CN215996124U - Device is administered in synthesis of refining device VOCs - Google Patents
Device is administered in synthesis of refining device VOCs Download PDFInfo
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- CN215996124U CN215996124U CN202121927616.5U CN202121927616U CN215996124U CN 215996124 U CN215996124 U CN 215996124U CN 202121927616 U CN202121927616 U CN 202121927616U CN 215996124 U CN215996124 U CN 215996124U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model provides a comprehensive treatment device for VOCs (volatile organic compounds) of a refining device, which relates to the technical field of petrochemical industry and comprises an evaporative air cooler, a condensate tank, a drug absorption tank, a steam-water separator and a condensation adsorption oil-gas recovery device, wherein the condensation treatment of the comprehensive treatment device comprises two sections of condensation processes, namely a pre-cooling section (3-5 ℃) and a primary condensation section (20-30 ℃), wherein the purged steam (oil-gas) enters the evaporative air cooler, the temperature of the purged steam (oil-gas) is reduced to 3-5 ℃ through the pre-cooling section, the temperature of the primary condensation section is reduced to-20-30 ℃, the gas and the liquid are separated through the steam-water separator, the condensate after air cooling is boosted by a pump and sent to the steam-water separator for separation, more than 85% of effective components are liquefied after condensation, the gas phase part enters the VOCs treatment drug absorption tank and passes through the flow of an outlet of a circulating pump, the vacuum degree of the vacuum pump is adjusted, VOCs gas is sucked into the treatment drug absorption tank step by step, the gas is absorbed and purified by the adsorbent, and purified gas without peculiar smell is discharged into the atmosphere.
Description
Technical Field
The utility model relates to the technical field of petrochemical industry, in particular to a comprehensive treatment device for VOCs (volatile organic compounds) of a refining device.
Background
In recent years, the problem of regional air pollution such as haze, photochemical smog and the like caused by the emission of a large amount of Volatile Organic Compounds (VOCs) seriously threatens public health. The definition of volatile organic compounds in the emission standard of petroleum refining industry pollutants is as follows: organic compounds which participate in atmospheric photochemical reactions, or organic compounds which are determined by measurement or by accounting according to a defined method. VOCs are various in types and complex in components, are important precursors of ozone and secondary organic particulate matters, and have toxic, irritant and carcinogenic effects in part of components.
The comprehensive VOCs treatment device is a set of waste gas treatment equipment, and the system is mainly used for treating a large amount of high-concentration waste gas (containing volatile organic compounds such as hydrocarbons, benzenes, alcohols, aldehydes, acids, ketones, amines, butadiene, dichloromethane and the like) generated by a production device in the complete set or partial shutdown maintenance process in the industries such as petrochemical industry, coal chemical industry, fine chemical industry and the like.
VOCs comprehensive treatment device, the device makes harmful component in the volatile organic compounds absorbed the adsorption separation, helps the enterprise to accomplish "gas does not rise the sky in the device shutdown process, and oil does not fall to the ground" purification purpose, provides effectual method for device green stops work, and the effect reaches GB 31570 supplyes mutually 2015 oil refining industry pollutant emission standard after the use.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects in the prior art and provide a comprehensive treatment device for VOCs of a refining and chemical device.
In order to achieve the purpose, the utility model adopts the following technical scheme: the utility model provides a refining and chemical device VOCs synthesizes treatment device, includes evaporation formula air cooler, condensate tank, medicine absorption tank, catch water, condensation adsorbs oil gas recovery unit, evaporation formula air cooler communicates each other with the condensate tank through the pipeline, the condensate tank communicates with medicine absorption tank, catch water and condensation adsorption oil gas recovery system respectively, all communicate each other through the pipeline between medicine absorption tank and the catch water.
In a preferred embodiment, the drug absorption tanks are provided with two drug absorption tanks, and 40% of alkaline water and 35% of deodorant are respectively added into the two drug absorption tanks.
As a preferred embodiment, the internal temperature of the evaporative air cooler is-30 to 5 ℃ during operation.
In a preferred embodiment, the steam-water separator is communicated with a condensation adsorption oil-gas recovery system.
In a preferred embodiment, the condensed adsorption oil recovery system comprises a refrigeration unit and an adsorption unit.
Compared with the prior art, the utility model has the advantages and positive effects that,
1. in the utility model, the condensation treatment is divided into two sections of condensation processes, namely a pre-cooling section (3-5 ℃) and a first-stage condensation section (20-30 ℃), and after the swept steam (oil gas) enters the evaporative air cooler, the temperature is reduced to 3-5 ℃ through the precooling section, the primary condensation section is reduced to-20-30 ℃, gas and liquid are separated through the steam-water separator, the condensate is boosted through the pump after air cooling and sent to the gas-liquid separator for separation, the separated oily components are sent to a designated tank, the separated water is discharged to a designated oily sewage system of the device and then discharged into the alkali liquor tank.
