Cross pollution prevention water seal device for waste gas absorption pipeline of cobalt sulfate workshop

Abstract

The utility model relates to an anti-cross-pollution water seal device for a waste gas absorption pipeline of a cobalt sulfate workshop, and belongs to the technical field of waste gas treatment. The device mainly comprises an exhaust tank C1, an air suction tank C2, a liquid accumulation tank C3, an atmosphere air inlet pipe, a three-way communicating pipe, an air outlet pipe, a first conveying hose, a second conveying hose and a glass tube liquid level meter, water is added into a C1 exhaust tank, a C2 suction tank and a C3 liquid accumulation tank, when the pressure in the hydrochloric acid storage tank is positive, waste gas in the tank crosses the C2 suction tank and enters a C1 exhaust tank water seal to complete the exhaust process, exhausted tail gas normally enters a tail gas treatment system, and when the pressure in the hydrochloric acid storage tank is negative, the waste gas in the tank and external air enter the C2 suction tank water seal to complete the exhaust process. And the hydrogen chloride waste gas is dissolved in the C2 suction tank, so that the hydrogen chloride waste gas and the sulfuric acid mist waste gas can be effectively prevented from cross blow-by in the pipeline, and the mutual pollution of respective original waste gas source storage tanks is avoided, thereby ensuring the quality of the sulfuric acid solution and the hydrochloric acid solution.

Description

TECHNICAL FIELD

[0001] The utility model belongs to waste gas treatment technical field, more particularly to a kind of sulphate of cobalt workshop waste gas absorption pipeline prevents cross contamination water seal device. BACKGROUND

[0002] In sulphate of cobalt workshop, hydrochloric acid and sulfuric acid are used as production accessories, and hydrogen chloride waste gas and sulfuric acid mist waste gas are generated in corresponding hydrochloric acid and sulfuric acid storage tank equipment. These waste gases need to be treated by sodium hydroxide liquid spray tower to meet the emission standard, and the hydrogen chloride waste gas pipeline and the sulfuric acid mist waste gas pipeline will be combined into the tail gas absorption system. If there is a non-planned production suspension, sudden power failure or other situations, it will cause cross contamination of hydrogen chloride waste gas and sulfuric acid mist waste gas in their respective pipelines, mutual pollution of their original waste gas source storage tanks, and quality accidents of sulfuric acid solution storage tank containing hydrogen chloride and hydrochloric acid solution storage tank containing sulfuric acid. Therefore, it is necessary to take measures to prevent cross contamination of hydrogen chloride waste gas pipeline and sulfuric acid mist waste gas pipeline in sulphate of cobalt production workshop. SUMMARY

[0003] To overcome the problem of cross contamination of hydrogen chloride waste gas and sulfuric acid mist waste gas in their respective pipelines, mutual pollution of their original waste gas source storage tanks, and quality accidents of sulfuric acid solution storage tank containing hydrogen chloride and hydrochloric acid solution storage tank containing sulfuric acid, the utility model provides a sulphate of cobalt workshop waste gas absorption pipeline cross contamination prevention water seal device. Water is added to C1 exhaust tank, C2 suction tank and C3 liquid accumulation tank. When the hydrochloric acid storage tank is under positive pressure, the waste gas in the tank passes through C2 suction tank and enters C1 exhaust tank water seal, completing the exhaust process. The exhaust tail gas enters the tail gas treatment system normally. When the hydrochloric acid storage tank is under negative pressure, the waste gas in the tank and external air enter C2 suction tank water seal and complete the suction process in C2 suction tank. Hydrogen chloride waste gas is dissolved in C2 suction tank, which can effectively prevent cross contamination of hydrogen chloride waste gas and sulfuric acid mist waste gas in the pipeline, avoid mutual pollution of their original waste gas source storage tanks, and ensure the quality of sulfuric acid solution and hydrochloric acid solution.

