CN215654571U - Organic gas normal-temperature efficient vacuum desorption system - Google Patents
Organic gas normal-temperature efficient vacuum desorption system Download PDFInfo
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- CN215654571U CN215654571U CN202122161650.2U CN202122161650U CN215654571U CN 215654571 U CN215654571 U CN 215654571U CN 202122161650 U CN202122161650 U CN 202122161650U CN 215654571 U CN215654571 U CN 215654571U
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Abstract
The utility model relates to an organic gas normal-temperature efficient vacuum desorption system, which is scientific and reasonable in design, realizes efficient desorption of organic gas by utilizing a two-layer activated carbon filling structure and an inner fin secondary condenser arranged in a carbon adsorption tank, has simple process and small occupied area, can save about 3 tons of water vapor every day compared with 100 ℃ high-temperature water vapor desorption, does not generate waste water in the whole process, and is energy-saving and environment-friendly; because high temperature is not involved, the granular carbon has no ignition hidden trouble and has better safety; in addition, the normal-temperature vacuum desorption system is anhydrous in the whole process, and the granular carbon cannot be pulverized, so that the service life of the granular carbon is prolonged and can be as long as more than 10 years, and the normal-temperature vacuum desorption system is suitable for conversion, popularization and application.
Description
Technical Field
The utility model belongs to the field of environmental engineering, relates to an organic gas treatment technology, and particularly relates to a normal-temperature high-efficiency vacuum desorption system for organic gas.
Background
The technologies for recovering organic gas in the prior art are mainly common in direct cryogenic technology and activated carbon adsorption technology:
the direct cryogenic technology needs an organic gas recovery device to operate at a temperature of 73 ℃ below zero to 114 ℃ below zero, the requirement on equipment materials is high, the occupied area is large, the energy consumption is extremely high, the investment and operation cost is high, and the technology is almost eliminated in developed countries.
The activated carbon adsorption technology mainly adopts water vapor analysis, the energy consumption is high, waste water is generated in the analysis process, the service life of the activated carbon adsorption material is limited, generally about 1-2 years, dangerous waste treatment is needed after the activated carbon adsorption material is replaced, and high dangerous waste disposal cost is generated.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art, and provides the organic gas normal-temperature high-efficiency vacuum desorption system which can realize continuous treatment of oil gas at normal temperature, greatly reduces the running energy consumption of the system, has the energy consumption of only 0.1-0.18 kilowatt hour for treating each cubic meter of oil gas, and has the advantages of simple and convenient operation, high running temperature and high safety.
The technical problem to be solved by the utility model is realized by adopting the following technical scheme:
the utility model provides an organic gas normal atmospheric temperature high-efficient vacuum desorption system, fin secondary condenser, vapour and liquid separator, solvent storage tank and solvent pump in including granular carbon adsorption jar, dry-type oilless vacuum pump, high efficiency, granular carbon adsorption jar entry be connected with the tail gas vent, the analytic gas outlet of granular carbon adsorption jar links to each other with the dry-type oilless vacuum pump entry, fin secondary condenser entry links to each other in dry-type oilless vacuum pump export and the high efficiency, fin secondary condenser export links to each other with vapour and liquid separator entry in the high efficiency, the export of vapour and liquid separator links to each other with the storage tank entry, the export of solvent storage tank links to each other with the solvent pump entry, the noncondensable gas outlet of vapour and liquid separator and solvent storage tank is connected to the waste gas inlet of granular carbon adsorption jar.
The innovation of the technical scheme is as follows: the granule carbon adsorption jar is vertically provided with two-layer active carbon filling structure in the jar, and nearly granule carbon adsorption jar inlet end is filled and is provided with the coal column activated carbon layer that carbon tetrachloride adsorption value is 40, and nearly granule carbon adsorption jar is analyzed the gas outlet end and is filled and be provided with the coal column activated carbon layer that carbon tetrachloride adsorption value is 60.
