Multi-channel test device for natural gas purification

Abstract

The utility model belongs to the technical field of natural gas purification tests, and particularly relates to a multi-channel type test device for natural gas purification, which comprises a support, and a filter box, a booster pump, a heater, a test assembly and a cooler are arranged on the support. The inlet end of the booster pump is provided with a booster inlet pipe which is communicated and connected with the interior of the filter box, the outlet end of the booster pump is provided with a distribution pipe, the distribution pipe is provided with a plurality of heating pipes, the heating pipes are arranged in the heater, and the heating pipes are respectively communicated with an air inlet pipe. According to the utility model, through the booster pump, the heater, the test assembly and the cooler, natural gas can be filtered to remove impurities and moisture through the filter box, then preheated through the heater and conveyed into each tower in the test assembly to be tested, and multi-group test treatment is carried out on the natural gas; therefore, test comparison of a natural gas purification process is facilitated, and the effects of operation parameter comparison and process optimization are achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to natural gas purification test technical field, and specifically relates to a kind of multi-pass test device for natural gas purification. BACKGROUND

[0002] In the field of natural gas purification, there are many processes such as adsorption method, absorption method, membrane separation method and low-temperature separation method. Through the multi-pass test device, multiple purification processes can be tested simultaneously under the same inlet gas conditions (such as the same natural gas composition, pressure, flow rate, etc.). For example, in a five-way test device, one way uses adsorption method to remove carbon dioxide and water in natural gas with a specific adsorbent; another way uses absorption method to remove acid gases with an alcohol amine absorbent; and another way uses membrane separation method to purify natural gas. By comparing the natural gas purity and impurity removal rate of each outlet, the differences in purification effect of different processes can be observed directly.

[0003] The performance of different processes under different operating parameters can be further studied. Taking the absorption method as an example, by changing the concentration of the absorbent, the absorption temperature, the pressure of the absorption tower, and other parameters, tests can be conducted in different channels to observe the effects of these parameter changes on the natural gas purification effect and to find the best combination of operating parameters, thereby optimizing the process. Therefore, the utility model provides a multi-pass test device for natural gas purification. UTILITY MODEL CONTENT

[0004] The utility model aims to provide a multi-pass test device for natural gas purification, which can solve the above technical problems.

[0005] The technical solution adopted by the utility model is as follows:

[0006] The utility model provides a multi-pass test device for natural gas purification, which comprises a support, a filter box, a booster pump, a heater, a test assembly and a cooler are arranged on the support;

[0007] The booster pump inlet end is provided with a booster inlet pipe connected with the filter box interior, the booster pump outlet end is provided with a distribution pipe, the distribution pipe is provided with a plurality of heating pipes, the plurality of heating pipes are arranged in the heater, and the plurality of heating pipes are respectively provided with an air inlet pipe;

[0008] The test assembly includes a temperature swing adsorption tower, a pressure swing adsorption tower, an absorption tower, a regeneration tower and a membrane separation tower, a plurality of the gas inlet pipes are respectively connected with the upper inlet ends of the temperature swing adsorption tower, the pressure swing adsorption tower, the absorption tower, the regeneration tower and the membrane separation tower, the top outlet ends of the temperature swing adsorption tower, the pressure swing adsorption tower, the absorption tower, the regeneration tower and the membrane separation tower are provided with output pipes, the cooler is provided with a plurality of cooling pipes, and the plurality of output pipes are respectively connected with the plurality of cooling pipes through flange bolts.

[0009] The natural gas enters the filter box through the input pipe, so that the natural gas passes through the impurity filter membrane and the moisture filter membrane to remove impurities and moisture, and then is delivered to the distribution pipe through the booster pump, so that the distribution pipe delivers the natural gas to the plurality of heating pipes, the corresponding ball valve on the heating pipe is opened for heating treatment, the ball valve on the bypass pipe is closed at the same time, the natural gas passes through the heater for heating treatment, the heated natural gas is delivered to the temperature swing adsorption tower for adsorption treatment, and the other bypass pipes deliver the natural gas to the pressure swing adsorption tower, the absorption tower, the regeneration tower and the membrane separation tower for treatment, and the pressure regulating valve on the gas inlet pipe can regulate the pressure of the natural gas delivered by the gas inlet pipe, so that the corresponding pressure regulation of the temperature swing adsorption tower, the pressure swing adsorption tower, the absorption tower, the regeneration tower and the membrane separation tower can be coped with, thereby improving the test effect of the device.

