Water removal device used before analysis of natural gas hydrogen production conversion gas

Abstract

The utility model discloses a water removal device before natural gas hydrogen production converted gas analysis, which comprises a circulating water cooler, a gas-liquid separation tank, a cyclone separator and a silica gel column which are connected in sequence, and gas enters an analysis instrument connected with the silica gel column after passing through the devices in sequence; the circulating water cooler is provided with a water inlet and a water outlet, and a converted gas passing pipeline is arranged in the circulating water cooler; the gas-liquid separation tank is provided with a gas inlet and a gas outlet, the gas inlet is connected with the gas-liquid separation tank through a pipeline, and the gas outlet is formed in the top of the gas-liquid separation tank; the cyclone separator is connected with the gas-liquid separation tank through a connecting pipe I, and the silica gel column is connected with the cyclone separator through a connecting pipe II. The device disclosed by the utility model has the beneficial effects that by adopting a mode of combining mechanical dehydration and physical adsorption, water vapor in converted gas is removed, the dew point is reduced, the requirements of an analytical instrument are met, the accuracy of a detection result is ensured, and the service life of the analytical instrument is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas detection technical field, specifically relates to a kind of water removal device before natural gas hydrogen conversion gas analysis. BACKGROUND

[0002] Natural gas hydrogen conversion gas is the mixed gas of methane, water vapor, hydrogen and carbon monoxide, the temperature of sampling point conversion gas is about 300 DEG C, after water cooling to about 30 DEG C, after gas-liquid separation, it is directly into analysis instrument;But conversion gas still contains about 30 DEG C saturated water vapor, and because gas-liquid separation is not thorough, a small amount of free water will be directly entrained, and analysis instrument is damaged.

[0003] In the prior art, a separate gas-liquid separation tank is generally used for separation, and there is still a large amount of water in the gas after gas-liquid separation, which affects the separation effect of the analysis instrument. UTILITY MODEL CONTENT

[0004] To solve the above technical problems, the utility model provides a kind of water removal device before natural gas hydrogen conversion gas analysis, adopts the way of mechanical dehydration and physical adsorption combination, removes the water vapor in conversion gas, and the dew point is converted to-40 DEG C or below, to meet the requirements of analysis instrument.

[0005] Specifically, the utility model discloses a kind of water removal device before natural gas hydrogen conversion gas analysis, comprising: the circulating water cooler, gas-liquid separation tank, cyclone separator and silica gel column are sequentially connected and arranged, gas sequentially passes through above-mentioned device, into the analysis instrument connected with silica gel column;

[0006] The circulating water cooler is provided with water inlet and water outlet, and is provided with conversion gas through pipeline inside;The gas-liquid separation tank is provided with gas inlet and gas outlet, the gas inlet is connected with the through pipeline, and the gas outlet is arranged at the top of the gas-liquid separation tank;The cyclone separator is connected with the gas-liquid separation tank through connecting pipe one, and the silica gel column is connected with the cyclone separator through connecting pipe two.

[0007] The beneficial effects of the above technical solution are that the mechanical dehydration and physical adsorption combination are used to remove the water vapor in the conversion gas, and the dew point of the conversion gas is reduced to-40 DEG C or below, to meet the requirements of analysis instrument, ensure the accuracy of detection results, and prolong the service life of analysis instrument.

[0008] Further, the through pipeline is a spiral pipeline, and the circulating water cooler is filled with cooling water.

[0009] The beneficial effects of the above technical solution are that the spiral pipeline increases the contact area of the conversion gas and the cooling water, and the cooling water is continuously circulated to reduce the temperature of the conversion gas.

[0010] Further, the water inlet and the water outlet are respectively connected with a water inlet pipeline and a water outlet pipeline.

[0011] The beneficial effect of the above technical scheme is that the cooling water after heat exchange with the converted gas flows out, and after cooling, enters the circulating water cooler for continuous cooling, effectively reducing the temperature of the converted gas.

[0012] Further, the gas-liquid separation tank comprises a tank body, a wire mesh is arranged in the tank body, a plurality of water baffle plates are arranged at the lower side of the wire mesh, a water storage groove is arranged at the bottom of the tank body, and a water outlet is arranged at the bottom of the water storage groove.

[0013] The beneficial effect of the above technical scheme is that the water in the converted gas is removed in the gas-liquid separation tank, the converted gas passes through the water baffle plates, the internal water is gathered on the water baffle plates, and the water in the remaining gas condenses when passing through the wire mesh and falls into the water storage groove at the bottom of the tank body and is discharged through the water discharge groove.

[0014] Further, the water baffle plates are alternately arranged at the two sides of the tank body, a plurality of water baffle pieces are arranged at the lower side of the water baffle plates, and water baffle grooves are arranged at the two sides of the water baffle pieces.

