CN202725017U - Waste gas treatment system for rubber factor - Google Patents

Abstract

The utility model provides a waste gas treatment system used in rubber factories. The waste gas treatment system includes a gas collection device and a gas treatment device. The gas treatment device includes a spray oxidation absorption tower, a water replenishment system, and a dispensing system. The gas collection device is connected with the spray oxidation absorption tower, the water replenishment system is used to replenish water to the spray oxidation absorption tower, the dispensing system is used to configure the medicament used in the spray oxidation absorption tower, and the water replenishment system is used to replenish water to the spray oxidation absorption tower. The system is connected with the spray oxidation absorption tower, and the dispensing system is connected with the spray oxidation absorption tower; the automatic control system is used to control the operation of the entire exhaust gas treatment system. The waste gas treatment system of the utility model is low in cost, and the treatment efficiency of the malodorous gas produced by the rubber factory can reach more than 85%, and the system resistance is small, the energy consumption is low, and the treatment efficiency is high, achieving the economic effect of double reduction of investment and operating costs .

Description

Exhaust gas treatment system for rubber factories

technical field

The utility model relates to a waste gas treatment system, in particular to a waste gas treatment system for treating malodorous gas produced in a rubber factory. The system has high treatment efficiency and good treatment effect.

Background technique

The rubber mixing and vulcanization process of the rubber factory emits a large amount of malodorous gas, which pollutes the surrounding environment. More importantly, the stench emitted gives people a very unpleasant feeling. According to the current national emission standards and air quality standards, the air pollution of rubber factories such as tire companies Matter emission limits: 12mg/m ³ for particulate matter, 10mg/m ³ for ammonia, 15mg/m ³ for toluene and xylene in total, and 10mg/m ³ for total non-methane hydrocarbons. Therefore, the malodorous gas in the rubber industry must be treated before it can be discharged. Generally, the treatment methods for the malodorous exhaust gas produced in the rubber industry mainly include: adsorption concentration catalytic combustion method, biological trickling filter bed method and activated carbon adsorption method.

The advantage of the combustion method is that the removal efficiency is high, and the combustion removal rate is greater than 90%. The disadvantage is that the equipment investment scale is large, and the catalytic combustion temperature required for odor decomposition is relatively high. Therefore, the technical process and equipment are strictly required, and the operating cost is very high high. The removal efficiency of biological filtration technology can reach more than 90%. Due to the slow biological decomposition rate, the upward flow rate of gas entering the tower is required to be very small. In the case of large gas volume, the volume of the biological tower is very large, and the investment scale and land occupation are quite large. Debugging is very troublesome and the operating cost is low. The operating cost of the activated carbon adsorption method is relatively high, and the activated carbon needs to be reprocessed in the later stage. It is troublesome to remove the odor when the amount of exhaust gas is large.

Contents of the invention

Based on this, it is necessary to provide an exhaust gas treatment system for the rubber industry with high treatment efficiency and low energy consumption to address the problems of the prior art.

The technical scheme of the utility model is as follows:

A waste gas treatment system used in a rubber factory, the waste gas treatment system includes a gas collection device and a gas treatment device, the gas collection device is used to collect the gas that needs to be treated generated in the production of the rubber industry;

The gas treatment device includes a spray oxidation absorption tower, a water replenishment system, and a dispensing system, the gas collection device is connected to the spray oxidation absorption tower, and the water replenishment system is used to replenish water to the spray oxidation absorption tower, The dispensing system is used to configure the medicament used in the spray oxidation absorption tower, the water supply system is connected to the spray oxidation absorption tower, and the dispensing system is connected to the spray oxidation absorption tower;

The automatic control system is used to control the operation of the entire waste gas treatment system.

