CN210145795U - High-concentration organic waste gas efficient treatment system - Google Patents
High-concentration organic waste gas efficient treatment system Download PDFInfo
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- CN210145795U CN210145795U CN201920457306.8U CN201920457306U CN210145795U CN 210145795 U CN210145795 U CN 210145795U CN 201920457306 U CN201920457306 U CN 201920457306U CN 210145795 U CN210145795 U CN 210145795U
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Abstract
The utility model provides a high concentration organic waste gas high efficiency processing system, by retrieving module (absorption or condensation) and high-efficient burning module (mixing formula surface combustion ware in advance) and realizing, waste gas realizes the recovery of high concentration oil gas through retrieving the module, and the well low concentration waste gas after retrieving gets into the high efficiency and burns the module and realize the stability of system, up to standard, the ultralow concentration discharges, can realize that the extremely low VOCs concentration of tail gas discharges when high concentration oil gas effectively retrieves. The system can realize the recovery and standard emission of organic waste gas and simultaneously realize the purpose of energy conservation.
Description
Technical Field
The utility model relates to an organic waste gas handles the field, especially a high concentration organic waste gas high efficiency processing system.
Background
In the production, storage and transportation, loading and unloading links of organic chemicals, organic components can volatilize and enter the atmosphere, and the organic components participate in atmospheric chemical reaction after entering the atmosphere, so that the frequent occurrence of haze is caused. Typical application scenarios are as follows: oil loading and unloading of wharfs, automobiles and trains; and storing the intermediate products and the finished products in the tank area in the production process. Typical components are as follows: crude oil, gasoline, diesel, aviation kerosene, triphenyl, and other volatile components.
The organic waste gas generated in the typical use environment has the characteristics of high concentration, large fluctuation and the like. For the waste gas with large change, the oil gas recovery process is mainly adopted at present, such as an adsorption method (such as CN 102764562A) and a condensation method (such as CN 101342427B)And recovering by membrane method (such as CN 204502711U). The international mainstream emission standard is in the range of 10g/m3 to 30g/m3, and the oil gas treatment process has a good effect on concentration reduction and emission reduction of high-concentration waste gas. However, with the advent of industry standards and local standards, the above emission standards have been difficult to apply, so that it is very difficult to achieve stable emission of tail gas up to standard by simply adopting a certain process, and the input-output ratio is seriously unbalanced. At present, the direct combustion technology, the heat accumulation combustion technology and the catalytic combustion technology are commonly adopted in the field of waste gas incineration, the concentration of a tail gas inlet is strictly limited, and the high-concentration waste gas field which is used in the combustion technology and is popularized and applied has more limitation. Meanwhile, the existing burners for regenerative combustion and catalytic combustion adopt the problems that fuel gas and air enter a combustion chamber through a combustion head and then are mixed and combusted, the high-temperature retention time of the combustion chamber, the distribution of the flame temperature field is not uniform, the combustion air is not uniformly mixed and the like, so that NO in the flue gas is causedXAnd the emission of VOCs is higher.
The utility model discloses develop a high-efficient processing system suitable for high concentration organic waste gas administers field to less cost realizes the recovery and the extremely low concentration emission of waste gas, and each item discharges the index and satisfies the newest emission index of country and trade.
SUMMERY OF THE UTILITY MODEL
The utility model provides a high concentration organic waste gas high efficiency processing system, its aim at realize organic waste gas's recovery and discharge to reach standard, realize the purpose of energy-conservation simultaneously.
The utility model provides an above-mentioned technical problem's technical scheme as follows: the utility model provides a high concentration organic waste gas high efficiency processing system, its characterized in that burns the module by retrieving the module with high efficiency and realizes, wherein, retrieves the module and is absorption system or condensing system, and the high efficiency is burnt the module and is premixed formula surface combustion ware, and waste gas realizes the recovery of high concentration oil gas through retrieving the module, and the middle low concentration waste gas after retrieving gets into the high efficiency and burns the module and realize stable, the discharge to reach the standard of system.
The absorption system is developed according to the following scheme that the saturated vapor pressure of the selected absorbent at 25 ℃ is not more than 20KPa, the circulation amount of the absorbent is between 0.01t/m3 waste gas and 1t/m3 waste gas, and the temperature of the absorbent is between-10 ℃ and 45 ℃. The absorbent is from a storage and transportation link or a special absorbent tank. Monitoring the saturated vapor pressure of the absorbent to be not more than 20KPa when the absorbent is recycled.
