CN208349314U - A kind of docking safety device for VOCs processing - Google Patents
A kind of docking safety device for VOCs processing Download PDFInfo
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- CN208349314U CN208349314U CN201820674608.6U CN201820674608U CN208349314U CN 208349314 U CN208349314 U CN 208349314U CN 201820674608 U CN201820674608 U CN 201820674608U CN 208349314 U CN208349314 U CN 208349314U
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Abstract
The utility model discloses a kind of docking safety devices for VOCs processing, comprising: gas mixing tank is equipped with the first oxygen conten analyser for detecting oxygen content inside the gas mixing tank at the gas mixing tank；Gas inlet pipeline, the inside of the connection of gas inlet pipeline the VOCs collection device and the gas mixing tank；Source nitrogen is connected to by nitrogen pipeline, the nitrogen pipeline with the gas inlet pipeline, and nitrogen valve is equipped at the nitrogen pipeline；Exhaust gas outlet pipe road, the exhaust gas outlet pipe road is respectively communicated with the inside of torch pipe network Yu the gas mixing tank, pressure-regulating valve and differential pressure transmitter are equipped at the exhaust gas outlet pipe road, the differential pressure transmitter is connect between the pressure-regulating valve and gas mixing tank and with the pressure-regulating valve.The utility model can control the oxygen content and pressure of the VOCs exhaust gas being passed through in torch pipe network, guarantee that mixed gas is not easy to explode because encountering Mars in flare system.
Description
Technical field
The utility model relates to VOCs treatment process technical field more particularly to a kind of docking safety for VOCs processing
Device.
Background technique
With volatile organic matter, the post-processing of abbreviation VOCs, VOCs are in industrial waste gas improvement increasingly by weight
Depending on.After the non-methane hydrocarbon emission limitation of milligram grade has been put into effect in various regions in succession (such as: Beijing < 100mg/m3, Shanghai <
70mg/m3), traditional VOCs complete recovering technique route using " renewable absorption " as latter end technique has been difficult long-term, steady
Determine, continuously meet emission request.Therefore, the process combination using the method for destroying as latter end will become the main of VOCs administration project
Selection.
Compared with VOCs recovery processing, destruction method is difficult to generate direct economic benefit, and scale of investment and operating cost
Also relatively high, these are all that destruction method is difficult the reason of promoting when environmental protection standard is more loose.But completely match for possessing
The large and medium-sized chemical company for covering facility, if existing burner, such as torch can be utilized under the premise of guaranteeing safety
System burns VOCs exhaust gas, then the cost of investment of newly added equipment, and hardly newly-increased energy consumption can be greatly reduced.
VOCs exhaust gas enters the key problem that flare system is burnt and is safety.In view of being mixed in flare system
The explosion limit of gas needs the oxygen content of the VOCs exhaust gas for being newly incorporated to torch pipe network strictly to be limited with indexs such as pressure
System, therefore, the prior art are badly in need of a kind of safety device for being sent into the oxygen content and pressure of torch pipe network for controlling VOCs exhaust gas.
Summary of the invention
The purpose of the utility model is to provide a kind of docking safety devices for VOCs processing, can control and be passed through torch
The oxygen content and pressure of VOCs exhaust gas in pipe network guarantee that mixed gas is not easy to explode because encountering Mars in flare system.
The technical scheme that the utility model is provided is as follows:
A kind of docking safety device for VOCs processing, comprising: gas mixing tank is equipped at the gas mixing tank and uses
In the first oxygen conten analyser for detecting oxygen content inside the gas mixing tank；Gas inlet pipeline, the exhaust inlet pipe
The inside of road connection VOCs collection device and the gas mixing tank；Nitrogen pipeline, the nitrogen pipeline by source nitrogen with it is described
Gas inlet pipeline is connected to, and nitrogen valve is equipped at the nitrogen pipeline；Exhaust gas outlet pipe road, the exhaust gas outlet pipe road difference
It is connected to the inside of torch pipe network and the gas mixing tank, is equipped with pressure-regulating valve and differential pressure transporting at the exhaust gas outlet pipe road
Device, the differential pressure transmitter are connect between the pressure-regulating valve and gas mixing tank and with the pressure-regulating valve.