2. According to the utility model, more than 85% of effective components are liquefied after condensation, the gas phase part enters the VOCs treatment drug absorption tank, the vacuum degree of the vacuum pump is adjusted through the flow of the outlet of the circulating pump, VOCs gas is gradually absorbed into the treatment drug absorption tank, the gas is absorbed and purified through the adsorbent, odorless purified gas is discharged into the atmosphere, meanwhile, the residual amount of the VOCs absorbent in the drug absorption tank is replenished when the concentration is less than 10%, and process monitoring is carried out (the temperature, the saturation and the content of the VOCs gas in the purified exhaust gas are sampled and analyzed every 1 hour).
Drawings
FIG. 1 is a structural diagram of a comprehensive treatment device for VOCs in a refinery device according to the present invention;
FIG. 2 is a flow chart of the utility model for a comprehensive treatment device for VOCs in a refinery device.
Illustration of the drawings:
1. an evaporative air cooler; 2. a condensate tank; 3. a drug absorption canister; 4. a steam-water separator; 5. a refrigeration unit; 6. an adsorption unit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-2, the present invention provides a technical solution: a comprehensive treatment device for VOCs of a refining and chemical device is shown in figure 1 and comprises an evaporative air cooler 1, a condensate tank 2, a drug absorption tank 3, a steam-water separator 4 and a condensation adsorption oil-gas recovery device, wherein the evaporative air cooler 1 is communicated with the condensate tank 2 through a pipeline, the condensate tank 2 is communicated with the drug absorption tank 3, the steam-water separator 4 and the condensation adsorption oil-gas recovery system respectively, and the drug absorption tank 3 is communicated with the steam-water separator 4 through a pipeline.
Wherein, the drug absorption tanks 3 are provided with two and two drug absorption tanks 3, and 40% of alkaline water and 35% of deodorant are respectively added in the two drug absorption tanks 3.
Wherein, the internal temperature of the evaporative air cooler 1 is-30-5 ℃ in the operation process.
Wherein, the steam-water separator 4 is communicated with the condensation adsorption oil gas recovery system.
Wherein, the condensing and adsorbing oil recovery system comprises a refrigerating unit 5 and an adsorption unit 6.
The working principle is as follows: the condensation treatment is divided into two-stage condensation process, which is a pre-cooling section (3-5 ℃) and a first-stage condensation section (-20 to-30 ℃). After entering an evaporative air cooler 1, the temperature of the swept steam (oil gas) is reduced to 3-5 ℃ through a precooling section, the temperature of a primary condensing section is reduced to-20 to-30 ℃, gas and liquid are separated through a gas-liquid separator, after air cooling and cooling, condensate is pumped to the gas-liquid separator for separation, the separated oily components are sent to a designated tank, the separated water is discharged to a designated oily sewage system of the device, more than 85 percent of effective components are liquefied after condensation, the gas phase part enters a VOCs treatment drug absorption tank 3, the vacuum degree of a vacuum pump is adjusted through the flow rate of a circulating pump outlet, VOCs gas is sucked into the treatment drug absorption tank 3 step by step, the gas is absorbed and purified through an adsorbent, odorless purified gas is discharged into the atmosphere, meanwhile, the residual amount of a VOCs absorbent in the drug absorption tank 3 is supplemented when the concentration is less than 10 percent, process monitoring was performed (absorption liquid temperature, saturation, purified exhaust gas VOCs gas content were sampled every 1 hour).