[0004] In order to achieve the above object, the utility model is through the following technical scheme realizes: a kind of waste gas absorption pipeline cross-contamination prevention water seal device of cobalt sulfate workshop, it mainly includes C1 exhaust tank, C2 suction tank, C3 liquid accumulator, atmospheric air inlet pipe, three-way communication pipe, air outlet pipe, first conveying hose, second conveying hose, glass tube liquid level meter, the side of C1 exhaust tank, C2 suction tank is all provided with V1 water inlet valve, V2 water outlet valve, V3 emptying valve, atmospheric air inlet pipe is installed at C2 suction tank top end, three-way communication pipe bottom end is connected with C1 exhaust tank, C2 suction tank, top end is connected with hydrochloric acid solution storage tank, air outlet pipe is installed at C1 exhaust tank top end, C3 liquid accumulator top end is provided with V7 liquid inlet valve, V8 breather valve, first conveying hose one end is connected on the V2 water outlet valve of C1 exhaust tank, other end is connected on the V7 liquid inlet valve of C3 liquid accumulator, C1 exhaust tank is connected with C3 liquid accumulator, second conveying hose one end is connected on the V2 water outlet valve of C2 suction tank, other end is connected on the V7 liquid inlet valve of C3 liquid accumulator, C2 suction tank is connected with C3 liquid accumulator, C3 liquid accumulator side is provided with V4 liquid level meter valve, V5 overflow valve, V6 liquid outlet valve, glass tube liquid level meter is installed on two V4 liquid level meter valves, pressure gauge PG1, pressure gauge PG2, pressure gauge PG3 are respectively arranged on C1 exhaust tank, C2 suction tank, C3 liquid accumulator upper portion.

[0005] The pressure gauge PG1, the pressure gauge PG2 and the pressure gauge PG3 are diaphragm type corrosion-resistant pressure gauges, the range of the diaphragm type corrosion-resistant pressure gauges is -10kPa~+10kPa, the accuracy level is 0.5 level, and the dial diameter is 100mm.

[0006] The bottom end of the three-way communication pipe is connected with the C1 exhaust tank and the C2 suction tank through flange quick-release joints respectively, the bottom end of the atmospheric air inlet pipe and the air outlet pipe is connected with the C2 suction tank and the C1 exhaust tank through flange quick-release joints respectively.

[0007] The utility model has the advantages of the following:

[0008] V1 water inlet valve is opened, V3 emptying valve is closed, and a certain amount of pure water is added in the C1 exhaust tank, the C2 suction tank and the C3 liquid accumulator to reach the set liquid level, the continuous operation of the acid mist absorption treatment system is realized through the "siphon" principle of liquid and gas, when the treated hydrochloric acid storage tank is under positive pressure, the waste gas in the tank passes through the C2 suction tank and enters the water seal of the C1 exhaust tank, enters the tail gas treatment system and completes the exhaust process, the discharged tail gas normally enters the tail gas treatment system, when the treated hydrochloric acid storage tank is under negative pressure, the waste gas in the tank and the external air enter the water seal of the C2 suction tank, complete the suction process in the C2 suction tank, the hydrogen chloride waste gas is dissolved in the C2 suction tank, the cross leakage of hydrogen chloride waste gas and sulfuric acid mist waste gas in the pipeline is effectively prevented, the mutual pollution of the original waste gas source storage tanks is avoided, and therefore the quality of the sulfuric acid solution and the hydrochloric acid solution is ensured. ACCURACY

[0009] Figure 1 is the working state schematic diagram of the utility model.

[0010] Figure 2 is C1 exhaust tank plan.

[0011] Figure 3 is C2 suction tank plan.

[0012] Figure 4 is C3 hydrops tank plan. DETAILED DESCRIPTION

[0013] In order to make the utility model's purpose, technical scheme and beneficial effect more clearly, below will combine with the drawing, to the preferred embodiment of the utility model carries out detailed explanation, to facilitate technical personnel understanding.