[0010] Preferably, the gas inlet pipe is connected with the heating pipe, the pressure regulating valve is arranged on one side of the outlet end of the heater on the gas inlet pipe, the bypass pipe is arranged between the pressure regulating valve and the heater on the heating pipe, the ball valves are arranged on the bypass pipe and the heating pipe, and the ball valve on the heating pipe is arranged on one side of the interface between the bypass pipe and the heating pipe close to the heater.

[0011] Preferably, the bottom surface of the absorption tower is provided with a circulating pump, and the outlet end of the circulating pump is provided with a return pipe connected with the inlet end of the regeneration tower.

[0012] Preferably, the filter box is provided with an impurity filter membrane and a moisture filter membrane, the booster inlet pipe corresponds to the moisture filter membrane, one side of the filter box is provided with an input pipe communicating with the inside, the input pipe corresponds to the impurity filter membrane, and the filter box is detachably provided with a sealing cover.

[0013] Preferably, the bottom surfaces of the heater and the cooler are provided with water inlet pipes communicating with the inside, and the side surfaces of the heater and the cooler are provided with water outlet pipes communicating with the inside.

[0014] The beneficial effects are:

[0015] 1. The utility model discloses a booster pump, heater, test assembly and cooler can heat before natural gas test, thereby being convenient for responding to the temperature requirement of each tower in test assembly, and the natural gas that passes through each tower output of test assembly carries out cooling processing, so can make the device can carry out multiple test processing to natural gas, thereby being convenient for responding to the test comparison of natural gas purification process, realizes the effect of operation parameter comparison and process optimization.

[0016] 2. The utility model discloses through the impurity filter membrane and moisture filter membrane in filter box, can be convenient for filtering and removing the impurity and removing moisture to the natural gas that carries out test, thereby reducing the natural gas expansion effect after heater, also being convenient for responding to the cleanliness when absorbing and adsorbing operation, improve test effect. DRAWINGS

[0017] Fig. 1 It is the front view structure schematic diagram of the utility model discloses a kind of natural gas purification and uses multiple passage type test device, including support 1, support 1 is provided with filter box 2, booster pump 3, heater 5, test assembly 11 and cooler 13;

[0018] Fig. 2 It is another side structure schematic diagram of the utility model discloses a kind of natural gas purification and uses multiple passage type test device, including support 1, support 1 is provided with filter box 2, booster pump 3, heater 5, test assembly 11 and cooler 13;

[0019] Fig. 3 It is another side structure schematic diagram of the utility model discloses a kind of natural gas purification and uses multiple passage type test device, including support 1, support 1 is provided with filter box 2, booster pump 3, heater 5, test assembly 11 and cooler 13.

[0020] In the drawings, the component list represented by each mark is as follows:

[0021] 1, support;2, filter box;21, impurity filter membrane;22, moisture filter membrane;23, sealing cover;24, input pipe;25, booster inlet pipe;3, booster pump;4, distribution pipe;5, heater;6, heating pipe;7, bypass pipe;8, ball valve;9, pressure regulating valve;10, inlet pipe;11, test assembly;11a, temperature swing adsorption tower;11b, pressure swing adsorption tower;11c, absorption tower;11d, regeneration tower;11e, membrane separation tower;12, output pipe;13, cooler;14, cooling pipe;15, circulating pump. DETAILED DESCRIPTION

[0022] In order to make the purpose and the advantage of the utility model more clearly, the following specific description is made to the utility model with examples. It should be understood that the following text is only used to describe one or several specific embodiments of the utility model, and does not strictly limit the protection scope of the utility model.

[0023] As Figs. 1-3 Shown, a kind of natural gas purification and uses multiple passage type test device, including support 1, support 1 is provided with filter box 2, booster pump 3, heater 5, test assembly 11 and cooler 13;

[0024] The inlet end of the booster pump 3 is provided with a booster inlet pipe 25 connected with the inside of the filter box 2, the outlet end of the booster pump 3 is provided with a distribution pipe 4, a plurality of heating pipes 6 are arranged on the distribution pipe 4, the distribution pipe 4 is provided with a gas detection device, the plurality of heating pipes 6 are arranged in the heater 5, and the plurality of heating pipes 6 are respectively connected with the inlet end of the gas inlet pipe 10.