The condensing system is implemented according to the following scheme that the condensing temperature is between-100 ℃ and-5 ℃, and the condensation is secondary condensation or tertiary condensation. The first stage is a gas-gas heat exchanger, and the condensed gas is used as waste gas for precooling so as to recover part of cold energy. And collecting the condensed organic liquid in a storage tank, and sending the organic liquid out to other working procedures for treatment.
After the high-concentration waste gas is treated by the recovery module, the concentration of organic components at the outlet of the recovery module is between 1% vol and 20% vol, and the temperature of gas at the outlet of the recovery module is between 5 ℃ and 45 ℃.
The high-efficiency incineration module is a premixed surface burner. The waste gas from the recovery module is fully mixed with air and combustion-supporting gas in a mixing chamber of the combustor, the fully mixed gas is fully combusted in a surface combustor, and the high-altitude emission of the combusted tail gas is realized through a flue. The waste gas, air and combustion-supporting gas of the premixing type surface combustion system realize the real-time regulation of flow, pressure and temperature through a series of valve banks and monitoring instruments. The mixing chamber of the burner is formed by a primary or secondary gas flow mixing section. In the gas mixer, the organic waste gas, the combustion-supporting gas and the air are fully mixed.
The combustion-supporting gas is light oil gas such as natural gas, liquefied petroleum gas, propane, butane, fuel gas, oil gas and the like. Combustion-supporting gases are optional as the concentration of combustible components in the exhaust gas can maintain self-sustaining combustion.
The surface burner adopts a metal fiber burner and is supported by a steel structure. The metal fiber is made of iron-chromium-aluminum alloy material. The metal fiber structure may be a planar structure, cylindrical, conical, annular. Preferably, a planar structure is adopted to realize uniform combustion of the tail gas. The unit heat load of the surface combustion system is between 200KW/m2Up to 20000KW/m2。
The recovery module and the high-efficiency incineration module realize integrated control through a programmable logic control system or a distributed control system. The control signals from the recovery module and the high-efficiency incineration module realize the automatic operation of the system through certain control logic.
The utility model has the advantages of as follows: high economic benefit, low energy consumption, stable operation and ultralow emission of VOCs.
Drawings
FIG. 1 is a schematic view of a typical system combining an absorption module and a high-efficiency incineration module. The figures are presented as a typical application only, and the reference numbers in figure 1 represent respectively: 1 is organic waste gas to be treated, 2 is absorbent recovery liquid, 3 is absorbent, 4 is combustion-supporting gas, 5 is absorbed tower top noncondensable gas (recovery module outlet gas), 6 is premixed combustion gas, 7 is standard exhaust gas, 8 is a programmable logic control system, 9 is air, 10 is an absorbent storage tank, 11 is an absorption tower, 12 is a gas mixer, and 13 is a surface combustion system.
Fig. 2 is a schematic view of a typical combination system of a condensation module and a high-efficiency incineration module. The drawing is shown as a typical application only, and the reference numbers in fig. 2 represent: 1 is organic waste gas to be treated, 4 is combustion-supporting gas, 5 is non-condensable gas (recovery module outlet gas) subjected to condensation treatment, 6 is premixed combustion gas, 7 is standard exhaust gas, 8 is a programmable logic control system, 9 is air, 12 is a gas mixer, 13 is a surface combustion system, 14 is a primary gas-gas heat exchanger, 15 is a secondary gas-liquid heat exchanger, 16 is a refrigeration system, and 17 is a liquid storage tank.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, which are not intended as a limiting description of the invention.
Example 1 shows a high-efficiency treatment system for high-concentration organic waste gas, which is composed of an absorption module and a high-efficiency incineration module.
VOCs high concentration waste gas 1 from train loading passes through the pipeline and carries to absorption tower 11, and high concentration waste gas gets into from the absorption tower lower part, and absorbent 3 (diesel oil) from absorbent storage tank 10 passes through the pipeline and carries to the absorption tower top, and the absorption of VOCs component is realized in absorption tower reverse contact to the gas-liquid, and absorbent recovery liquid 2 after the absorption is carried to storage tank 10 further recycles.
The absorbed tower top noncondensable gas (recovery module outlet gas) 5, the combustion-supporting gas 4 and the air 9 are fully mixed in a gas mixer 12; the mixed combustion gas 6 enters a surface combustion system 13 to realize full combustion, and the combusted gas 7 is discharged after reaching the standard.
According to high concentration organic waste gas high efficiency processing system, VOCs, NOx content in 7 after the burning are far below the national emission index requirement, the energy consumption of system is about the quarter of conventional vapor recovery system technology.
Example 2 shows a high-efficiency treatment system for high-concentration organic waste gas, which is composed of a condensation module and a high-efficiency incineration module.
