Incineration device for butyl acrylate production
By designing a multi-stage treatment system in the production of butyl acrylate, including incinerators, quenchers, desulfurization scrubbers, bag dust collectors, SCR denitrification devices and fiber adsorption devices, the problem of handling harmful substances in waste gas and waste liquid after incineration is solved. The environmentally friendly flue gas treatment and emission standards have been achieved.
Patent Information
- Application Number
- CN202421378958.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-17
- Publication Date
- 2024-12-10
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
During the butyl acrylate production process, it is difficult to effectively remove harmful substances such as NOx, SO2, particulate matter and dioxin during the incineration process, resulting in the failure to meet the standards and the risk of environmental pollution.
A system including incinerator, quench, desulfurization scrubber, bag dust collector, SCR denitrification device and fiber adsorption device was designed. The wastewater and heavy components were atomized and burned through the incinerator. The quencher controlled the flue gas temperature and desulfurized The scrubber absorbs SO2, the bag dust collector collects particulate matter, the SCR denitrification device treats nitrogen oxides, and the fiber adsorbs dioxins to ensure that the exhaust gas quality meets environmental standards.
The harmless treatment of waste gas and waste liquid is achieved, effectively reducing the emission concentration of NOx, SO2, particulate matter and dioxin, ensuring that the emitted flue gas meets the standards and protecting the environment.
Smart Images
Figure CN222143067U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of chemical production, in particular to an incineration device for producing butyl acrylate. Background Art
[0002] In the production process of butyl acrylate, waste gas and salt-containing waste liquid are generated in each production process. A large amount of butyl acrylate recombinant components are present in the waste liquid after butyl acrylate separation. The waste liquid and waste gas are usually treated by incineration to avoid environmental pollution.
[0003] After high-temperature incineration, flue gas will contain harmful substances such as NOx, SO2, particulate matter, and dioxins. It is necessary to analyze and calculate the materials and design a corresponding tail gas treatment system to treat hazardous waste harmlessly and ensure that the tail gas discharged into the atmosphere meets the standards. Summary of the invention
[0004] In order to ensure that waste gas and waste water in the production of butyl acrylate can be treated harmlessly, the utility model aims to provide an incineration device for the production of butyl acrylate.
[0005] The technical solution adopted by the utility model is:
[0006] The incineration device for producing butyl acrylate comprises an incinerator, which is a vertical cylindrical structure. A natural gas input pipeline and an organic heavy component input pipeline are installed on the top of the incinerator. A wastewater spray gun is installed on the side of the top of the incinerator, and the wastewater spray gun is connected to the wastewater input; a burner is arranged on the top of the incinerator, and the burner is connected to the natural gas input pipeline; a quencher is installed at the bottom of the incinerator, and a quench tank is installed at the bottom of the quencher, and the side of the top of the quencher and the quench tank are connected to the process water input, and the top of the quench tank is provided with a quenching flue gas The quenched flue gas outlet is connected to the desulfurization scrubber through a pipeline, the quenched flue gas outlet is communicated with the top of the desulfurization scrubber, a plurality of spray heads are arranged in the desulfurization scrubber, the bottom of the desulfurization scrubber is connected with a desulfurization tank, the top of the desulfurization tank is provided with a desulfurization flue gas outlet, the desulfurization flue gas outlet is connected to the bag filter through a pipeline, the gas outlet of the bag filter is connected to the inlet flue of the SCR denitrification device through a pipeline, the outlet flue of the SCR denitrification device is connected with a fiber adsorption device, and the fiber adsorption device is connected to the chimney through an induced draft fan.
[0007] Furthermore, a waste gas input pipe is provided on the side of the top of the incinerator, and the waste gas input pipe is connected to an induced draft fan.
[0008] Furthermore, the natural gas input pipeline is connected to a compressed air pipeline, the organic heavy component input pipeline is connected to a steam pipeline, and the exhaust gas input pipeline is connected to a compressed air pipeline.
[0009] Furthermore, the bottom of the quench tank is connected to a water seal tank via a pipeline. The water seal tank is a sealed tank body, and the top of the water seal tank is connected to a brine pool via an overflow pipeline.
[0010] Furthermore, a brine output pump is installed in the brine pool, and the brine output pump is connected to the waste salt pool via a pipeline.
[0011] Furthermore, the desulfurization tank is connected to process water input, and a circulation pump is provided at the bottom of the desulfurization tank. The circulation pump is connected to the middle and upper parts of the quench cooler and the nozzle of the desulfurization scrubber through pipelines.
[0012] Furthermore, the input end of the SCR denitration device is connected to an ammonia mixer, an atomizing nozzle is installed in the ammonia mixer, and the atomizing nozzle is connected to the ammonia water tank through a pipeline.
[0013] Furthermore, pipeline heaters are installed on both sides of the bag filter, and the pipeline heaters are connected to natural gas input.
[0014] Furthermore, an output end of the pipeline heater close to the ammonia mixer is connected to the ammonia mixer.
