CN204903499U - A safe preprocessing device for volatile organic compounds administers - Google Patents
A safe preprocessing device for volatile organic compounds administers Download PDFInfo
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- CN204903499U CN204903499U CN201520609163.XU CN201520609163U CN204903499U CN 204903499 U CN204903499 U CN 204903499U CN 201520609163 U CN201520609163 U CN 201520609163U CN 204903499 U CN204903499 U CN 204903499U
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Abstract
The utility model relates to a safe preprocessing device for volatile organic compounds administers mainly solves the big problem of potential safety hazard among the prior art. The utility model discloses an adopt a safe preprocessing device for volatile organic compounds administers, including gas mixing room, governing valve, online concentration analyzer, be equipped with dilution air entry pipeline, gaseous pipeline, the gaseous air inlet machine pipeline of volatile organic compounds of getting into of volatile organic compounds on the gas mixing room, be equipped with the governing valve on the dilution air inlet tube line, governing valve passing signal line links to each other with the temperature measurement equipment of low temperature catalytic oxidation bed export, connect online concentration analyzer's technical scheme to solve above -mentioned problem on the gaseous admission pipe line of volatile organic compounds betterly, can be used to in the volatile organic compounds improvement.
Description
Technical field
The utility model relates to a kind of Safety Pre treating apparatus administered for volatile organic matter.
Background technology
The Treatment process of current volatile organic matter (VOCs) mainly contains two classes: a class is recovery technology, and a class is destroy technology.Recovery technology is the method by physics, such as, change temperature, pressure or take the method for the method such as selective absorbent and permoselective membrane concentration and separation organic vapors pollutant, mainly contain adsorption technology, absorption techniques, condensation technology and membrane separation technique.Destroy technology is mainly through chemistry or biochemical projection, with heat, light, catalyzer and microorganism, organic compound is changed into the inorganic molecules compound of the nonhazardous such as carbon dioxide and water or low murder by poisoning, mainly contain direct combustion method, catalytic combustion, bio-oxidation, photochemical catalytic oxidation, plasma destruction etc.
The VOCs gas that recovery technology is higher mainly for concentration or economic worth is high reclaims, and the requirement that can meet national environmental standard in some field directly enters in air.And destroy technology is when mainly cannot reach standard-required for recovery technology and the VOCs Treatment process taked." discharge standard of air pollutants " requires non-methane hydrocarbon emission concentration≤120mg/m
3, some regional provincial standards require non-methane hydrocarbon emission concentration≤80mg/m
3, suggestions such as " petro chemical industry pollutant emission standards " solicits original text requirement benzene discharge index≤1mg/m
3, recovery technology is to reach above standard, then technology is very difficult on realizing, and need reach standard further in conjunction with destroy technology.
But direct combustion method operating temperature is up to 800 DEG C in current destroy technology, and equipment cost is high, in refining enterprise application process, there is potential safety hazard; The organic contaminant occasion that major part catalytic combustion technology is not suitable with for high concentration need carry out pre-service, and because catalyst operating temperature is substantially at about 400 DEG C, higher than most of organism initiation temperature, also there is the danger of blast on using.If carry out dilution pre-service to organic contaminant, then the heat temperature raising of air is needed to the heat energy (electrical heating or fuel heating) of at substantial, in the VOCs of Wind Volume/low concentration administers, operating cost is too high, causes energy dissipation.
Utility model content
Technical problem to be solved in the utility model is the problem that in prior art, potential safety hazard is large, provides a kind of Safety Pre treating apparatus administered for volatile organic matter newly.This device is used for during volatile organic matter administers, having without potential safety hazard, initiation temperature is low, energy consumption is little advantage.
For solving the problem, the technical solution adopted in the utility model is as follows: a kind of Safety Pre treating apparatus administered for volatile organic matter, comprise gas mixer chamber, variable valve, online concentration analyzer, it is characterized in that gas mixer chamber is provided with diluent air source line, volatile organic matter gas enters pipeline, volatile organic matter gas air inlet fan pipeline, diluent air source line is provided with variable valve, the temperature measurement equipment that variable valve is exported by signal wire and low-temperature catalytic oxidation bed is connected, described volatile organic matter gas enters on pipeline and is connected to online concentration analyzer.