In one of the embodiments, the spray oxidation absorption tower includes a spray oxidation absorption tower body, an air inlet pipe, a drain pipe and an air outlet, and the air inlet pipe is arranged at the lower part of the spray oxidation absorption tower body, so The drain pipe is arranged at the bottom of the spray oxidation absorption tower body, and the gas outlet is arranged at the top of the spray oxidation absorption tower body;

The interior of the spray oxidation absorption tower body is arranged sequentially from bottom to top:

Precipitation oxidation tank: The precipitation oxidation tank is set at the bottom of the spray oxidation absorption tower body, and the oxidant mixture is installed inside. The inlet pipe is connected with the precipitation oxidation tank, and the drainage pipe is set at the bottom;

Absorption section: the absorption section is arranged in the middle of the spray oxidation absorption tower body, and the absorption section is provided with an oxidant spray absorption layer;

Demist section: the demist section is set above the absorption tower body, and the demist section is provided with a water mist removal plate.

In one of the embodiments, the dispensing system includes an oxidant dispensing system, the oxidant dispensing system is connected to the precipitation oxidation tank through a pipeline, and the precipitation oxidation tank is connected to the oxidant spray absorption layer through an oxidant circulation system , the oxidant circulation system includes a circulation pump and pipelines, and the pipelines are respectively connected to the precipitation oxidation tank and the oxidant spray absorption layer.

In one of the embodiments, a support frame is provided on the inner wall of the spray oxidation absorption tower body, the oxidant spray absorption layer is fixed on the spray oxidation absorption tower body through the support frame, and the oxidant spray absorption Fillers are provided inside the layers.

In one of the embodiments, a masking agent absorption section is also arranged inside the spray oxidation absorption tower body, a masking agent spray system is arranged in the masking agent absorption section, and the masking agent absorption section is arranged in the removal Above the mist section and below the air outlet, the dispensing system further includes a masking agent dispensing system, and the masking agent dispensing system is connected to the masking agent spraying system through a pipeline.

In one of the embodiments, the number of the oxidant spray absorbing layer is one layer.

In one of the embodiments, the number of the oxidizing agent spray absorbing layer is two layers.

In one of the embodiments, the gas collection device passes the collected exhaust gas into the gas treatment device through an induced draft fan.

In one of the embodiments, the exhaust gas treatment system further includes an automatic control system, and the automatic control system is PLC, PSP or 51 single-chip microcomputer.

The beneficial effects of the utility model are:

On the basis of meeting the national waste gas emission standards, the utility model makes the construction investment 5% of the adsorption concentration catalytic combustion method and 10% of the biological trickling filter bed process, and the operating cost is 20% of the adsorption concentration catalytic combustion method and the biological trickling filter bed process 50% of. The waste gas treatment system of the utility model is low in cost, and the treatment efficiency of the malodorous gas produced by the rubber factory can reach more than 85%, and the system resistance is small, the energy consumption is low, and the treatment efficiency is high, achieving the economic effect of double reduction of investment and operating costs .

Description of drawings

Below in conjunction with specific drawings and specific embodiments, the utility model is described in further detail.

Fig. 1 is an overall schematic diagram of an embodiment of the waste gas treatment system of the present invention.

Detailed ways

In order to make the purpose, technical solution and advantages of the exhaust gas treatment system for rubber factories of the present utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Referring to Fig. 1, as a possible embodiment, a waste gas treatment system for a rubber factory, the waste gas treatment system includes a gas collection device and a gas treatment device;

The gas collection device is used to collect the gas that needs to be processed generated in the production of the rubber industry. The gas collection device is generally connected to the exhaust pipe of the production workshop of the rubber factory, and the waste gas generated in the production is collected to the gas treatment device;