The layered mixed filling structure can save equipment cost, reduce the replacement cost of auxiliary materials, and only need to replace the activated carbon at the tail gas inlet side when encountering high-boiling residues at ordinary times.
In addition, high-efficient interior fin secondary condenser constitute by a plurality of unit condenser tubes, this unit condenser tube is inside to be radial distribution by the tube core and is connected with a plurality of fins, high-efficient interior fin secondary condenser and solvent storage tank all be provided with and put clean export, high-efficient interior fin secondary condenser be equipped with circulating water and low-temperature water respectively and advance, export.
Adopt high-efficient interior fin secondary condenser, heat exchanger inside arranges a plurality of fins of rule, and heat exchange efficiency is 4 times of conventional tubulation, and the windage is equivalent with conventional tubulation, but heat transfer area only needs the fourth of conventional tubulation, can reach the equal condensation effect with conventional tubulation condenser.
The utility model has the advantages and positive effects that:
the utility model has scientific and reasonable design, realizes the high-efficiency desorption of organic gas by utilizing the two-layer active carbon filling structure and the inner fin secondary condenser arranged in the carbon adsorption tank, has simple process and small occupied area, can save about 3 tons of water vapor every day compared with the resolution of 100 ℃ high-temperature water vapor, does not generate waste water in the whole process, and is energy-saving and environment-friendly; because high temperature is not involved, the granular carbon has no ignition hidden trouble and has better safety; in addition, the normal-temperature vacuum desorption system is anhydrous in the whole process, and the granular carbon cannot be pulverized, so that the service life of the granular carbon is prolonged and can be as long as more than 10 years, and the normal-temperature vacuum desorption system is suitable for conversion, popularization and application.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic cross-sectional view of a unit condenser tube in the high-efficiency inner fin secondary condenser.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments, which are illustrative only and not limiting, and the scope of the present invention is not limited thereby.
The utility model provides an organic gas normal atmospheric temperature high-efficient vacuum desorption system, as shown in figure 1, fin secondary condenser 3, vapour and liquid separator 5, solvent storage tank 6 and solvent pump 7 in including granule carbon adsorption jar 1, dry-type oilless vacuum pump 2, high-efficient, granule carbon adsorption jar entry and tail gas vent are connected, the analytic gas outlet of granule carbon adsorption jar links to each other with the dry-type oilless vacuum pump entry, the dry-type oilless vacuum pump export links to each other with fin secondary condenser entry in the high-efficient, fin secondary condenser export links to each other with the vapour and liquid separator entry in the high-efficient, the export of vapour and liquid separator links to each other with the storage tank entry, the export of solvent storage tank links to each other with the solvent pump entry, the noncondensable gas outlet of vapour and liquid separator and solvent storage tank is connected to the waste gas inlet of granule carbon adsorption jar.
Two layers of activated carbon filling structures are longitudinally arranged in the granular carbon adsorption tank, a coal columnar activated carbon layer 1-1 with a carbon tetrachloride adsorption value of 40 is filled at the inlet end of the granular carbon adsorption tank, and a coal columnar activated carbon layer 1-2 with a carbon tetrachloride adsorption value of 60 is filled at the desorption gas outlet end of the granular carbon adsorption tank.
And the efficient inner fin secondary condenser and the solvent storage tank are both provided with a discharge outlet.
The efficient inner fin secondary condenser consists of a plurality of unit condenser pipes 4, and as shown in fig. 2, a plurality of fins 4-1 are radially distributed and connected in the unit condenser pipes by pipe cores.
The efficient inner fin secondary condenser is provided with a circulating water inlet and a low-temperature water outlet respectively, and a cold source of the efficient inner fin secondary condenser is circulating water and low-temperature water.
The desorption process of the dry type oilless vacuum pump in the system is divided into two processes: vacuum decompression and resolution and organic solvent discharge.
