a moving end of the telescopic rod is disposed inside the positioning hole after being extended, the positioning hole is circumferentially distributed around the rotating shaft with an axis of the rotating shaft, and the number of the positioning holes is equal to the number of the variable temperature pipes.

8. The gas purification apparatus for gas power generation according to claim 7, wherein the sleeve comprises an inner cylinder and an outer cylinder, the inner cylinder being disposed in the placement groove of the outer cylinder;

the breathable plate is provided with a groove, and a baffle, a spring and a plurality of wedge-shaped abutting parts are arranged in the groove; the spring is arranged between the baffle and the groove, and the wedge-shaped abutting part penetrates through the baffle and extends out of the groove;

a convex ring is arranged on the outer edge of the outer cylinder and used for abutting against the baffle;

the inner cylinder consists of four quarter components, a return spring is arranged between each quarter component and the outer cylinder, and each component of the inner cylinder slides outwards by compressing the return spring;

a limiting clamp is arranged between the inner cylinder and the outer cylinder and used for limiting other multiple degrees of freedom of the inner cylinder relative to the outer cylinder;

the inner cylinder is provided with an internal thread which is meshed with the external thread of the rotating shaft; the upper surface of the inner cylinder is provided with a wedge-shaped groove part used for being matched with the wedge-shaped abutting part, and under the matching of the wedge-shaped abutting part and the wedge-shaped groove part, all components of the inner cylinder are opened outwards.

9. A method of using a gas purification apparatus suitable for use in gas power generation according to claim 8, comprising the steps of:

s1: filling the solid granular molecular sieve into the adsorption layer, and checking the safety availability of the whole pipeline, the air pump and the valve;

s2: conveying gas into the first cavity through the gas inlet cavity of the first cavity, and closing the first switch device and the second switch device in the first cavity;

s3: after the internal pressure reaches a threshold value, opening a second switch device in the first cavity to discharge gas into an air inlet cavity of the fourth cavity through an air pump, after the internal pressure is reduced to a certain threshold value, closing the second switch device, opening the first switch device, conveying waste gas into an air inlet cavity of the second cavity through the air pump, simultaneously closing an air inlet pipe of the first cavity, and enabling the internal cavity to generate negative pressure by using the air pump;

s4: the second chamber discharges gas into the third chamber and the fourth chamber in the same manner as in S3, while the apparatus in the first chamber is restored to the initial state, and the step S3 is repeated again; discharging gas from the third chamber into the fourth chamber in the same manner as in S3, discharging the gas into the air compression chamber through the first exhaust pipe, and repeating S3 again when the first and second chambers are restored to the initial state;

s5: the 4 th cavity repeats the mode of S3 to discharge the required high-purity gas, and the waste gas is discharged into the gas inlet cavity of the first cavity;

s6: after enough waste gas is stored in the air compression cavity, the temperature swing adsorption device is started, the heat pipe is connected with hot water, the cold pipe is connected with cold water, the air outlet quantity of the air compressor is controlled by controlling the electromagnetic valve at the high-pressure air inlet, so that the fan blades are driven to rotate, the reversing disc is driven to rotate by the fan blades, the temperature swing pipes in the first cavity, the second cavity, the third cavity and the fourth cavity are communicated in a staged mode, and the adsorbent can be better desorbed by heating the heat pipe; when pressure rising and adsorption are needed, the cooling pipe is communicated for cooling; the rotation angle of the fan blades is controlled through the limiting piece, so that the rotation angle of the reversing disc is controlled;

s7: the rotation of the rotating shaft is driven by the rotation of the fan blades, the rotating shaft is matched with the inner cylinder to form a screw rod transmission structure, the inner cylinder is used as a sliding part with an outer cylinder to move upwards to extrude a baffle in the ventilating plate, the baffle is used for transmitting force to the ventilating plate through a spring, and the granular adsorbent is extruded through the ventilating plate; when the granular adsorbent is extruded and is not moved, the baffle continues to compress the spring upwards, the wedge-shaped abutting part moves downwards relative to the inner cylinder at the moment, abuts against the wedge-shaped groove part, the inner cylinder is pushed to expand towards the circumference, the internal thread on the inner cylinder is separated from the external thread on the rotating shaft, and the sleeve does not move upwards any more; at the moment, under the action of the spring, the protruding ring is separated from the baffle, the wedge-shaped abutting part is separated from the wedge-shaped groove part, under the action of the reset spring, the inner cylinder is inwards gathered, the rotating shaft is meshed again, the upward movement is continued, the adsorbent is extruded, and when the adsorbent is not extruded, the actions are repeated, so that the adsorbent is extruded in the whole working process.

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