Movable discharged liquid collecting tank for natural gas production field

Abstract

A waste liquid inlet is formed in one end of the top of the collecting tank, the lower portion of the waste liquid inlet is connected with a hose, and the waste liquid inlet is provided with a sealing cover. A gas overflow port is formed in the other end of the collecting tank; a harmless treatment box is arranged at the upper part of the inner cavity of the collecting tank and comprises a box body and a top surface; the top surface of the harmless treatment box is in contact sealing with the wall surface of the inner cavity of the collecting tank and is provided with a plurality of air outlets; a gap is formed between the harmless treatment box body and the wall surface of the inner cavity of the collecting tank; the lower part of the box body is a chemical reaction area, and the adsorption area on the upper part of the box body is a porous adsorption layer; a plurality of air inlet holes are formed in the peripheral surface of the box body. By adopting the device, the residual toxic and harmful accumulated liquid can be subjected to harmless treatment in the operation processes of maintenance, overhaul, replacement and the like of a large number of equipment in a natural gas production field, the residual accumulated liquid is prevented from entering soil and water sources to pollute the environment, and the injury to personnel is reduced.

Description

Technical Field

[0001] The utility model relates to a device for collecting toxic and harmful waste liquid. Background Art

[0002] There are a lot of equipment maintenance, overhaul, replacement and other construction operations at natural gas production sites in my country. Before the construction operations, the residual liquid in the equipment must be cleaned. During these operations, due to the lack of dedicated sewage pipelines, some operators directly discharge the residual liquid to the surrounding areas of the production site, which poses a risk of polluting the land and water sources; some operators use a discharge pipeline to lead the residual liquid into a waste liquid barrel for collection. However, such treatment cannot discharge the residual liquid harmlessly. At the same time, the residual liquid contains toxic and harmful gases such as hydrogen sulfide, which will pollute the atmosphere or cause poisoning of operators.

[0003] In industrial production workplaces, toxic and hazardous waste liquids can be harmlessly treated through dedicated sewage pipelines. However, for places where small amounts of toxic and hazardous waste liquids are generated during operations such as maintenance, overhaul, and replacement, there is an urgent need for a portable, multifunctional, small-scale harmless treatment device. Utility Model Content

[0004] The purpose of this utility model is to solve the problem of difficult effective discharge of residual liquid during equipment inspection, maintenance, equipment replacement and other operations in the natural gas production process, and to design a toxic and harmful liquid collection tank, which is used to recover toxic and harmful liquid from equipment that does not discharge liquid in a standard manner during construction operations. It can achieve harmless treatment of residual liquid, reduce environmental pollution, prevent injuries such as poisoning, and improve production efficiency and green environmental protection production.

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

[0006] A mobile on-site drainage collection tank for natural gas, wherein a waste liquid inlet is arranged at one end of the top of the collection tank, a hose is connected to the lower part of the waste liquid inlet, and a sealing cover is arranged at the waste liquid inlet; a gas overflow port is arranged at the other end of the top of the collection tank; a harmless treatment box is arranged at the upper part of the inner cavity of the collection tank, and the harmless treatment box comprises a box body and a top surface; the top surface of the harmless treatment box is in contact and sealed with the inner cavity wall surface of the collection tank, and a plurality of air outlet holes are opened on the top surface; a gap is formed between the box body of the harmless treatment box and the inner cavity wall surface of the collection tank; the lower part of the box body is a chemical reaction zone, which is equipped with a chemical reactant, and the adsorption zone at the upper part of the box body is a porous adsorption layer; a plurality of air inlet holes are opened on the outer peripheral surface of the box body; the hose passes through the top surface of the harmless treatment box and extends downward to the lower part of the inner cavity of the collection tank.

[0007] The residual liquid collection tank designed by the utility model has a waste liquid inlet at the entrance, which can be sealed by a sealing cover. A hose is connected to the lower part of the waste liquid inlet. After the liquid is collected, the sealing cover and the inlet are screwed tightly to prevent toxic and harmful gases in the liquid from overflowing. The bottom of the collection tank is designed as a liquid storage area. The liquid entering the tank is stored at the bottom of the tank through a hose. Since the lower end of the hose extends into the liquid, it can ensure that the escaped gas flows according to the designed path.

[0008] A harmless treatment component is designed at the top of the collection tank. The toxic and harmful waste gas that escapes from the accumulated liquid at the bottom of the collection tank flows upward, enters the box through the air inlet holes on the outer peripheral surface of the harmless treatment box, and reacts with the liquid chemical reactant. After the reaction, the gas that removes harmful substances such as hydrogen sulfide flows upward in the box and enters the adsorption area at the top. The airflow brings a large amount of liquid chemical reactants into the porous adsorption layer, so that the chemical reactants are fully in contact with the airflow, further enhancing the reaction effect. After the chemical reactants in the adsorption area have finished reacting with the harmful gases, they flow back to the bottom of the box under the action of gravity. The gas of the absorbed harmful substances flows out from the air outlet on the top surface of the harmless treatment box after passing through the adsorption area, continues to flow upward, and is finally discharged harmlessly from the gas overflow port at the top of the collection tank.