[0015] The beneficial effect of the above technical scheme is that the alternately arranged water baffle plates have a water blocking function to separate the water from the gas, the water baffle grooves not only have a flow guiding function but also increase the contact area of the water baffle pieces with the converted gas, and the water is better removed.

[0016] Further, the water baffle pieces are internally provided with condensation pipelines.

[0017] The beneficial effect of the above technical scheme is that the condensation pipelines reduce the temperature of the water baffle pieces, make the water in the converted gas condense, and remove the water vapor in the converted gas.

[0018] Further, the cyclone separator comprises a cylinder body, the cylinder body is divided into a cylindrical segment cylinder body and a conical segment cylinder body, an inlet is arranged at the side of the cylindrical segment cylinder body, a top plate is arranged at the upper side of the cylindrical segment cylinder body, and the top plate is provided with an outlet.

[0019] The beneficial effect of the above technical scheme is that the converted gas enters the cylinder body to form a cyclone, the liquid has a large gravity and flows downward along the inner wall of the cylinder body, the gas flows out through the outlet on the top plate, and the separation of the gas and the liquid is completed.

[0020] Further, the inlet is connected with a spiral air inlet pipeline, and the outlet is connected with an air outlet pipe which extends into the conical segment cylinder body.

[0021] The beneficial effect of the above technical scheme is that the converted gas forms a cyclone inside through the spiral air inlet pipeline to generate a centrifugal force to separate the gas and the liquid.

[0022] Further, the bottom of the cyclone separator is provided with a water outlet pipe, and a valve is arranged on the water outlet pipe.

[0023] The beneficial effects of the above technical scheme are that the liquid separated by the cyclone separator flows out from the bottom water outlet pipe, and the valve can control the water outlet time and water outlet speed.

[0024] Further, the inner wall of the cylinder is provided with a vertically arranged guide groove.

[0025] The beneficial effects of the above technical scheme are that in the cyclone separator, the separated water flows down along the guide groove, reducing the water accumulation on the cylinder wall and ensuring the separation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed in the embodiments or prior art description will be briefly introduced as follows.

[0027] Figure 1 is the overall structure schematic diagram of the water removal device before natural gas hydrogen conversion gas analysis of the present application

[0028] Figure 2 is the structure schematic diagram of the gas-liquid separation tank of the present application

[0029] Figure 3 is the structure schematic diagram of the water baffle of the present application

[0030] Figure 4 is the structure schematic diagram of the cyclone separator of the present application

[0031] The labels involved in the drawings are as follows:

[0032] Circulating water cooler 1, water inlet 11, water inlet pipe 111, water outlet pipe 112, water outlet 12, through pipe 13, gas-liquid separation tank 2, gas inlet 21, gas outlet 22, wire mesh 23, water baffle 24, water storage tank 25, water baffle 26, water baffle tank 27, condensing pipe 28, cyclone separator 3, cylindrical section cylinder 31, conical section cylinder 32, top plate 33, outlet 34, inlet 35, gas outlet pipe 36, water outlet pipe 37, silica gel column 4, analysis instrument 5, connecting pipe one 6, connecting pipe two 7, emptying pipe 8. DETAILED DESCRIPTION

[0033] The present application will be further described in detail below in combination with the drawings.

[0034] For example, Figures 1-4The utility model discloses a kind of water removal devices before natural gas hydrogen conversion gas analysis, comprising: sequentially connected and arranged circulating water cooler 1, gas-liquid separation tank 2, cyclone 3 and silica gel column 4, gas sequentially passes above-mentioned device, into the analyzer 5 connected with silica gel column 4 inside;

[0035] The circulating water cooler 1 is provided with a water inlet 11 and a water outlet 12, and is internally provided with a conversion gas passing pipeline 13; the gas-liquid separation tank 2 is provided with an air inlet 21 and an air outlet 22, the air inlet 21 is connected with the passing pipeline 13, and the air outlet 22 is arranged at the top of the gas-liquid separation tank 2; the cyclone 3 is connected with the gas-liquid separation tank 2 through a connecting pipe one 6, and the silica gel column 4 is connected with the cyclone 3 through a connecting pipe two 7.

[0036] The beneficial effects of the above technical scheme are that the mechanical dehydration and physical adsorption are combined to remove water vapor in the conversion gas, the dew point of the conversion gas is reduced to below -40℃, the requirements of the analyzer 5 are met, the detection result is accurate, and the service life of the analyzer 5 is prolonged.