This patent, under the effect of pretreatment system and online concentration analyzer, remains that the concentration of mixed gas is in the scope of the lower limit 25% of explosion limits; Do not take pretreated direct burning and other catalytic oxidation technologies securities higher, achieve good technique effect.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of device described in the utility model.
Fig. 2 is pretreatment system schematic flow sheet.
In Fig. 1, Fig. 2,1 is VOCs high concentration treating apparatus; 2 is Safety Pre treating apparatus; 3 is blower fan; 4 is variable valve; 5 is diluent air pipeline; 6 is heating chamber; 7 is low-temperature catalytic oxidation layer; 8 is high-temperature S removal layer; 10 is online concentration analyzer; 11 is chimney; 12 is rotary type honeycomb ceramic heat accumulator; 2a is the variable valve on diluent air pipeline 5; 2b is gas mixer chamber, and 2c is mixed gas air inlet fan pipeline; 2d is VOCs gas inlet pipeline.
Below by embodiment, the utility model is further elaborated, but is not limited only to the present embodiment.
Embodiment
[embodiment 1]
A kind of Safety Pre treating apparatus administered for volatile organic matter, as shown in Figure 2, comprise gas mixer chamber, variable valve, online concentration analyzer, it is characterized in that gas mixer chamber is provided with diluent air source line, volatile organic matter gas enters pipeline, volatile organic matter gas air inlet fan pipeline, diluent air source line is provided with variable valve, the temperature measurement equipment that variable valve is exported by signal wire and low-temperature catalytic oxidation bed is connected, and described volatile organic matter gas enters on pipeline and is connected to online concentration analyzer.
Adopt device as shown in Figure 1 to carry out VOCs gas recycling and administration, flow process is moved towards: VOCs high concentration retracting device → Safety Pre treating apparatus → blower fan → rotary type honeycomb ceramic heat accumulator cold journey → well heater → low-temperature catalytic oxidation bed → hot journey → chimney of high-temperature S removal bed → rotary type honeycomb ceramic heat accumulator.
VOCs high concentration retracting device can be adsorption system, condensate recovery system, film separation system etc., is mainly used in reclaiming concentration and reaches 100g/m
3~ 1000g/m
3above high concentration VOCs gas.Safety Pre treating apparatus (as shown in Figure 2) is made up of the control valve (2a) on diluent air pipeline and gas mixer chamber (2b), be mainly used in the VOCs gas diluting low concentration, its concentration is down in the safe range of low-temperature catalytic oxidation device use.By variable frequency work, blower fan remains that its blower fan leading inlet is in the working range of pressure-fired.Variable valve (4) for regulating gas temperature in export pipeline after heat interchanger, and coordinates with well heater gas in pipeline was in rational working range before entering low-temperature catalytic oxidation bed; Low-temperature catalytic oxidation layer, high-temperature S removal layer, rotary type honeycomb ceramic heat accumulator eliminate VOCs gas for purifying, and make its concentration be down to needed for below the standard-required that reaches; Online concentration analyzer is for monitoring supplied materials gas concentration, catalytic oxidation front reaction concentration and escape hole concentration; System detects the concentration of the system of entering, temperature and fluctuations in discharge situation in real time, and online concentration analyzer measures explosion-proof fan front and back ends concentration levels in real time.When blower fan rear end VOCs concentration higher than lower explosive limit 25% time, then the control valve (2a) of pretreatment system strengthens dilution dynamics, its concentration is down in less than 25% of lower explosive limit, low-temperature catalytic oxidation system is within safe operating range all the time.Chimney is mainly used in emission compliance gas; Rotary type honeycomb ceramic heat accumulator can be divided into different bin, and heat storage drives lower rotation by rotary motor.The heat storage of mixed gas first in the bin of accumulation of heat, thus the heat taking away heat storage reaches required catalytic temperature; Heat storage simultaneously in other bins is for reclaiming the heat of high temperature purification gas.
Power-supply unit mainly blower fan and well heater in system, in addition respective line and equipment are provided with temperature, flow, pressure and Concentration Testing transmitter, each detection signal and control variable are collected and are entered PLC (programmable logic controller (PLC)) control system, and control whole system by monitoring computer and run.By monitoring computer startup optimization system, first well heater starts working, and when well heater reaches the temperature of default, explosion-proof fan is started working, and VOCs gas enters low-temperature catalytic oxidation governing system by front end high concentration retracting device.