[0014] The utility model discloses a kind of cobalt sulfate workshop waste gas absorption pipeline prevents cross-contamination water seal device, the water seal device of a kind of cobalt sulfate workshop waste gas absorption pipeline prevents cross-contamination mainly includes C1 exhaust tank 1, C2 suction tank 2, C3 hydrops tank 3, atmospheric air inlet pipe 4, three-way communication pipe 5, gas outlet pipe 6, first conveying hose 7, second conveying hose 8, glass tube liquid level meter 9, the C1 exhaust tank 1, C2 suction tank 2 side are all provided V1 water inlet valve 11, V2 water outlet valve 12, V3 emptying valve 13, atmospheric air inlet pipe 4 is installed at C2 suction tank 2 top, three-way communication pipe 5 bottom and C1 exhaust tank 1, C2 suction tank 2 are communicated, top and hydrochloric acid solution storage tank are connected, gas outlet pipe 6 is installed at C1 exhaust tank 1 top, C3 hydrops tank 3 top is provided with V7 liquid inlet valve 31, V8 breather valve 32, first conveying hose 7 one end is connected in V2 water outlet valve 12 of C1 exhaust tank 1, other end is connected in V7 liquid inlet valve 31 of C3 hydrops tank 3, C1 exhaust tank 1 and C3 hydrops tank 3 are communicated, second conveying hose 8 one end is connected in V2 water outlet valve 12 of C2 suction tank 2, other end is connected in V7 liquid inlet valve 31 of C3 hydrops tank 3, C2 suction tank 2 and C3 hydrops tank 3 are communicated, C3 hydrops tank 3 side is provided with V4 liquid level meter valve 33, V5 overflow valve 34, V6 liquid outlet valve 35, glass tube liquid level meter 9 is installed on two V4 liquid level meter valve 33, pressure gauge PG1 21, pressure gauge PG2 22, pressure gauge PG3 23 are respectively provided on C1 exhaust tank 1, C2 suction tank 2, C3 hydrops tank 3 upper part.

[0015] The pressure gauge PG1 21, the pressure gauge PG2 22, the pressure gauge PG3 23 are diaphragm type corrosion-resistant pressure gauges, the range is-10kPa~+10kPa, the accuracy level is 0.5 level, and the dial diameter is 100mm.

[0016] The bottom end of the tee pipe 5 is connected with the C1 exhaust tank 1 and the C2 suction tank 2 through flange quick-release joints respectively, and the bottom end of the air inlet pipe 4 and the air outlet pipe 6 is connected with the C2 suction tank 2 and the C1 exhaust tank 1 through flange quick-release joints respectively.

[0017] Working process:

[0018] Open the V1 water inlet valve 11, close the V3 emptying valve 13, add appropriate amount of pure water into the C1 exhaust tank 1, the C2 suction tank 2 and the C3 liquid accumulation tank 3 until reaching the set liquid level, open the tee pipe 5 to make the C1 exhaust tank 1 and the C2 suction tank 2 communicate with the hydrochloric acid solution storage tank, and realize the continuous operation of the acid mist absorption treatment system through the "siphon" principle of liquid and gas.

[0019] When the treated hydrochloric acid storage tank is under positive pressure, the exhaust gas enters the C1 exhaust tank 1 through the tee pipe 5, the acid mist in the exhaust gas is absorbed by water in the C1 exhaust tank 1 through water seal, and the treated exhaust gas is discharged from the air outlet pipe 6 to enter the tail gas treatment system, at the same time, the water in the C2 suction tank 2 forms a water seal to prevent the exhaust gas from directly entering the atmosphere.

[0020] When the treated hydrochloric acid storage tank is under negative pressure, the exhaust gas in the tank enters the water seal of the C2 suction tank 2 together with the outside air due to the negative pressure suction, after entering the C2 suction tank 2, the hydrogen chloride exhaust gas is dissolved in the liquid in the C2 suction tank 2, and the hydrogen chloride exhaust gas is fixed in the liquid environment in the C2 suction tank 2 through the dissolution treatment in the C2 suction tank 2, and will not enter other pipelines that may cause cross contamination.

[0021] When the C1 exhaust tank 1 and the C2 suction tank 2 are working, the V2 water outlet valve 12 should ensure that the water flow continuously flows out to maintain the constant liquid level in the C1 exhaust tank 1 and the C2 suction tank 2, and by keeping the continuous water flow of the V2 water outlet valve 12, the dynamic balance of the liquid and gas in the tank can be ensured, and the continuous and effective "siphon" principle and the normal function of the water seal can be ensured.