[0015] After adopting the above technical scheme, the beneficial effects of the utility model are:
[0016] Through the incinerator and the burner on its top, wastewater, heavy components, etc. are atomized and then burned, which can achieve the simultaneous treatment of wastewater, waste gas and heavy components; the soluble salt in the flue gas can be dissolved by the quench tank and collected and then treated by the water seal tank and the brine pool; the quench cooler can control the temperature below the temperature range of dioxin regeneration, effectively controlling the dioxin content in the exhaust gas; the desulfurization scrubber can absorb acid gas and dissolve the SO2 gas in the flue gas in the absorption liquid; the particulate matter in the flue gas is collected by the bag filter, and finally the nitrogen compounds in the exhaust gas are treated by the SCR denitrification device, and finally the dioxin substances that may exist in the flue gas are adsorbed by carbon fiber adsorption to ensure that the discharged flue gas meets environmental protection requirements. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a system schematic diagram of the utility model. DETAILED DESCRIPTION
[0018] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings:
[0019] like Figure 1 As shown, the incineration device for producing butyl acrylate is composed of an incinerator 1, a quench cooler 2, a desulfurization scrubber 3, a bag filter 4, an SCR denitrification device 5, a fiber adsorption device 6, a chimney 7 and related pipelines, fans, etc.
[0020] The incinerator 1 is used to incinerate the waste gas, waste water, heavy components, etc. generated during the production process. The incinerator 1 is a vertical cylindrical structure. The top of the incinerator 1 is equipped with a natural gas input pipeline 11, an organic heavy component input pipeline 12, a waste gas input pipeline 13, and a waste water input pipeline 14. The waste gas input pipeline 13 is connected to an induced draft fan for sending waste into the incinerator 1. A waste water spray gun is installed on the side of the top of the incinerator 1. The waste water spray gun is connected to the waste water input pipe 13. The waste water spray gun 13 atomizes the waste water for easy incineration. A burner is provided at the top of the incinerator 1, and the burner is connected to the weather input pipe 11; when treating heavy components, since the heavy components are combustible, the burner does not need to be fed with natural gas. When treating waste gas and waste water, the burner needs to be fed with natural gas for combustion assistance. In order to achieve a better combustion effect, the natural gas input pipeline 11 is connected to the compressed air pipeline 15 , the organic heavy component input pipeline 12 is connected to the steam pipeline 16 , and the exhaust gas input pipeline 13 is connected to the compressed air pipeline 15 .
[0021] The quencher 2 is used to cool the flue gas in the incinerator 1 and control the flue gas temperature below 100°C to inhibit the generation of dioxins. The quencher 2 is installed at the bottom of the incinerator 1. A quench tank 21 is installed at the bottom of the quencher 2. The side of the top of the quencher 2 and the quench tank 21 are connected to process water input, forming an atomized spray water mist in the quencher 2. The flue gas in the incinerator 1 enters the quencher 2 through a pipeline. The flue gas can evaporate and vaporize in contact with the water mist within 1 second. Through heat exchange, it quickly releases heat and drops below 100°C. The SO2 gas in the flue gas dissolves in the process water, and the soluble salts in the flue gas, such as sodium carbonate and sodium sulfate, dissolve to form brine and flow into the quench tank 21. The bottom of the quench tank 21 is connected to a water seal tank 8 through a pipeline. The water seal tank 8 is a sealed tank body, and the top of the water seal tank 8 is connected to a brine pool 9 through an overflow pipeline. A brine output pump is installed in the brine pool 9, and the brine output pump is connected to the waste salt pool through a pipeline.
[0022] The desulfurization scrubber 3 is mainly used to absorb sulfides in the tail gas. A quenching flue gas outlet is provided at the top of the quench cooler 2, and the quenching flue gas outlet is connected to the top of the desulfurization scrubber 3 through a pipeline. A plurality of spray heads are provided in the desulfurization scrubber 3, and a desulfurization tank 31 is connected to the bottom of the desulfurization scrubber 3. The spray head of the desulfurization scrubber 3 is connected to the process water input. A circulating pump is provided at the bottom of the desulfurization tank 31, and the circulating pump is connected to the middle and upper parts of the quench cooler 2 and the spray head of the desulfurization scrubber 3 through a pipeline to form a cycle. The flue gas is desulfurized in the desulfurization scrubber 3. A desulfurization flue gas outlet is provided at the top of the desulfurization tank 31, and the desulfurization flue gas outlet is connected to the bag filter 4 through a pipeline.
[0023] The bag filter 4 is used to collect particulate matter in the flue gas, such as sodium carbonate, sodium sulfate, etc. The bag filter 4 adopts the sedimentation filtration technology. The high-concentration dust-containing gas enters from the air inlet duct, the cross section suddenly expands, and the flow rate is greatly reduced (about 3m / s). Under the action of the guide plate in the box, most of the large dust particles fall directly into the ash hopper, and the remaining dust-containing gas enters the ash hopper downward and then enters the bag filter area. Part of the lighter airflow enters the filter bag filter area of the box from the upper part of the bag chamber under the action of the guide plate, so that the airflow direction and dust sedimentation do not conflict, which is conducive to the sedimentation of dust. At the same time, it avoids the risk of large particles with high temperature entering the filter area when the system is abnormal, directly flushing the filter bag, and thus burning and damaging the filter bag.
