Sodium hydrosulfide solution loading system

Abstract

The utility model provides a sodium hydrosulfide solution loading system which comprises a sodium hydrosulfide storage tank and a first pipeline of the sodium hydrosulfide storage tank. An outlet of the sodium hydrosulfide storage tank is connected with an inlet of a first pipeline of the sodium hydrosulfide storage tank, the first pipeline of the sodium hydrosulfide storage tank is connected with an inlet of a first centrifugal pump pipeline, the first centrifugal pump pipeline is sequentially connected with a first centrifugal pump, a first valve set and a fifth valve, and an outlet of the first centrifugal pump pipeline is connected with an inlet of a first main pipeline. A first main pipeline outlet is connected with a first filter pipeline inlet, a first filter is connected to the first filter pipeline, a first filter pipeline outlet is connected with a tank car pipeline inlet, and a tank car pipeline outlet is connected with a tank car inlet; the pump outlet filter can be additionally designed, crystal substances and impurities in a mixed solution are adsorbed on the filter stick during loading, and when the pressure difference is high or the loading speed is low, the filter is switched, and the filter stick is replaced, so that the problem of hydrogen sulfide poisoning caused by operation in a closed space when the tank car is cleaned after the crystal substances are loaded into the tank car is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to chemical technology field, especially a kind of sodium hydrosulfide solution loading system. BACKGROUND

[0002] Petroleum chemical enterprise, the high-concentration hydrogen sulfide gas containing sulfur generated by pre-hydrogenation process is absorbed by lye hydrogen sulfide to produce sodium hydrosulfide solution as by-product, process characteristic gas contains a small amount of CO2, a small amount of sodium carbonate and other deposition crystallization will inevitably occur, crystallization cannot be dissolved, it can be mixed into tank car when loading, precipitate in tank car, cause tank car to be unable to unload and subsequent cleaning problem occurs. CONTENT OF UTILITY MODEL

[0003] In view of above problem, the purpose of the present application is to provide a kind of sodium hydrosulfide solution loading system, make it through design increase pump export filter, crystallization and impurities in mixed solution are adsorbed on filter stick when loading, when pressure difference is high or loading speed is slow, switch filter, replace filter stick, to solve the problem of crystallization poisoning in closed space operation when cleaning tank car after being loaded into tank car.

[0004] To achieve part or all of the above purposes or other purposes, the present application provides the following technical solution: a kind of sodium hydrosulfide solution loading system, including sodium hydrosulfide storage tank and sodium hydrosulfide storage tank No.

[0005] Further, it also includes sodium hydrosulfide storage tank second pipeline and second main pipeline;The first centrifugal pump pipeline outlet is also connected to the inlet of the second pipeline of sodium hydrosulfide storage tank, and the outlet of the second pipeline of sodium hydrosulfide storage tank is connected to the inlet of the sodium hydrosulfide storage tank;The first filter pipeline outlet is also connected to the second main pipeline inlet, and the second main pipeline outlet is connected to the second pipeline of sodium hydrosulfide storage tank.

[0006] Further, the second pipeline of sodium hydrosulfide storage tank is connected to the sixth valve and the seventh valve, the sixth valve is connected to the front of the second main pipeline outlet, and the seventh valve is connected to the back of the second main pipeline outlet.

[0007] Further, the first filter pipeline is connected with a second filter pipeline in parallel; a second filter is connected on the second filter pipeline, and one valve is arranged before and after the second filter.

[0008] Further, the first centrifugal pump pipeline is connected with a second centrifugal pump pipeline in parallel; a second centrifugal pump and a second valve group are sequentially connected on the second centrifugal pump pipeline.

[0009] Further, a first valve, a second valve, a third valve and a fourth valve are sequentially arranged on the sodium hydrosulfide storage tank No. 1 pipeline; the first centrifugal pump pipeline inlet is connected between the second valve and the third valve, and the second centrifugal pump pipeline inlet is connected between the third valve and the fourth valve.

[0010] Further, two valves are connected on the first main pipeline; one valve is connected on the tank car pipeline; and one valve is connected on the sodium hydrosulfide storage tank second pipeline close to the sodium hydrosulfide storage tank inlet.