The gas treatment device includes a spray oxidation absorption tower 1, a water replenishment system 2, and a dispensing system. The absorption tower replenishes water, the dispensing system is used to configure the medicament used in the spray oxidation absorption tower, the water replenishment system is connected to the spray oxidation absorption tower, the dispensing system is connected to the spray oxidation absorption tower; the gas The treatment device is an important part of the waste gas treatment system. The waste gas generated by the factory is collected by the gas collection device and then enters the gas treatment device. After being treated by the gas treatment device, it is discharged into the air. It should meet the national emission standards. The waste gas produced by the rubber industry generally includes sulfur organic matter, hydrocarbons, nitrogen-containing compounds, and dust, among which sulfur organic matter is the main cause of odor, and the hydrocarbons and nitrogen-containing compounds contained in the waste gas have complex components and high concentrations. Small and difficult to handle. In this embodiment, a spray oxidation absorption tower is used to treat the waste gas. The principle of the spray oxidation absorption tower is as follows: the sulfur organic matter or nitrogen organic matter contained in the waste gas contacts with water and the oxidant, and the water acts on the pollutants in the gas first. The physical absorption process is carried out, and then the chemical oxidation reaction is carried out in the spray oxidation absorption tower. The chemical reaction equation is: C _X H _Y OS+[O]→CO ₂ +H ₂ O+SO ₂ , the waste gas is in the spray oxidation absorption tower Contact with oxidant for a long time, oxidant will completely oxidize S and N organic matter to produce NO ₂ , CO ₂ , SO ₂ and so on. The water supply system can be set up to automatically replenish water to the spray oxidation absorption tower to ensure the operation of the gas treatment device; the dispensing system automatically configures other medicaments such as oxidants that meet the requirements as required, and automatically sprays to the oxidation absorption tower under the control of the automatic control system. Complementary medicine.

The automatic control system is used to control the operation of the entire exhaust gas treatment system. In this embodiment, the automatic control system is used to control the operation of the entire exhaust gas treatment system. On the basis of ensuring the removal effect, manual operation is basically not required.

On the basis of meeting the national waste gas emission standards, the utility model makes the investment 5% of the adsorption concentration catalytic combustion method and 10% of the biological dripping filter bed process, and the operating cost is 20% of the adsorption concentration catalytic combustion method and the biological dripping filter bed process. 50%. The waste gas treatment system of the utility model is low in cost, and the treatment efficiency of the malodorous gas produced by the rubber factory can reach more than 85%, and the system resistance is small, the energy consumption is low, and the treatment efficiency is high, achieving the economic effect of double reduction of investment and operating costs .

Preferably, as a possible embodiment, the spray oxidation absorption tower includes a spray oxidation absorption tower body 11, an air inlet pipe 12, a drain pipe 13 and an air outlet 14, and the air inlet pipe 12 is arranged on the spray Shower the bottom of oxidation absorption tower body 11, described drainage pipe 13 is arranged on the bottom of spray oxidation absorption tower body 11, and described air outlet 14 is arranged on the top of described spray oxidation absorption tower body 11;

The inside of the spray oxidation absorption tower body is provided with in turn from bottom to top:

Precipitation and oxidation tank 15: the precipitation and oxidation tank 15 is arranged at the bottom of the spray oxidation absorption tower body 11, and contains an oxidant mixture, the inlet pipe 12 communicates with the precipitation and oxidation tank, and the drain pipe 13 is arranged at the bottom of the oxidation absorption tower body 11. The bottom of the precipitation oxidation pond 15;

Absorption section: the absorption section is arranged in the middle of the spray oxidation absorption tower body, and the absorption section is provided with an oxidant spray absorption layer 16;

Demister section: the demist section is set above the absorption tower body, and the demist section is provided with a mist removal plate 17 .

The air inlet pipe in this embodiment is connected with the gas collection device, and the waste gas collected by the gas collection device enters the spray oxidation absorption tower through the air intake pipe. The oxidant mixture, the waste gas reacts with the oxidant in the oxidant mixture, in order to ensure the treatment effect, the waste gas should stay in the sedimentation oxidation tank for a sufficient time to make the waste gas fully contact with the oxidant mixture, the S, N, etc. in the waste gas The organic matter and the oxidant mixture are fully oxidized after being fully contacted; then the incompletely absorbed exhaust gas continues to rise into the absorption section, and the absorption section is equipped with an oxidant spray absorption layer. Chemical oxidation and physical adsorption of hydrocarbons and ammonia and oxidant spray absorption layer occur, and a large amount of dust, hydrocarbons and other hydrocarbons and ammonia in the exhaust gas are removed, and a gas-liquid heat transfer process occurs in the absorption section; after treatment in the absorption section When the exhaust gas reaches the defogging section, the mist of the absorption liquid entrained in the exhaust gas becomes liquid droplets, which are removed by the water mist removal plate in the defogging section; the exhaust gas treated by the defogging section is discharged into the atmosphere through the exhaust port.