[0025] The test assembly 11 includes a temperature swing adsorption tower 11a, a pressure swing adsorption tower 11b, an absorption tower 11c, a regeneration tower 11d and a membrane separation tower 11e, a plurality of gas inlet pipes 10 are respectively connected with the inlet end of the temperature swing adsorption tower 11a, the pressure swing adsorption tower 11b, the absorption tower 11c, the regeneration tower 11d and the membrane separation tower 11e, the top outlet end of the temperature swing adsorption tower 11a, the pressure swing adsorption tower 11b, the absorption tower 11c, the regeneration tower 11d and the membrane separation tower 11e is provided with an output pipe 12, a plurality of cooling pipes 14 are arranged on the cooler 13, the plurality of output pipes 12 are respectively connected with the plurality of cooling pipes 14 through flange bolts, the inside of the temperature swing adsorption tower 11a and the pressure swing adsorption tower 11b is provided with activated carbon, molecular sieve or clothes material, the inside of the absorption tower 11c and the regeneration tower 11d is provided with filler, the filler adopts Rasching ring, Pall ring ladder ring or other filler, and the membrane in the membrane separation tower 11e adopts high polymer and has the characteristic of selective permeation.

[0026] As an optional embodiment, the gas inlet pipe 10 is connected with the heating pipe 6, the gas inlet pipe 10 is provided with a flow meter and a pressure gauge, the gas inlet pipe 10 is provided with a pressure regulating valve 9 on the side of the outlet end of the heater 5, the bypass pipe 7 is arranged on the heating pipe 6 between the pressure regulating valve 9 and the heater 5, the ball valve 8 is arranged on the bypass pipe 7 and the heating pipe 6, the ball valve 8 on the heating pipe 6 is arranged on the side close to the heater 5 at the interface between the bypass pipe 7 and the heating pipe 6, so that the heating pipe 6 can be connected with the corresponding gas inlet pipe 10 through the control of the ball valve 8, and the bypass pipe 7 can be directly used for transportation, so as to facilitate the temperature requirements of each tower in the corresponding test assembly 11.

[0027] Referring to the drawings Fig. 2 and the drawings Fig. 3 The bottom surface of the absorption tower 11c is provided with a circulating pump 15, and the outlet end of the circulating pump 15 is provided with a backflow pipe connected with the inlet end of the regeneration tower 11d, so as to facilitate the corresponding reaction operation of the liquid input into the regeneration tower 11d for the absorption of natural gas in the absorption tower 11c.

[0028] Further, the filter box 2 is provided with an impurity filter membrane 21 and a moisture filter membrane 22, the impurity filter membrane 21 adopts a hollow fiber gas separation membrane, the moisture filter membrane 22 adopts a polytetrafluoroethylene filter membrane, the booster inlet pipe 25 corresponds to the moisture filter membrane 22, one side of the filter box 2 is provided with an input pipe 24 communicating with the inside, the input pipe 24 corresponds to the impurity filter membrane 21, and the filter box 2 is detachably provided with a sealing cover 23, so that the impurity filter membrane 21 and the moisture filter membrane 22 in the filter box 2 can be taken out and replaced by detaching the sealing cover 23.

[0029] Further, the bottom surfaces of the heater 5 and the cooler 13 are provided with water inlet pipes communicating with the inside, the upper sides of the side surfaces of the heater 5 and the cooler 13 are provided with water outlet pipes communicating with the inside, the heater 5 and the cooler 13 adopt hollow cavity structures, so that the heating pipe 6 and the cooling pipe 14 can penetrate the inside of the heater 5 or the cooler 13, and the heating water or the cooling water conveyed in the heater 5 and the cooler 13 can be heat-exchanged through the wall, so as to ensure that the heating temperature and the cooling temperature of the natural gas are in a certain range, thereby improving the control effect of heating the natural gas.