[0022] The C3 liquid accumulation tank 3 mainly collects the water from the C1 exhaust tank 1 and the C2 suction tank 3, receives the liquid from the C1 exhaust tank 1 and the C2 liquid accumulation tank 2 through the first delivery hose 7, the second delivery hose 8 and the V7 liquid inlet valve 31, the V8 vent valve 32 keeps the tank pressure balanced with the atmospheric pressure, the glass tube liquid level meter 9 displays the liquid level in real time, the V5 overflow valve 34 prevents the tank from being overloaded due to excessive liquid, the V6 liquid outlet valve 35 periodically discharges the liquid, and the liquid level of the C3 liquid accumulation tank 3 needs to be observed manually, and when the liquid level of the C3 liquid accumulation tank 3 is full, the pump is used to pump out the liquid.

[0023] The liquid levels in the three storage tanks C1 exhaust tank 1, C2 suction tank 2, C3 liquid tank 3 can be adjusted by operating the corresponding V1 water inlet valve 11 (for water replenishment), V2 water outlet valve 12 (control water outlet flow to adjust the liquid level), V3 emptying valve 13 (empty part of the liquid to adjust the liquid level when necessary) according to the pressure of the pressure gauges PG1 21, PG2 22, PG3 23 displayed on the spot. This pressure-based liquid level adjustment mechanism can keep the liquid levels of the three storage tanks within a reasonable working range in a dynamic environment, thereby ensuring the stable operation of the entire waste gas absorption pipeline anti-cross contamination water seal device.

[0024] Finally, it should be pointed out that the above preferred embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined in the claims of the present application.

Claims

1. A water seal device for preventing cross contamination of a plant exhaust absorption line for cobalt sulfate, characterized by: The water seal device for preventing cross contamination of the cobalt sulfate plant exhaust gas absorption pipeline comprises a C1 exhaust tank (1), a C2 air suction tank (2), a C3 liquid accumulation tank (3), an atmospheric air inlet pipe (4), a three-way communication pipe (5), an air outlet pipe (6), a first conveying hose (7), a second conveying hose (8), and a glass tube liquid level meter (9).

2. A cross contamination prevention water seal device for a plant exhaust absorption line for cobalt sulfate as claimed in claim 1, characterized in that: The atmospheric air inlet pipe (4) is installed at the top end of the C2 air suction tank (2), the three-way communication pipe (5) is connected with the C1 exhaust tank (1) and the C2 air suction tank (2) at the bottom end and connected with a hydrochloric acid solution storage tank at the top end, the air outlet pipe (6) is installed at the top end of the C1 exhaust tank (1), the C3 liquid accumulation tank (3) is provided with a V7 liquid inlet valve (31) and a V8 vent valve (32) at the top end, one end of the first conveying hose (7) is connected with the V2 water outlet valve (12) of the C1 exhaust tank (1), the other end is connected with the V7 liquid inlet valve (31) of the C3 liquid accumulation tank (3), and the C1 exhaust tank (1) is communicated with the C3 liquid accumulation tank (3), one end of the second conveying hose (8) is connected with the V2 water outlet valve (12) of the C2 air suction tank (2), the other end is connected with the V7 liquid inlet valve (31) of the C3 liquid accumulation tank (3), and the C2 air suction tank (2) is communicated with the C3 liquid accumulation tank (3), the C3 liquid accumulation tank (3) is provided with a V4 liquid level meter valve (33), a V5 overflow valve (34), and a V6 liquid outlet valve (35) at the side, and the glass tube liquid level meter (9) is installed on the two V4 liquid level meter valves (33).

3. A cross contamination prevention water seal device for a plant exhaust absorption line for cobalt sulfate as claimed in claim 1 or 2, characterized in that: The pressure gauges PG1 (21), PG2 (22) and PG3 (23) are diaphragm type corrosion-resistant pressure gauges, the range is -10kPa~+10kPa, the accuracy level is 0.5 level, and the dial diameter is 100mm. The three-way communication pipe (5) is connected with the C1 exhaust tank (1) and the C2 air suction tank (2) through flange quick-release joints at the bottom end, the atmospheric air inlet pipe (4) and the air outlet pipe (6) are connected with the C2 air suction tank (2) and the C1 exhaust tank (1) through flange quick-release joints at the bottom end.

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