Example 1:
the device need carry out VOC treatment construction to some equipment at the burning stage, with burnt gas pitcher drain line DN65, E120 burnt ware cooler liquid phase row congeals pipeline DN50, gaseous phase discharge port DN200 and be connected to VOC treatment equipment entry, specific flow is as shown in figure 2:
1) the VOCs treatment skid-mounted equipment is placed on the horizontal hard ground on site, is connected with a power supply with 380V and 100A temporary power consumption, checks whether each wiring and connecting pipe are correct, enables the equipment to be in a normal use state, and completes the pressure test and leakage test of the treatment equipment;
(2) the treatment process adopts an integrated process of water absorption, drug absorption, steam-water separation, condensation, oil-gas capture and two-stage adsorption;
(3) adding 40% of alkaline water into the medicine absorption tank 3, and adding 30-35% of deodorant into the other medicine absorption tank 3;
(4) the device is additionally provided with a blind plate for isolation on the equipment which is not managed, so that the normal use of an equipment emptying valve and a safety accessory is ensured;
(5) before purging the device, connecting a temporary pipeline according to a determined process flow to connect a purging discharge point of the device to VOCs treatment equipment, feeding burnt gas condensate of the equipment to be treated into a wet air cooler through a burnt gas tank evacuation line DN65 and an E120 burnt cooler liquid phase condensate discharge line DN50, then feeding the burnt gas condensate into a condensate tank 2, leading the condensate tank 2 to be evacuated from the bottom to a neutralization tank by a pneumatic pump, feeding burnt gas phase of the equipment to be treated into the wet air cooler through an E120 gas phase discharge port DN200, then feeding the burnt gas phase into the condensate tank 2, leading the condensate tank 2 to be evacuated from the bottom to the neutralization tank by the pneumatic pump, discharging the neutralized tank to an alkali liquor tank (DN80), leading non-condensed gas at the top of the two condensate tanks 2 to a medicament absorption prying tank, firstly passing through an alkali liquor absorption tank, then passing through a deodorant tank, then entering a condensation adsorption equipment through a liquid separation tank, then leading the gas phase to the discharge port to the upper part of a platform, and installing a pressure gauge at a phase outlet, keeping the pressure below 0.4 MPa;
(6) and starting each device of the treatment unit, and observing the pressure change and the exhaust volume at the inlet of the treatment device.
(7) VOCs treatment process:
burnt gas tank evacuation line DN65, E120 burnt gas cooler liquid phase condensation discharge line DN50 → temporary line → air cooling → condensate tank 2 → medicament absorption pry → skid-mounted treatment equipment (condensation + adsorption) → temporary line → atmosphere E120 gas phase discharge port DN200 → temporary line → air cooling → condensate tank 2 → medicament absorption pry → skid-mounted treatment equipment (condensation + adsorption) → temporary line → atmosphere
(8) Introduction to condensation adsorption treatment
The condensation treatment is divided into two condensation processes, namely a pre-cooling section (3-5 ℃) and a primary condensation section (30-35 ℃), wherein the purge gas enters the evaporative air cooler 1, the temperature of the purge gas is reduced to 3-5 ℃ through the pre-cooling section, the temperature of the purge gas is reduced to-30-35 ℃ through the primary condensation section, little condensate is discharged to a ton barrel at regular time.
The amount of purging is adjusted according to the effect of the condensation process and the cooling load of the cooling equipment.
(9) Adsorption treatment
More than 85% of the effective components are liquefied after condensation, the gas phase part enters the VOCs treatment drug absorption tank 3, the vacuum degree of the vacuum pump is adjusted through the flow of the outlet of the circulating pump, VOCs gas is sucked into the treatment drug absorption tank 3 step by step, the gas is absorbed and purified through the adsorbent, odorless purified gas is discharged into a large space through a square tube frame pipeline, and the process monitoring is carried out (the VOCs gas content of the purified exhaust gas is sampled and analyzed every 1 hour).
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.
Claims (5)
1. The comprehensive treatment device for the VOCs of the refining and chemical device comprises an evaporative air cooler (1), a condensate tank (2), a drug absorption tank (3), a steam-water separator (4) and a condensation adsorption oil-gas recovery device, and is characterized in that the evaporative air cooler (1) is communicated with the condensate tank (2) through a pipeline, the condensate tank (2) is communicated with the drug absorption tank (3), the steam-water separator (4) and the condensation adsorption oil-gas recovery system respectively, and the drug absorption tank (3) is communicated with the steam-water separator (4) through a pipeline.
2. The comprehensive treatment device for VOCs of refining units according to claim 1, characterized in that: the drug absorption tanks (3) are provided with two drugs, and 40% of alkaline water and 35% of deodorant are respectively added into the two drug absorption tanks (3).
3. The comprehensive treatment device for VOCs of refining units according to claim 1, characterized in that: the internal temperature of the evaporative air cooler (1) is-30-5 ℃ in the operation process.
4. A refinery unit VOCs comprehensive treatment device according to claim 3, wherein: the steam-water separator (4) is communicated with the condensation adsorption oil-gas recovery system.
5. The comprehensive treatment device for VOCs of refining units according to claim 1, characterized in that: the condensed adsorption oil recovery system comprises a refrigerating unit (5) and an adsorption unit (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121927616.5U CN215996124U (en) | 2021-08-17 | 2021-08-17 | Device is administered in synthesis of refining device VOCs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121927616.5U CN215996124U (en) | 2021-08-17 | 2021-08-17 | Device is administered in synthesis of refining device VOCs |
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| Publication Number | Publication Date |
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| CN215996124U true CN215996124U (en) | 2022-03-11 |
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| CN202121927616.5U Active CN215996124U (en) | 2021-08-17 | 2021-08-17 | Device is administered in synthesis of refining device VOCs |
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2021
- 2021-08-17 CN CN202121927616.5U patent/CN215996124U/en active Active
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