[0030] With the above structure, the natural gas enters the filter box 2 through the input pipe 24, so that the natural gas is removed of impurities and moisture through the impurity filter membrane 21 and the moisture filter membrane 22, and then is conveyed to the distribution pipe 4 through the booster pump 3, so that the distribution pipe 4 conveys the natural gas to the plurality of heating pipes 6, the ball valve 8 corresponding to the heating pipe 6 that needs to be heated is opened, and the ball valve 8 on the bypass pipe 7 is closed, so that the natural gas is heated through the heater 5, the heated natural gas is conveyed to the temperature swing adsorption tower 11a for adsorption treatment, and the other bypass pipes 7 convey the natural gas to the pressure swing adsorption tower 11b, the absorption tower 11c, the regeneration tower 11d and the membrane separation tower 11e for treatment, and the pressure regulating valve 9 on the gas inlet pipe 10 can regulate the pressure of the natural gas conveyed by the gas inlet pipe 10, so as to facilitate corresponding pressure regulation of the temperature swing adsorption tower 11a, the pressure swing adsorption tower 11b, the absorption tower 11c, the regeneration tower 11d and the membrane separation tower 11e, thereby improving the test effect of the device.

[0031] The above only describes preferred embodiments of the present application, and it should be noted that, for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered within the protection scope of the present application. The structures, devices and operation methods not specifically described and explained in the present application are implemented according to conventional means in the art, unless otherwise specified and limited.

Claims

1. A multi-pass test unit for natural gas purification, characterized by: The application relates to a filter device for water purification, which comprises a support (1) provided with a filter box (2), a booster pump (3), a heater (5), a test assembly (11) and a cooler (13); The booster pump (3) is provided with a booster inlet pipe (25) connected with the inside of the filter box (2) at the inlet end, and the outlet end of the booster pump (3) is provided with a distribution pipe (4) provided with a plurality of heating pipes (6), which are arranged in the heater (5) and are respectively provided with air inlet pipes (10); The test assembly (11) comprises a temperature swing adsorption tower (11a), a pressure swing adsorption tower (11b), an absorption tower (11c), a regeneration tower (11d) and a membrane separation tower (11e), a plurality of the air inlet pipes (10) are respectively connected with the inlet ends of the temperature swing adsorption tower (11a), the pressure swing adsorption tower (11b), the absorption tower (11c), the regeneration tower (11d) and the membrane separation tower (11e), and the top outlet ends of the temperature swing adsorption tower (11a), the pressure swing adsorption tower (11b), the absorption tower (11c), the regeneration tower (11d) and the membrane separation tower (11e) are provided with output pipes (12), and the cooler (13) is provided with a plurality of cooling pipes (14), and the plurality of output pipes (12) are connected with the plurality of cooling pipes (14) through flange bolts.

2. A multi-pass test unit for natural gas purification according to claim 1, characterized in that: The air inlet pipe (10) is connected with the heating pipe (6), the air inlet pipe (10) is provided with a pressure regulating valve (9) at one side of the outlet end of the heater (5), the heating pipe (6) is provided with a bypass pipe (7) between the pressure regulating valve (9) and the heater (5), the bypass pipe (7) and the heating pipe (6) are provided with ball valves (8), and the ball valve (8) of the heating pipe (6) is arranged at the interface between the bypass pipe (7) and the heating pipe (6) and is close to one side of the heater (5).

3. A multi-pass test device for natural gas purification according to claim 2, characterized in that: The bottom surface of the absorption tower (11c) is provided with a circulating pump (15), and the outlet end of the circulating pump (15) is provided with a return pipe connected with the inlet end of the regeneration tower (11d).

4. A multi-pass test device for natural gas purification according to claim 3, characterized in that: The filter box (2) is provided with an impurity filter membrane (21) and a moisture filter membrane (22), the booster inlet pipe (25) corresponds to the moisture filter membrane (22), one side of the filter box (2) is provided with an input pipe (24) communicating with the inside, the input pipe (24) corresponds to the impurity filter membrane (21), and the filter box (2) is detachably provided with a sealing cover (23).

5. A multi-pass test device for natural gas purification according to claim 4, characterized in that: The bottom surfaces of the heater (5) and the cooler (13) are provided with water inlet pipes communicating with the inside, and the side surfaces of the heater (5) and the cooler (13) are provided with water outlet pipes communicating with the inside.

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