Firstly, a vacuum decompression analysis process: in the vacuum desorption process, a dry type oilless vacuum pump is adopted to carry out vacuumizing decompression analysis on the particle carbon tank from two positions with different heights.
The carbon tank is required to be vacuumized to a negative pressure lower than 80KPa in the particle carbon tank vacuumizing process, the vacuumizing time is about 20min, VOCs adsorbed on the surface of the particle carbon are desorbed, and the high-concentration VOCs are pumped to the efficient inner fin secondary condenser through the dry vacuum pump to be condensed and cooled.
Discharging the organic solvent: the condensed VOCS enters a solvent storage tank, accumulates to a certain liquid level, sets the liquid level high limit to be 500mm, starts a solvent pump, directly pumps away the collected solvent through the solvent pump, and stops the solvent pump when the liquid level is as low as 150mm and starts the solvent pump intermittently; in addition, the non-condensable gas in the gas-liquid separator and the storage tank is led back to the inlet of the induced draft fan.
Although the embodiments of the present invention and the accompanying drawings are disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the utility model and the appended claims, and therefore the scope of the utility model is not limited to the disclosure of the embodiments and the accompanying drawings.
Claims (5)
1. The utility model provides an organic gas normal atmospheric temperature high-efficient vacuum desorption system which characterized in that: including granule carbon adsorption tank, dry-type oil-free vacuum pump, high-efficient interior fin secondary condenser, vapour and liquid separator, solvent storage tank and solvent pump, granule carbon adsorption tank entry be connected with the tail gas vent, the analytic gas outlet of granule carbon adsorption tank links to each other with dry-type oil-free vacuum pump entry, fin secondary condenser entry links to each other in dry-type oil-free vacuum pump outlet and the high-efficient, fin secondary condenser export links to each other with vapour and liquid separator entry in the high-efficient, the export of vapour and liquid separator links to each other with the storage tank entry, the export of solvent storage tank links to each other with the solvent pump entry, the noncondensable gas outlet connection of vapour and liquid separator and solvent storage tank to the waste gas inlet of granule carbon adsorption tank.
2. The normal-temperature high-efficiency vacuum desorption system for organic gas according to claim 1, which is characterized in that: the granule carbon adsorption jar is vertically provided with two-layer active carbon filling structure in the jar, and nearly granule carbon adsorption jar inlet end is filled and is provided with the coal column activated carbon layer that carbon tetrachloride adsorption value is 40, and nearly granule carbon adsorption jar is analyzed the gas outlet end and is filled and be provided with the coal column activated carbon layer that carbon tetrachloride adsorption value is 60.
3. The normal-temperature high-efficiency vacuum desorption system for organic gas according to claim 1, which is characterized in that: the efficient secondary condenser with the inner fins is composed of a plurality of unit condenser pipes, and a plurality of fins are radially distributed and connected in the unit condenser pipes by pipe cores.
4. The normal-temperature high-efficiency vacuum desorption system for organic gas according to claim 1 or 3, which is characterized in that: and the efficient inner fin secondary condenser and the solvent storage tank are both provided with a discharge outlet.
5. The normal-temperature high-efficiency vacuum desorption system for organic gas according to claim 4, which is characterized in that: the high-efficiency inner fin secondary condenser is respectively provided with a circulating water inlet and a low-temperature water outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122161650.2U CN215654571U (en) | 2021-09-08 | 2021-09-08 | Organic gas normal-temperature efficient vacuum desorption system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122161650.2U CN215654571U (en) | 2021-09-08 | 2021-09-08 | Organic gas normal-temperature efficient vacuum desorption system |
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| Publication Number | Publication Date |
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| CN215654571U true CN215654571U (en) | 2022-01-28 |
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| CN202122161650.2U Active CN215654571U (en) | 2021-09-08 | 2021-09-08 | Organic gas normal-temperature efficient vacuum desorption system |
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