The spray oxidation absorption tower in this embodiment adopts the combined structure of precipitation oxidation tank, absorption section and demisting section, so that N, S, etc. in the exhaust gas are completely reacted and absorbed, so that the treated exhaust gas meets the national emission standards.

Preferably, as a possible implementation, the dispensing system includes an oxidant dispensing system 3, the oxidant dispensing system 3 is connected to the precipitation oxidation tank 15 through a pipeline, and the precipitation oxidation tank 15 is connected to the precipitation oxidation tank 15 through an oxidant circulation system. The oxidant spray absorption layer 16 is connected, and the oxidant circulation system includes a circulation pump 41 and pipelines, and the pipelines are respectively connected with the precipitation oxidation tank 15 and the oxidant spray absorption layer 16 . In this embodiment, the oxidant mixture in the sedimentation oxidation tank is continuously consumed and needs to be replenished. An oxidant dispensing system is set up to continuously replenish the sedimentation oxidation tank to ensure the effect of waste gas treatment; the content of the upper layer of the sedimentation oxidation tank after precipitation The oxidant water can be used in the oxidant spray absorption layer, and the oxidant-containing water reaches the oxidant spray absorption layer through the oxidant circulation system, and the oxidant-containing water in the oxidant spray absorption layer falls back to the precipitation oxidation tank, so that the precipitation oxidation tank The oxidant-containing water can be used for circulating spraying, which saves the consumption of water and oxidant agents, and saves operating costs. In this embodiment, the circulation of water containing oxidant is realized through a circulation pump.

Preferably, as a possible implementation mode, a support frame is provided on the inner wall of the spray oxidation absorption tower body, and the oxidant spray absorption layer is stacked on the spray oxidation absorption tower body through the support frame, the Fillers are arranged inside the oxidant spray absorbing layer.

Preferably, as a possible implementation mode, a masking agent absorption section is also arranged inside the spray oxidation absorption tower body, a masking agent spray system 18 is arranged in the masking agent absorption section, and the masking agent absorption section It is arranged above the defogging section and below the air outlet 14, and the dispensing system further includes a masking agent dispensing system 4, and the masking agent dispensing system 4 is connected to the masking agent spraying system 18 through pipelines. In order to prevent the treated exhaust gas from adversely affecting human perception, a masking agent absorption section is provided in this embodiment, and the exhaust gas will not produce foul odor through the action of the masking agent and the exhaust gas. The masking agent used in this embodiment is a plant extract deodorant.

Preferably, as an implementable manner, the number of the oxidant spray absorbing layer is one layer. Under the conditions of low processing capacity or low content of S, N, etc. in the exhaust gas, only one oxidant spray absorbing layer can be designed.

Preferably, as an implementable manner, the number of the oxidant spray absorbing layers is two. In order to ensure the treatment effect, two layers of oxidant spray absorption layer are set up to ensure that the treatment effect exceeds 85%.

Preferably, as a possible implementation manner, the gas collection device passes the collected waste gas into the gas treatment device through an induced draft fan. The gas collection device is generally connected to the centralized ventilation system of the factory. In order to make the gas pass into the gas treatment device, an induced draft fan is generally installed to increase the pressure of the gas.

Preferably, as an implementable manner, the waste gas treatment system further includes an automatic control system, and the automatic control system is PLC, PSP or 51 single-chip microcomputer. A liquid level control is provided in the precipitation oxidation tank, and the automatic control system controls the start and stop of the dispensing device according to the liquid level control.