[0037] In some embodiments, the pipeline 13 is a spiral pipeline, the circulating water cooler 1 is filled with cooling water, the generated conversion gas is introduced into the pipeline 13, and after passing through the spiral pipeline, the conversion gas enters the gas-liquid separation tank 2 for gas-liquid separation. The temperature of the conversion gas is reduced by cooling, and at this time, part of the water vapor may condense. An emptying pipe is arranged at the lowest position of the spiral pipeline, the emptying pipe 8 extends from the bottom of the circulating water cooler 1, and valves one and two are arranged on the emptying pipe 8. During operation, the valve one is opened, and the valve two is closed. The condensed water enters between the valve one and the valve two. The emptying pipe 8 between the valve one and the valve two has a certain storage function. When the condensed water needs to be discharged after a certain period of storage, the valve one is closed, and the valve two is opened. The water discharge operation can be completed without stopping the process.

[0038] The beneficial effects of the above technical scheme are that the spiral pipeline increases the contact area between the conversion gas and the cooling water, and the cooling water is continuously circulated to reduce the temperature of the conversion gas.

[0039] In some embodiments, the water inlet 11 and the water outlet 12 are respectively connected with a water inlet pipeline 111 and a water outlet pipeline 112. The water inlet pipeline 111 and the water outlet pipeline 112 are connected with a circulating water cooling tower. After cooling, the conversion gas enters the circulating water cooler 1 for further cooling, effectively reducing the temperature of the conversion gas.

[0040] In some embodiments, the gas-liquid separation tank 2 comprises a tank body, a wire mesh 23 is arranged in the tank body, a plurality of water baffle plates 24 are arranged at the lower side of the wire mesh 23, a water storage tank 25 is arranged at the bottom of the tank body, a water outlet is arranged at the bottom of the water storage tank 25, the water outlet is provided with a valve, and the gas inlet 21 of the gas-liquid separation tank 2 is arranged at the side of the tank body and located at the lower side of the water baffle plate 24. The wire mesh 23 is a wire mesh demister. When the converted gas passes through the wire mesh demister, the fine liquid droplets entrained in the gas phase are adsorbed onto the wire mesh 23. Through liquid droplet aggregation, large liquid droplets are gradually formed. Under the action of gravity, the large liquid droplets fall to the bottom of the tank body, reduce the water vapor in the converted gas, and fall into the water storage tank 25 at the bottom of the tank body, and are discharged through the water outlet.

[0041] Further, the water baffle plates 24 are alternately arranged at the two sides of the tank body, the water baffle plates 24 are installed on the inner side of the tank body by screws, each water baffle plate 24 is fan-shaped, and the entire water baffle plate 24 is arranged in an inclined manner, so that the water flows to the water storage tank 25 at the bottom of the tank body under the action of gravity. A plurality of water baffle pieces 26 are arranged at the lower side of the water baffle plate 24, water baffle grooves 27 are arranged at the two sides of the water baffle piece 26, the cross-sectional shape of the water baffle piece 26 is also arc-shaped, and the water baffle grooves 27 are symmetrically arranged at the two sides. The depth of the water baffle groove 27 gradually increases from bottom to top.

[0042] The beneficial effects of the above technical scheme are that the alternately arranged water baffle plates 24 play a water blocking function to separate water from gas, the arrangement of the water baffle groove 27 not only plays a flow guiding role, but also increases the contact area of the water baffle piece 26 with the converted gas, so that the water is better removed.

[0043] Further, the water baffle piece 26 is internally provided with a condensation pipeline 28, and the condensation pipeline 28 is arranged in each water baffle piece 26. The condensation pipeline 28 is connected with circulating water, and a plurality of condensation pipelines 28 are converged into one inlet pipe and one outlet pipe outside the tank body, so as to realize circulating heat exchange.

[0044] The beneficial effects of the above technical scheme are that the arrangement of the condensation pipeline 28 reduces the temperature of the water baffle piece 26, so that the water in the converted gas is condensed and the water vapor in the converted gas is removed.

[0045] In some embodiments, the cyclone separator 3 comprises a cylinder body, the cylinder body is divided into a cylindrical section cylinder 31 and a conical section cylinder 32, an inlet 35 is arranged at the side of the cylindrical section cylinder, a top plate 33 is arranged at the upper side of the cylindrical section cylinder 31, the top plate 33 is arranged in a detachable manner and is a whole circular piece, the top plate 33 is provided with an outlet 34, the outlet 34 is arranged at the middle of the top plate 33, a spiral-shaped air inlet pipeline is connected with the inlet 35, the spiral-shaped air inlet pipeline is arranged in the cylindrical section cylinder 31, an air outlet pipe 36 is connected with the outlet 34, the air outlet pipe 36 extends into the conical section cylinder 32, the converted gas enters the cylinder body to form a cyclone, the liquid flows downward along the inner wall of the cylinder body due to gravity, and the gas flows out through the outlet 34 on the top plate 33 through the air outlet pipe 36, so as to complete the separation of the gas and the liquid.

[0046] Further, the bottom of the cyclone separator 3 is provided with a water outlet pipe 37, a valve is arranged on the water outlet pipe 37, the liquid separated by the cyclone separator 3 flows out from the bottom water outlet pipe 37, and the valve can control the water outlet time and the water outlet speed.