[0024] In order to protect the bag filter 4 and improve the system operation time, a pipeline heater 10 is installed between the desulfurization scrubber 3 and the bag filter 4, and the pipeline heater 10 is connected to the natural gas input. The pipeline heater 10 is a skid device, which uses a pipeline burner, has a combustion-supporting fan, a regulating valve group, etc., and achieves the purpose of reheating the cold flue gas by mixing the high-temperature flue gas after combustion with the cold flue gas.
[0025] The exhaust gas after bag dust removal is discharged from the air outlet and enters the SCR denitrification device 5. Due to the high water vapor content in the flue gas, in order to protect the catalyst, a pipeline heater is also set between the bag dust collector 4 and the SCR denitrification device 5 to heat the flue gas temperature to 300°C. The input end of the SCR denitrification device 5 is connected to an ammonia mixer 51, and an atomizing nozzle is installed in the ammonia mixer 51, and the atomizing nozzle is connected to the ammonia water tank 52 through a pipeline. The ammonia water is metered and transported to the spray gun by an ammonia water pump, and is sprayed into the flue with compressed air as the atomizing medium. The exhaust gas and ammonia water react in the SCR denitrification device 5 to selectively catalyze the conversion of nitrogen oxides into nitrogen and water naturally contained in the air. The catalyst is a customized low-temperature and high-humidity honeycomb catalyst, which has the advantages of high low-temperature catalytic efficiency, strong resistance to moisture interference, large specific surface area, and high mechanical strength.
[0026] The outlet flue of the SCR denitrification device 5 is connected to the fiber adsorption device 6, which uses the rich microporous structure of the carbon fiber material to enrich and intercept dioxins, adsorb and remove them, so that the flue gas is purified. The fiber adsorption device 6 is connected to the chimney 7 through the induced draft fan. The purified exhaust gas is discharged from the chimney 7.
Claims
1. An incineration device for producing butyl acrylate, comprising an incinerator, the incinerator is a vertical cylindrical structure, a natural gas input pipeline and an organic heavy component input pipeline are installed on the top of the incinerator, a wastewater spray gun is installed on the side of the top of the incinerator, and the wastewater spray gun is connected to the wastewater input; a burner is provided on the top of the incinerator, and the burner is connected to the natural gas input pipeline; characterized in that, A quench cooler is installed at the bottom of the incinerator, and a quench tank is installed at the bottom of the quench cooler. The side of the top of the quench cooler and the quench tank are connected to process water input. A quench flue gas outlet is provided on the top of the quench tank, and the quench flue gas outlet is connected to the desulfurization scrubber through a pipeline. The quench flue gas outlet is connected to the top of the desulfurization scrubber. A plurality of spray heads are provided in the desulfurization scrubber. The bottom of the desulfurization scrubber is connected to the desulfurization tank. A desulfurization flue gas outlet is provided on the top of the desulfurization tank. The desulfurization flue gas outlet is connected to the bag filter through a pipeline. The gas outlet of the bag filter is connected to the inlet flue of the SCR denitrification device through a pipeline. The outlet flue of the SCR denitrification device is connected to a fiber adsorption device, and the fiber adsorption device is connected to the chimney through an induced draft fan.
2. The incineration device for producing butyl acrylate according to claim 1, characterized in that: A waste gas input pipe is provided on the side of the top of the incinerator, and the waste gas input pipe is connected to an induced draft fan.
3. The incineration device for producing butyl acrylate according to claim 2, characterized in that: The natural gas input pipeline is connected to a compressed air pipeline, the organic heavy component input pipeline is connected to a steam pipeline, and the exhaust gas input pipeline is connected to a compressed air pipeline.
4. The incineration device for producing butyl acrylate according to claim 1, characterized in that: The bottom of the quench tank is connected to a water seal tank through a pipeline. The water seal tank is a sealed tank body. The top of the water seal tank is connected to a salt water pool through an overflow pipeline.
5. The incineration device for producing butyl acrylate according to claim 4, characterized in that: A salt water output pump is installed in the salt water pool, and the salt water output pump is connected to the waste salt pool via a pipeline.
6. The incineration device for producing butyl acrylate according to claim 1, characterized in that: The desulfurization tank is connected to the process water input, and a circulation pump is arranged at the bottom of the desulfurization tank. The circulation pump is connected to the middle and upper parts of the quench cooler and the nozzle of the desulfurization scrubber through pipelines.
7. The incineration device for producing butyl acrylate according to claim 1, characterized in that: The input end of the SCR denitration device is connected to an ammonia mixer, an atomizing nozzle is installed in the ammonia mixer, and the atomizing nozzle is connected to the ammonia water tank through a pipeline.
8. The incineration device for producing butyl acrylate according to claim 7, characterized in that: Pipe heaters are respectively installed on both sides of the bag filter, and the pipe heaters are connected to natural gas input.
9. The incineration device for producing butyl acrylate according to claim 8, characterized in that: The output end of the pipeline heater close to the ammonia mixer is connected to the ammonia mixer.