VOCs high concentration waste gas 1 from wharf shipment is conveyed to the first-level gas-gas heat exchanger 14 through a pipeline to be subjected to preliminary condensation, then enters the second-level gas-liquid heat exchanger 15 to be subjected to deep condensation, and the condensed gas is used as a cold source of the first-level gas-gas heat exchanger 14. The cold source of the secondary gas-liquid heat exchanger 15 comes from the refrigerant provided by the refrigeration system 16. The VOCs components condensed by the condensing system are stored in liquid form in a liquid storage tank 17.
Fully mixing the non-condensable gas (recovery module outlet gas) 5 subjected to condensation treatment, the combustion-supporting gas 4 and the air 9 in a gas mixer 12; the mixed combustion gas 6 enters a surface combustion system 13 to realize full combustion, and the combusted gas 7 is discharged after reaching the standard.
According to high concentration organic waste gas high efficiency processing system, VOCs, NOx content in gas 7 after the burning are far below the national emission index requirement, the energy consumption of system is about the third of conventional vapor recovery system technology.
The systems in embodiments 1 and 2 realize automatic control by the editable logic control system 8, and the whole operating system realizes unattended operation.
The combustion-supporting gas described in examples 1 and 2 was natural gas.
The parts not related to in the utility model are all the same with the prior art or can be realized by adopting the prior art.
Claims (7)
1. The utility model provides a high concentration organic waste gas high efficiency processing system, its characterized in that burns the module by retrieving the module with high efficiency and realizes, wherein, retrieves the module and is absorption system or condensing system, and the high efficiency is burnt the module and is premixed formula surface combustion ware, and waste gas realizes the recovery of high concentration oil gas through retrieving the module, and the middle low concentration waste gas after retrieving gets into the high efficiency and burns the module and realize that stability, standard reaching, the ultralow concentration of system are discharged.
2. The high-efficiency treatment system for the high-concentration organic waste gas as claimed in claim 1, wherein when the recovery module adopts an absorption system, the saturated vapor pressure of the selected absorbent at 25 ℃ is not more than 20KPa, the circulation amount of the absorbent is 0.01t/m3 waste gas to 1t/m3 waste gas, and the temperature of the absorbent is between-10 ℃ and 45 ℃.
3. The high-efficiency treatment system for the high-concentration organic waste gas as claimed in claim 1, wherein when the recovery module adopts a condensation system, the condensation temperature is between-100 ℃ and-5 ℃, the condensation is multi-stage condensation, wherein the first stage is a gas-gas heat exchanger, and the condensed gas is used for precooling the waste gas to recover part of cold.
4. The high-efficiency treatment system for the high-concentration organic waste gas as claimed in claim 1, wherein after the high-concentration waste gas is treated by the recovery module, the concentration of the organic component at the outlet of the recovery module is between 1% vol and 20% vol, and the temperature of the gas at the outlet of the recovery module is between 5 ℃ and 45 ℃.
5. The high-efficiency treatment system for the high-concentration organic waste gas as claimed in claim 1, wherein the high-efficiency incineration module is a premixing type surface burner, the waste gas from the recovery module is fully mixed with air and combustion-supporting gas in a mixing chamber of the burner, the fully mixed gas is fully combusted in the surface burner, and the high-altitude emission of the combusted tail gas reaching standards is realized through a flue.
6. The high-efficiency treatment system for the high-concentration organic waste gas as claimed in claim 1, wherein the waste gas, the air and the combustion-supporting gas of the premixing type surface burner are adjusted in real time through a series of valve banks and monitoring instruments, a mixing chamber of the burner is composed of a primary or secondary gas flow mixing section, and the organic waste gas, the combustion-supporting gas and the air are fully mixed in a gas mixer.
7. The high-efficiency treatment system for the high-concentration organic waste gas as claimed in claim 1, wherein the premixed surface burner is a metal fiber burner, the metal fiber is made of iron-chromium-aluminum alloy material and is supported by a steel structure, the structure of the premixed surface burner is a planar structure, a cylindrical structure, a conical structure or an annular structure, and the unit heat load of the surface combustion system is 200KW/m2Up to 20000KW/m2。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920457306.8U CN210145795U (en) | 2019-04-08 | 2019-04-08 | High-concentration organic waste gas efficient treatment system |
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| CN201920457306.8U CN210145795U (en) | 2019-04-08 | 2019-04-08 | High-concentration organic waste gas efficient treatment system |
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| CN210145795U true CN210145795U (en) | 2020-03-17 |
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| CN201920457306.8U Active CN210145795U (en) | 2019-04-08 | 2019-04-08 | High-concentration organic waste gas efficient treatment system |
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