In above structure, by the first oxygen conten analyser being set on gas mixing tank, can real-time detection to gas
The oxygen content of mixed gas in body blending tank can then open nitrogen tube when the oxygen content detected is more than default content
Nitrogen valve on road mixes nitrogen with VOCs exhaust gas, to reduce the oxygen content of the mixed gas in gas mixing tank, protects
The oxygen content for the mixed gas being passed through in torch pipe network is demonstrate,proved lower than 2%, and then guarantees the safety at flare system.By useless
Differential pressure transmitter is set at gas outlet pipe, for detecting the pressure of the mixed gas at exhaust gas outlet pipe road, if mixed gas
Hypertonia when, pressure is adjusted by pressure-regulating valve, the pressure of mixed gas is adjusted to desired value and is delivered to torch again
At pipe network.
The second oxygen content being preferably located at the gas inlet pipeline between the VOCs collection device and nitrogen pipeline
Analyzer.
Simultaneously by the first oxygen conten analyser and the second oxygen conten analyser respectively to gas mixing tank and gas inlet
Oxygen content in pipeline is detected, then is determined to be passed through nitrogen in such a way that two select two or be led to the oxygen content result of detection
Enter the amount of nitrogen, guarantee that the oxygen content for the mixed gas being passed through in torch pipe network meets the requirements, avoids causing safety accident.
Preferably, the docking safety device for VOCs processing further include: Control for Oxygen Content system, the oxygen content
Control system is connect with first oxygen conten analyser, the second oxygen conten analyser and nitrogen valve respectively.
By setting Control for Oxygen Content system to the first oxygen conten analyser, the second oxygen conten analyser and nitrogen valve into
Row is uniformly controlled, and without manually operating from side, conveniently and saves human cost.Control for Oxygen Content system is received from the first oxygen
With the oxygen content at the second oxygen conten analyser at content analyzer, the opening of nitrogen valve is controlled according to the actual situation, is closed
Or its aperture, guarantee that the intracorporal oxygen content of gaseous mixture reaches the standard that can be passed through torch pipe network, i.e. whether oxygen content is less than
2%, to be further ensured that the safety at flare system.
Preferably, the docking safety device for VOCs processing further include: demister, the demister are set to institute
It states in gas mixing tank.
Portion in above structure, since the temperature of nitrogen is lower, after nitrogen is mixed with VOCs exhaust gas, in VOCs exhaust gas
Divide volatile organic matter that may condense, therefore, demister is set at gas mixing tank, removes waving for the interior condensation of mixed gas
Hair property organic matter, to avoid free property liquid occur in useless pipeline.
Preferably, the docking safety device for VOCs processing further include: be set on the gas mixing tank
Fluid level transmitter；Drain pipe, the drain pipe are connected to the bottom of the gas mixing tank, and drain is equipped at the drain pipe
Valve, the tapping valve are connect with the fluid level transmitter.
In above structure, pass through the liquid of the volatile organic matter of the condensation in setting fluid level transmitter detection gas blending tank
Position height guarantees that the liquid level in gas mixing tank is lower than the 40% of gas mixing tank height, if liquid level is higher than 40%,
Tapping valve is then opened, the volatile organic matter of the condensation in gas mixing tank is discharged, otherwise easily causes entrained liquid, increase removes
The load of day with fog.
Preferably, the docking safety device for VOCs processing further include: connect with the inside of the gas mixing tank
Logical emergency blow-down pipeline is equipped with stop valve for the internal gas of gas mixing tank to be discharged at the emergency blow-down pipeline.