[0009] As a further improvement, the air inlet of the harmless treatment box body is an air inlet hole that is inclined downward, which is conducive to the air flow entering from the air inlet hole on the side of the harmless treatment box and turning downward to flow to the chemical reaction area at the bottom of the box body.

[0010] As a further improvement, the adsorption area in the harmless treatment box includes an adsorption box, which is fixedly connected to the top surface of the harmless treatment box, and a plurality of air outlets are provided on the corresponding top surface of the adsorption box; there is a gap between the adsorption box body and the inner wall of the harmless treatment box, a porous adsorption material is placed in the adsorption box, and an air inlet is provided at the bottom of the adsorption box. The design of the above-mentioned adsorption box can not only serve to contain the adsorbent, but the box body can also serve to change the direction of the airflow, so that the airflow enters from the air inlet on the side of the harmless treatment box, turns downward and flows to the chemical reaction area at the bottom of the box body, and after reacting with the liquid chemical reactant, the gas that removes harmful substances such as hydrogen sulfide flows upward in the box, and enters the adsorption area through the air inlet at the bottom of the adsorption box. The airflow brings a large amount of liquid chemical reactant into the porous adsorption material, so that the chemical reactant is fully in contact with the airflow, further enhancing the reaction effect. After the chemical reactants in the adsorption area have finished reacting with the harmful gases, they flow back to the lower part of the harmless treatment box under the action of gravity. The gases containing the absorbed harmful substances flow out from the vents on the top surface of the harmless treatment box through the adsorption box, continue to flow upward, and are finally discharged harmlessly from the gas overflow port on the top of the collection tank.

[0011] A further improvement is that the porous adsorption material is porous activated carbon or porous ceramic.

[0012] As a further improvement, the hose is a variable diameter hose with a larger upper portion and a smaller lower portion, and can be non-selectively sealed with various types of drainage pipelines to achieve closed collection of residual liquid.

[0013] As a further improvement, a liquid discharge valve is provided at the lower part of the collection tank, and the liquid discharge valve is connected to the lower part of the inner cavity of the collection tank. By opening the control valve, the accumulated liquid in the collection tank can be discharged harmlessly, and the accumulated liquid can be recovered into the sewage pool for treatment.

[0014] As a further improvement, a drainage pipe is arranged at the lower part of the inner cavity of the collecting tank, and the liquid discharge valve is connected to the drainage pipe. A drainage pipe is designed in the accumulated liquid storage area to facilitate the smooth discharge of the accumulated liquid at the bottom.

[0015] As a further improvement, a handle is provided on the top of the collection tank, making the collection tank more portable and convenient for transport and handling.

[0016] The present invention has the following beneficial effects:

[0017] (1) During the maintenance, overhaul, and replacement of a large number of equipment at the natural gas production site, residual toxic and harmful accumulated liquids are treated harmlessly to prevent the residual accumulated liquids from entering the soil and water sources to pollute the environment and reduce harm to personnel.

[0018] (2) It can react chemically with the toxic gas in the residual liquid to prevent the toxic gas from overflowing into the atmosphere. At the same time, it can prevent the toxic gas from causing poisoning and other injuries to the operators.

[0019] (3) It is small and portable, has low manufacturing cost, and does not require installation and laying of discharge pipelines, which can save a lot of investment.

[0020] (4) Simple operation and easy use. Small workload and no impact on normal operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a perspective view of a collecting tank according to an embodiment of the present application.

[0022] Figure 2 for Figure 1 Schematic diagram of the external structure of the harmless treatment box.

[0023] Figure 3 yes Figure 2 Schematic diagram of the internal structure.

[0024] The reference numerals involved in the accompanying drawings are:

[0025] 1. Gas overflow port; 2. Air outlet; 3. First air inlet; 4. Harmless treatment box; 5. Liquid discharge valve; 6. Sealing cover; 7. Variable diameter hose; 8. Adsorption box; 9. Chemical reaction area; 10. Handle; 11. Porous adsorption material; 12. Top surface. DETAILED DESCRIPTION

[0026] The utility model is further described below:

[0027] The specific structure of the utility model is shown in Figure 1-Figure 3 .