[0047] Further, the inner wall of the cylinder is provided with a vertically arranged guide groove, in the cyclone separator 3, the separated water flows down along the guide groove, reduces the water accumulation on the cylinder wall, and ensures the separation efficiency.

[0048] Further, the silica gel column 4 is provided with color-changing silica gel filled therein, the color of the color-changing silica gel changes after water absorption and saturation, the color-changing silica gel can be taken out for drying and regeneration, and is reused, the converted gas outlet from the cyclone separator 3 enters the silica gel column 4, the residual water in the converted gas is adsorbed by the silica gel column 4, the water residual in the converted gas is further reduced, and the dew point is reduced.

[0049] In the use process, the converted gas first enters the circulating water cooler 1, is first cooled, then enters the gas-liquid separation tank 2, is subjected to gas-liquid separation, the cyclone separator 3 (flow rate 0.5-5 L / min) is additionally arranged after the gas-liquid separation tank 2, and a small amount of free water entrained in the converted gas is removed; the silica gel column 4 (φ5*25 cm) is additionally arranged after the cyclone separator 3, the saturated water vapor in the converted gas is further adsorbed, the dew point is reduced to below-40 DEG C, and then the converted gas can enter the analysis instrument 5. The dew point of the converted gas can be reduced to below-40 DEG C, and the converted gas with high water content is avoided from directly entering the analysis instrument 5, so that damage and failure are avoided.

[0050] For ordinary skilled persons in the art, without departing from the creative concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application.

Claims

1. A water removal device before analysis of natural gas conversion gas for hydrogen production, characterized in that: include: A circulating water cooler (1), a gas-liquid separation tank (2), a cyclone separator (3), and a silica gel column (4) are sequentially connected, and the gas passes through the above devices in sequence and enters an analytical instrument (5) connected to the silica gel column (4); The circulating water cooler (1) is provided with a water inlet (11) and a water outlet (12), and a conversion gas passing pipe (13) is provided inside; the gas-liquid separation tank (2) is provided with an air inlet (21) and an air outlet (22), the air inlet (21) is connected to the passing pipe (13), and the air outlet (22) is provided on the top of the gas-liquid separation tank (2); the cyclone separator (3) is connected to the gas-liquid separation tank (2) through a connecting pipe (6), and the silica gel column (4) is connected to the cyclone separator (3) through a connecting pipe (7).

2. The water removal device before analysis of natural gas to hydrogen conversion gas according to claim 1, characterized in that: The through pipe (13) is a spiral pipe, and the circulating water cooler (1) is filled with cooling water.

3. The water removal device before analysis of natural gas to hydrogen conversion gas according to claim 1, characterized in that: The water inlet (11) and the water outlet (12) are respectively connected to a water inlet pipe (111) and a water outlet pipe (112).

4. The water removal device before analysis of natural gas to hydrogen conversion gas according to claim 1, characterized in that: The gas-liquid separation tank (2) comprises a tank body, a wire mesh (23) is provided in the tank body, a plurality of water retaining plates (24) are provided on the lower side of the wire mesh (23), a water storage tank (25) is provided at the bottom of the tank body, and a drainage outlet is provided at the bottom of the water storage tank (25).

5. The water removal device before analysis of natural gas to hydrogen conversion gas according to claim 4, characterized in that: The water baffles (24) are alternately arranged on both sides of the interior of the tank body; a plurality of water baffles (26) are arranged on the lower side of the water baffles (24); and water baffle grooves (27) are arranged on both sides of the water baffles (26).

6. The water removal device before analysis of natural gas to hydrogen conversion gas according to claim 5, characterized in that: A condensation pipe (28) is provided inside the water retaining plate (26).

7. The water removal device before analysis of natural gas conversion gas for hydrogen production according to claim 1, characterized in that: The cyclone separator (3) comprises a cylinder, which is divided into two parts: a cylindrical section cylinder (31) and a conical section cylinder (32). An inlet (35) is provided on the side of the cylindrical section cylinder, a top plate (33) is provided on the upper side of the cylindrical section cylinder (31), and an outlet (34) is provided on the top plate (33).

8. The water removal device before analysis of natural gas conversion gas for hydrogen production according to claim 7, characterized in that: The inlet (35) is connected to a spiral air inlet duct, and the outlet (34) is connected to an air outlet pipe (36), and the air outlet pipe (36) extends into the conical section cylinder (32).

9. The water removal device before analysis of natural gas conversion gas for hydrogen production according to claim 1, characterized in that: A water outlet pipe (37) is provided at the bottom of the cyclone separator (3), and a valve is provided on the water outlet pipe (37).

10. The water removal device before analysis of natural gas conversion gas for hydrogen production according to claim 7, characterized in that: The inner wall of the cylinder is provided with a vertical guide groove.

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