When differential pressure transmitter detect mixed gas pressure it is too high and be more than safe pressure when, pass through open stop valve will
The inside of gas mixing tank is connected to outside, carries out pressure release to gas mixing tank, avoids that safety accident occurs.
Preferably, the stop valve is connect with the differential pressure transmitter.
By the way that differential pressure transmitter to be connect with stop valve, it can detect that the pressure of mixed gas is higher than in differential pressure transmitter
When safe pressure, signal is sent to stop valve automatically, to open stop valve, realizes the releasing pressure automatically of gas mixing tank.
Preferably, at the exhaust gas outlet pipe road be equipped with fire arrester, the fire arrester be set to the differential pressure transmitter with
Between torch pipe network.
Fire arrester is used for fiery condition barrier, and more equipment is avoided to be involved by fiery condition.
Preferably, check-valves is equipped at the exhaust gas outlet pipe road, the check-valves is set to the fire arrester and torch
Between pipe network.
Check-valves can prevent the high-enriched organics organic component in torch pipe network from passing back into gas mixing tank.
It is provided by the utility model it is a kind of for VOCs processing docking safety device, can bring it is following the utility model has the advantages that
The utility model devises a kind of safety device that docks being set between VOCs collection device and flare system, uses
It is kept away in the oxygen content and pressure of the VOCs exhaust gas of adjustment VOCs collection device discharge to guarantee the safety at flare system
Exempt from that safety accident occurs.
Detailed description of the invention
Below by clearly understandable mode, preferred embodiment is described with reference to the drawings, the docking to handling for VOCs
Above-mentioned characteristic, technical characteristic, advantage and its implementation of safety device are further described.
Fig. 1 is the structural schematic diagram of the docking safety device for VOCs processing of the utility model.
Drawing reference numeral explanation:
1- gas inlet pipeline, 2- gas mixing tank, 3- nitrogen valve, 4- exhaust gas outlet pipe road, 5- emergency blow-down pipeline,
The first oxygen conten analyser of 6a-, the second oxygen conten analyser of 6b-, 7- Control for Oxygen Content system, 8- differential pressure transmitter, 9- pressure
Regulating valve, 10- fire arrester, 11- check-valves, 12- fluid level transmitter, 13- tapping valve, 14- nitrogen pipeline, 15- demister, 16-
Stop valve, A-VOCs exhaust gas, B- source nitrogen, C- discharge liquor, D- mixed gas.
Specific embodiment
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, attached drawing will be compareed below
Illustrate specific embodiment of the present utility model.It should be evident that the accompanying drawings in the following description is only the one of the utility model
A little embodiments for those of ordinary skill in the art without creative efforts, can also be according to these
Attached drawing obtains other attached drawings, and obtains other embodiments.
To make simplified form, part relevant to the utility model is only schematically shown in each figure, they are simultaneously
Its practical structures as product is not represented.
[embodiment 1]
As shown in Figure 1, embodiment 1 discloses a kind of docking safety device for VOCs processing, it is set to VOCs collection
Between device and flare system, for adjusting oxygen content and pressure when VOCs exhaust gas A is passed through the torch pipe network of flare system, have
Body includes:
Gas mixing tank 2 is equipped with the oxygen for the mixed gas D inside detection gas blending tank 2 at gas mixing tank 2
First oxygen conten analyser 6a of content.
Gas inlet pipeline 1, the gas inlet pipeline 1 is by the waste gas outlet of VOCs collection device and gas mixing tank 2
Inside connection, for the VOCs exhaust gas A come out from waste gas outlet to be passed through in gas mixing tank 2.
Nitrogen pipeline 14, source nitrogen B is connected to by nitrogen pipeline 14 with gas inlet pipeline 1, and is equipped at nitrogen pipeline 14
Nitrogen valve 3, when nitrogen valve 3 is opened, the nitrogen of source nitrogen B is passed through in gas inlet pipeline 1 by nitrogen pipeline 14,
Nitrogen is mixed with VOCs exhaust gas A, and is entered gas mixing tank 2 together.