[0011] Further, a glass fiber winding filter element is arranged in the first filter

[0012] Compared with the prior art, the beneficial effects of the utility model are that: through the design of adding a centrifugal pump outlet filter, when the mixed solution is loaded, the crystalline substances and impurities in the mixed solution are adsorbed on the filter stick, when the pressure difference is high or the loading speed is slow, the filter is switched, and the filter stick is replaced, so that the problem of hydrogen sulfide poisoning in the closed space operation when the crystalline substances are loaded into the tank car and cleaned is solved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structural schematic view of the utility model;

[0014] In the drawing: 1, sodium hydrosulfide storage tank, 2, sodium hydrosulfide storage tank No. 1 pipeline, 3, first centrifugal pump pipeline, 4, sodium hydrosulfide storage tank second pipeline, 5, first centrifugal pump, 6, first valve group, 7, second centrifugal pump pipeline, 8, second centrifugal pump, 9, second valve group, 11, first filter pipeline, 12, first filter, 13, second filter pipeline, 14, second filter, 15, first main pipeline, 16, second main pipeline, 17, tank car pipeline, 18, tank car, 101, first valve, 102, second valve, 103, third valve, 104, fourth valve, 105, fifth valve, 106, sixth valve, 107, seventh valve. DETAILED DESCRIPTION

[0015] In order to make the structure and function of the utility model clearer, the technical scheme in the utility model embodiment will be clearly and completely described below by combining the drawings in the utility model embodiment.

[0016] Referring to the drawings Figure 1 A sodium hydrosulfide solution loading system, comprising a sodium hydrosulfide storage tank 1 and a sodium hydrosulfide storage tank No. 1 pipeline 2; the outlet of the sodium hydrosulfide storage tank 1 is connected to the inlet of the sodium hydrosulfide storage tank No. 1 pipeline 2, a first centrifugal pump pipeline 4 is connected to the inlet of the sodium hydrosulfide storage tank No. 1 pipeline 2, a first centrifugal pump 5, a first valve group 6 and a No. 5 valve 105 are connected to the first centrifugal pump pipeline 4 in sequence, the outlet of the first centrifugal pump pipeline 4 is connected to the inlet of a first main pipeline 15, the outlet of the first main pipeline 15 is connected to the inlet of a first filter pipeline 11, a first filter 12 is connected to the first filter pipeline 11, a valve is arranged before and after the first filter 12, the outlet of the first filter pipeline 11 is connected to the inlet of a tank car pipeline 17, and the outlet of the tank car pipeline 17 is connected to the inlet of a tank car 18; a pipeline is led out at the original loading line, a valve is added at the pump outlet, and two vertical filters are added.

[0017] Further comprising a sodium hydrosulfide storage tank No. 2 pipeline 3 and a second main pipeline 16; the outlet of the first centrifugal pump pipeline 4 is also connected to the inlet of the sodium hydrosulfide storage tank No. 2 pipeline 3, and the outlet of the sodium hydrosulfide storage tank No. 2 pipeline 3 is connected to the inlet of the sodium hydrosulfide storage tank 1; the outlet of the first filter pipeline 11 is also connected to the inlet of the second main pipeline 16, and the outlet of the second main pipeline 16 is connected to the sodium hydrosulfide storage tank No. 2 pipeline 3.

[0018] A No. 6 valve 106 and a No. 7 valve 107 are connected to the sodium hydrosulfide storage tank No. 2 pipeline 3, the No. 6 valve 106 is connected to the front of the outlet of the second main pipeline 16, and the No. 7 valve 107 is connected to the rear of the outlet of the second main pipeline 16.

[0019] A second filter pipeline 13 is connected in parallel to the first filter pipeline 11; a second filter 14 is connected to the second filter pipeline 13, and a valve is arranged before and after the second filter 14; during loading, the filter process is used, one group is used and the other group is standby; when the loading amount is small, the pump outlet pressure rises or the filter pressure difference rises, indicating that the filter is blocked, and switching is performed to the standby group.

[0020] A second centrifugal pump pipeline 7 is also connected to the sodium hydrosulfide storage tank No. 1 pipeline 2, and the second centrifugal pump pipeline 7 is connected in parallel to the first centrifugal pump pipeline 4; a second centrifugal pump 8 and a second valve group 9 are connected to the second centrifugal pump pipeline 7 in sequence.

[0021] A No. 1 valve 101, a No. 2 valve 102, a No. 3 valve 103 and a No. 4 valve 104 are arranged on the sodium hydrosulfide storage tank No. 1 pipeline 2 in sequence; the inlet of the first centrifugal pump pipeline 4 is connected between the No. 2 valve 102 and the No. 3 valve 103, and the inlet of the second centrifugal pump pipeline 7 is connected between the No. 3 valve 103 and the No. 4 valve 104.

[0022] Two valves are connected on the first total pipeline 15; one valve is connected on the tank car pipeline 17; one valve is connected on the second pipeline 3 of the sodium hydrosulfide storage tank 1 near the inlet of the sodium hydrosulfide storage tank 1.