Monitoring computer monitors VOCs gas temperature after rotary type honeycomb ceramic heat accumulator in real time simultaneously, and when temperature is temperature required lower than low-temperature catalytic oxidation bed, well heater is started working; When temperature is higher than low-temperature catalytic oxidation bed temperature, variable valve (4) regulates aperture in real time, reduces VOCs gas temperature, makes in its operating temperature range maintained required for low-temperature catalytic oxidation bed; VOCs gas is after low-temperature oxidation bed, and the VOCs gas of more than 90% is broken down into CO in low-temperature catalytic oxidation bed
2and H
2o, simultaneously releases heat enter high-temperature S removal bed, simultaneously when now gas temperature is higher, pretreatment system increases dilution dynamics, reduces VOCs gaseous combustion temperature; Fill in high-temperature S removal bed and be different from the high temperature catalyst that the precious metals pt of low-temperature catalytic oxidation bed etc. is representative, required for this catalyzer, working temperature is temperature required higher than low-temperature catalytic oxidation bed.Residue small part VOCs gas resolves into CO further in this interval
2and H
2o, releases heat enters rotary type honeycomb ceramic heat accumulator simultaneously, and in rotary type honeycomb ceramic heat accumulator, further high-temp combustion, reaches the treatment effeciency of more than 99%.
To process the oil gas of gasoline volatilization, inlet concentration is 60g/m
3normal temperature petrol gas, after system pre-service, concentration dilution is 6g/m
3(25% of the lower limit of explosion limits is 9.4g/m
3), lower than explosion limits lower limit 25%, after the heat exchange of rotary type honeycomb ceramic heat accumulator, temperature is increased to about 230 DEG C, and now well heater quits work, after the process of low-temperature catalytic oxidation bed, high-temperature S removal bed and ceramic heat storage body, exit concentration can reach 80mg/m
3below, treatment effeciency reaches more than 99%.
Realize uniting two into one of accumulation of heat and heat exchange by airtight rotary type honeycomb ceramic heat accumulator, which can improve heat exchange efficiency, improves heat storage capacity.By the rotation motor of rotary type honeycomb ceramic heat accumulator, drive heat accumulator rotary.When a certain heat storage of rotary type heat storage uses as heat accumulation function, not only can purifying VOCs gas further, and can accumulation of heat be carried out, carry out heat recovery utilization; Now another heat storage accumulation of heat complete waiting system heat exchange; And also have a heat storage to heat to supplied materials VOCs gas.
Claims (1)
1. the Safety Pre treating apparatus administered for volatile organic matter, comprise gas mixer chamber, variable valve, online concentration analyzer, it is characterized in that gas mixer chamber is provided with diluent air source line, volatile organic matter gas enters pipeline, volatile organic matter gas air inlet fan pipeline, diluent air source line is provided with variable valve, the temperature measurement equipment that variable valve is exported by signal wire and low-temperature catalytic oxidation bed is connected, and described volatile organic matter gas enters on pipeline and is connected to online concentration analyzer.
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| CN201520609163.XU CN204903499U (en) | 2015-08-13 | 2015-08-13 | A safe preprocessing device for volatile organic compounds administers |
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| CN201520609163.XU CN204903499U (en) | 2015-08-13 | 2015-08-13 | A safe preprocessing device for volatile organic compounds administers |
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| CN204903499U true CN204903499U (en) | 2015-12-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107489883A (en) * | 2017-10-13 | 2017-12-19 | 中石化炼化工程（集团）股份有限公司 | Petroleum chemical enterprise VOCs collection and carrying method and centralized processing system |
-
2015
- 2015-08-13 CN CN201520609163.XU patent/CN204903499U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107489883A (en) * | 2017-10-13 | 2017-12-19 | 中石化炼化工程（集团）股份有限公司 | Petroleum chemical enterprise VOCs collection and carrying method and centralized processing system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Lin Inventor after: Yin Shumeng Inventor after: Dan Xiaowen Inventor before: Wang Lin Inventor before: Yin Shumeng Inventor before: Dan Xiaowen |