Finally, it should be noted that in this patent document, relative terms such as first, second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these There is no relationship or order between entities or operations. Moreover, in this patent document, the terms "comprising", "comprising", or any other variation thereof, are intended to encompass but not exclusively, such that a process, method, article, or device comprising a series of elements does not only include these elements, but also include other elements not explicitly listed but known to those skilled in the art, or also include essential elements known to those processes, methods, articles or equipment.

The above-mentioned embodiments only express several implementations of the utility model, and the description thereof is relatively specific and detailed, but it should not be construed as limiting the patent scope of the utility model. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (9)

1. A waste gas treatment system for a rubber factory, said waste gas treatment system comprising a gas collection device and a gas treatment device, characterized in that: The gas collection device is used to collect the gas that needs to be treated generated in the production of the rubber industry; The gas treatment device includes a spray oxidation absorption tower, a water replenishment system, and a dispensing system, the gas collection device is connected to the spray oxidation absorption tower, and the water replenishment system is used to replenish water to the spray oxidation absorption tower, The dispensing system is used to configure the medicament used in the spray oxidation absorption tower, the water supply system is connected to the spray oxidation absorption tower, and the dispensing system is connected to the spray oxidation absorption tower; The automatic control system is used to control the operation of the entire waste gas treatment system. 2. The exhaust gas treatment system according to claim 1, characterized in that: The spray oxidation absorption tower includes a spray oxidation absorption tower body, an air inlet pipe, a drain pipe and an air outlet, the air inlet pipe is arranged at the lower part of the spray oxidation absorption tower body, and the drain pipe is arranged at the spray oxidation absorption tower body. The bottom of the oxidation absorption tower body, the gas outlet is arranged on the top of the spray oxidation absorption tower body; The inside of the spray oxidation absorption tower body is provided with in turn from bottom to top: Precipitation oxidation tank: The precipitation oxidation tank is set at the bottom of the spray oxidation absorption tower body, and the oxidant mixture is installed inside. The inlet pipe is connected with the precipitation oxidation tank, and the drainage pipe is set at the bottom; Absorption section: the absorption section is arranged in the middle of the spray oxidation absorption tower body, and the absorption section is provided with an oxidant spray absorption layer; Demist section: the demist section is set above the absorption tower body, and the demist section is provided with a water mist removal plate. 3. The exhaust gas treatment system according to claim 2, characterized in that: The dispensing system includes an oxidant dispensing system, the oxidant dispensing system is connected to the precipitation oxidation tank through a pipeline, and the precipitation oxidation tank is connected to the oxidant spray absorption layer through an oxidant circulation system, and the oxidant circulation system includes A circulation pump and pipelines, the pipelines are respectively connected with the precipitation oxidation tank and the oxidant spray absorption layer. 4. The waste gas treatment system according to claim 3, characterized in that: A support frame is provided on the inner wall of the spray oxidation absorption tower body, the oxidant spray absorption layer is stacked on the spray oxidation absorption tower body through the support frame, and fillers are arranged inside the oxidant spray absorption layer. 5. The exhaust gas treatment system according to claim 4, characterized in that: A masking agent absorption section is also arranged inside the spray oxidation absorption tower body, a masking agent spray system is arranged in the masking agent absorption section, and the masking agent absorption section is arranged above the demister section and the Below the air outlet, the dispensing system further includes a masking agent dispensing system, and the masking agent dispensing system is connected to the masking agent spraying system through a pipeline. 6. The exhaust gas treatment system according to claim 5, characterized in that: The number of the oxidant spray absorbing layer is one layer. 7. The exhaust gas treatment system according to claim 6, characterized in that: The quantity of said oxidant spray absorbing layer is two layers. 8. The exhaust gas treatment system according to claim 1, characterized in that: The gas collection device passes the collected exhaust gas into the gas treatment device through the induced draft fan. 9. The exhaust gas treatment system according to claim 1, characterized in that: The exhaust gas treatment system also includes an automatic control system, which is PLC, PSP or 51 single-chip microcomputer.