[0023] A glass fiber winding filter element is installed in the first filter 12; the filtering precision of the filter element is 30 μm, and the removal rate of more than 20 μm is 99%; the original operation group replaces the glass fiber filter element, and the replaced one is used as a backup.

[0024] Based on the above technical scheme, the key point of the present application is to completely solve the problem of hydrogen sulfide poisoning in the closed space operation when cleaning the tank car by designing to increase the pump outlet filter, and the crystalline and impurities in the mixed solution are adsorbed on the filter stick during loading, and when the pressure difference is high or the loading speed is slow, the filter is switched, and the filter stick is replaced, thereby solving the problem of hydrogen sulfide poisoning in the closed space operation when cleaning the tank car after the crystalline is loaded into the tank car.

[0025] The above only discloses the preferred embodiments of the present application, and of course cannot limit the scope of the right of the present application, so the equivalent changes made according to the claims of the present application still belong to the scope covered by the present application.

Claims

1. A sodium hydrosulfide solution loading system, characterized in that: It includes a sodium hydrosulfide storage tank (1) and a sodium hydrosulfide storage tank No. 1 pipeline (2); the outlet of the sodium hydrosulfide storage tank (1) is connected to the inlet of the sodium hydrosulfide storage tank No. 1 pipeline (2), the inlet of the first centrifugal pump pipeline (4) is connected to the first centrifugal pump pipeline (4), the first centrifugal pump (5), the first valve group (6) and the fifth valve (105) are connected in sequence to the first centrifugal pump pipeline (4), the outlet of the first centrifugal pump pipeline (4) is connected to the inlet of the first main pipeline (15), the outlet of the first main pipeline (15) is connected to the inlet of the first filter pipeline (11), the first filter pipeline (11) is connected to the first filter (12), a valve is set before and after the first filter (12), the outlet of the first filter pipeline (11) is connected to the inlet of the tank truck pipeline (17), and the outlet of the tank truck pipeline (17) is connected to the inlet of the tank truck (18).

2. The sodium hydrosulfide solution loading system according to claim 1, characterized in that: It also includes a second pipeline (3) and a second main pipeline (16) for the sodium hydrosulfide storage tank; the outlet of the first centrifugal pump pipeline (4) is also connected to the inlet of the second pipeline (3) for the sodium hydrosulfide storage tank, and the outlet of the second pipeline (3) for the sodium hydrosulfide storage tank is connected to the inlet of the sodium hydrosulfide storage tank (1); the outlet of the first filter pipeline (11) is also connected to the inlet of the second main pipeline (16), and the outlet of the second main pipeline (16) is connected to the second pipeline (3) for the sodium hydrosulfide storage tank.

3. The sodium hydrosulfide solution loading system according to claim 2, characterized in that: The second pipeline (3) of the sodium hydrosulfide storage tank is connected to valve No. 6 (106) and valve No. 7 (107). Valve No. 6 (106) is connected to the front of the outlet of the second main pipeline (16), and valve No. 7 (107) is connected to the rear of the outlet of the second main pipeline (16).

4. The sodium hydrosulfide solution loading system according to claim 1, characterized in that: A second filter line (13) is connected in parallel to the first filter line (11); a second filter (14) is connected to the second filter line (13), and a valve is installed before and after the second filter (14).

5. The sodium hydrosulfide solution loading system according to claim 1, characterized in that: The sodium hydrosulfide storage tank No. 1 pipeline (2) is also connected to the inlet of the second centrifugal pump pipeline (7), and the second centrifugal pump pipeline (7) is connected in parallel with the first centrifugal pump pipeline (4); the second centrifugal pump (8) and the second valve group (9) are connected in sequence on the second centrifugal pump pipeline (7).

6. The sodium hydrosulfide solution loading system according to claim 5, characterized in that: The sodium hydrosulfide storage tank No. 1 pipeline (2) is equipped with valve No. 1 (101), valve No. 2 (102), valve No. 3 (103) and valve No. 4 (104) in sequence; the inlet of the first centrifugal pump pipeline (4) is connected between valve No. 2 (102) and valve No. 3 (103), and the inlet of the second centrifugal pump pipeline (7) is connected between valve No. 3 (103) and valve No. 4 (104).

7. A sodium hydrosulfide solution loading system according to claim 2, characterized in that: Two valves are connected to the first main pipeline (15); one valve is connected to the tank truck pipeline (17); and one valve is connected to the second pipeline (3) of the sodium hydrosulfide storage tank near the inlet of the sodium hydrosulfide storage tank (1).

8. The sodium hydrosulfide solution loading system according to claim 1, characterized in that: A glass fiber wound filter element is installed inside the first filter (12).

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