[0028] A mobile drainage collection tank for natural gas on-site has a waste liquid inlet at one end of the top of the collection tank, a reducer hose 7 with a larger upper diameter and a smaller lower diameter is connected to the lower part of the waste liquid inlet, and a sealing cover 6 is provided for the waste liquid inlet; a gas overflow port 1 is provided at the other end of the top of the collection tank; and a handle 10 is also provided at the top of the collection tank. A harmless treatment box 4 is arranged at the upper part of the inner cavity of the collection tank, and the harmless treatment box 4 includes a box body and a top surface 12; the top surface 12 of the harmless treatment box 4 is in contact and sealed with the inner cavity wall of the collection tank; there is a gap between the box body of the harmless treatment box 4 and the inner cavity wall of the collection tank, and a plurality of first air inlet holes 3 are opened on the outer peripheral surface of the box body; the lower part of the box body is a chemical reaction zone 9, which is filled with chemical reactants; the upper part of the box body is an adsorption zone, including an adsorption box 8, which is fixedly connected to the top surface 12 of the harmless treatment box 4, and a plurality of air outlet holes 2 are opened on the top surface 12 corresponding to the adsorption box 8; there is a gap between the box body of the adsorption box 8 and the inner wall of the harmless treatment box 4, a porous adsorption material 11 is placed in the adsorption box 8, and a plurality of second air inlet holes are opened at the lower part of the inner cavity of the collection tank; a hose passes through the top surface 12 of the harmless treatment box 4 and extends downward to the lower part of the inner cavity of the collection tank. A liquid discharge valve 5 is arranged at the lower part of the collection tank, and the liquid discharge valve 5 is connected to the lower part of the inner cavity of the collection tank.

[0029] The utility model is a residual liquid collection tank designed for the situation where there is less residual liquid during equipment overhaul, maintenance or replacement, and harmlessly recovers toxic and harmful accumulated liquid. The residual liquid collection tank adopts the design of liquid accumulation area and absorption purification area, and stores the collected residual liquid at the bottom of the tank, while the toxic and harmful gas overflowing from the liquid rises to the harmless treatment device and absorption device arranged on the upper part of the tank body, and forms a gas purification channel by reacting with the chemical reactant in the device and a porous adsorption layer with tiny pores and filled with liquid chemical reactant. The toxic and harmful substances in the gas are fully in contact with the liquid agent and produce a chemical reaction, thereby removing the toxic substances in the gas.

[0030] The utility model is compact and portable, easy to use, and convenient to carry and transfer. When collecting residual liquid, it can be non-selectively sealed with various types of drainage pipelines. The gas released from the toxic and harmful accumulated liquid collected in the tank is treated by the harmless treatment box arranged in the tank and then discharged harmlessly. The small amount of accumulated liquid remaining in the tank is sealed and stored. After accumulating to a certain amount, the accumulated liquid can be collected and recovered into the sewage pool for treatment through the discharge valve, thereby realizing the harmless discharge of the accumulated liquid in the collection tank.

[0031] The chemical reagents that have been ineffective after a period of reaction in the harmless treatment box can be discharged from the gas overflow port and the gas outlet of the collection tank for regeneration. At the same time, new chemical reagents are added to the harmless treatment box for standby use.

[0032] The above description is only used to explain the present invention and is not used to limit the present invention. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A mobile drainage collection tank for natural gas production site, characterized in that: A waste liquid inlet is arranged at one end of the top of the collecting tank, a hose is connected to the lower part of the waste liquid inlet, and a sealing cover is arranged at the waste liquid inlet; a gas overflow port is arranged at the other end of the top of the collecting tank; a harmless treatment box is arranged at the upper part of the inner cavity of the collecting tank, and the harmless treatment box includes a box body and a top surface; the top surface of the harmless treatment box is in contact and sealed with the wall surface of the inner cavity of the collecting tank, and a plurality of air outlet holes are opened on the top surface; there is a gap between the box body of the harmless treatment box and the wall surface of the inner cavity of the collecting tank; the lower part of the box body is a chemical reaction zone, which is loaded with chemical reactants, and the adsorption zone on the upper part of the box body is a porous adsorption layer; a plurality of air inlet holes are opened on the outer peripheral surface of the box body; the hose passes through the top surface of the harmless treatment box and extends downward to the lower part of the inner cavity of the collecting tank.

2. The mobile drainage collection tank for natural gas production site according to claim 1 is characterized in that: The air inlet of the harmless treatment box body is an air inlet hole that is inclined downward.

3. The mobile drainage collection tank for natural gas production site according to claim 1 is characterized in that: The adsorption area in the harmless treatment box includes an adsorption box, which is fixedly connected to the top surface of the harmless treatment box, and a plurality of air outlet holes are opened on the top surface corresponding to the adsorption box; There is a gap between the adsorption box body and the inner wall of the harmless treatment box, porous adsorption material is placed in the adsorption box, and an air inlet hole is opened at the bottom of the adsorption box.

4. The mobile drainage collection tank for natural gas production site according to claim 3 is characterized in that: The porous adsorption material is porous activated carbon or porous ceramics.

5. The mobile drainage collection tank for natural gas production site according to claim 1 is characterized in that: The hose is a variable diameter hose that is larger at the top and smaller at the bottom.

6. The mobile drainage collection tank for natural gas production site according to claim 1 is characterized in that: A liquid discharge valve is arranged at the lower part of the collecting tank, and the liquid discharge valve is connected to the lower part of the inner cavity of the collecting tank.

7. The mobile drainage collection tank for natural gas production site according to claim 1 is characterized in that: A sewage pipe is arranged at the lower part of the inner cavity of the collecting tank, and the liquid discharge valve is connected to the sewage pipe.

8. The mobile drainage collection tank for natural gas production site according to claim 1 is characterized in that: Provide a handle on the top of the collection tank.

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