Exhaust gas outlet pipe road 4, exhaust gas outlet pipe road 4 are respectively communicated with the inside of torch pipe network Yu gas mixing tank 2, and exhaust gas
Outlet pipe 4 is connected to the top of gas mixing tank 2, will be passed through fire by the mixed gas D of gas mixing tank 2 after mixing
In torch pipe net.Pressure-regulating valve 9 and differential pressure transmitter 8 are equipped at exhaust gas outlet pipe road 4, specifically, differential pressure transmitter 8 is located at pressure
It is connect between force regulating valve 9 and gas mixing tank 2 and with pressure-regulating valve 9.Wherein, differential pressure transmitter 8 goes out for detecting exhaust gas
The pressure of mixed gas D at feed channel 4, and pressure-regulating valve 9 is carried out by the pressure value that differential pressure transmitter 8 detects
Appropriate adjustment, so that mixed gas D has suitable pressure value when being transported to torch pipe network.
By the first oxygen conten analyser 6a being set on gas mixing tank 2, can real-time detection to gas mixing tank 2
Oxygen content in interior gas guarantees the oxygen content for the mixed gas D being passed through in torch pipe network lower than 2%, to guarantee torch
Safety at system.By the way that differential pressure transmitter 8 is arranged at exhaust gas outlet pipe road 4, for detecting at exhaust gas outlet pipe road 4
The pressure of mixed gas D, if when the hypertonia of mixed gas D, pressure is adjusted by pressure-regulating valve 9, by mixed gas D's
Pressure adjusting is delivered at torch pipe network again to desired value.
[embodiment 2]
As shown in Figure 1, embodiment 2 is on the basis of embodiment 1, embodiment 2 further includes being located at VOCs collection device and nitrogen
The second oxygen conten analyser 6b and Control for Oxygen Content system 7 at gas inlet pipeline 1 between feed channel 14, the second oxygen content
Analyzer 6b is used to detect the oxygen content in the VOCs exhaust gas A of VOCs collection device discharge.Control for Oxygen Content system 7 respectively with
First oxygen conten analyser 6a, the second oxygen conten analyser 6b and nitrogen valve 3 connect.In the present embodiment, nitrogen valve 3 can be with
It is the solenoid valve for adjusting aperture.
By setting Control for Oxygen Content system 7 to the first oxygen conten analyser 6a, the second oxygen conten analyser 6b and nitrogen
Valve 3 is uniformly controlled, without manually being operated from side, convenient and saving human cost.The reception of Control for Oxygen Content system 7 comes from
With the oxygen content at the second oxygen conten analyser 6b at the first oxygen conten analyser 6a, two mode is selected according to two, that is, is selected
Opening, closing or its aperture of the Maximum constraint nitrogen valve 3 of obtained oxygen content, that is, the first oxygen conten analyser 6a
Oxygen content signal before obtaining, oxygen content signal after the second oxygen conten analyser 6b is obtained, if the two has any one to be greater than 2%,
It then chooses the larger value in the two nitrogen valve 3 is adjusted, be equal to if preceding oxygen content signal is respectively less than with rear oxygen content signal
2%, then it is not necessarily to carry out the adjusting of nitrogen valve 3.Guarantee that the oxygen content in mixed gas D reaches the mark that can be passed through torch pipe network
Whether standard, i.e. oxygen content are less than 2%, to guarantee the safety at torch assembly.
[embodiment 3]
As shown in Figure 1, embodiment 3 is on the basis of Examples 1 to 2, embodiment 3 further include: demister 15, level transmitting
Device 12 and drain pipe, wherein demister 15 is set to the top in gas mixing tank 2 and being in the gas mixing tank 2, liquid level
Transmitter 12 is set on gas mixing tank 2, and for the liquid level in detection gas blending tank 2, the drain pipe and gas are mixed
The bottom connection of tank 2 is closed, and is equipped with tapping valve 13 at drain pipe, tapping valve 13 is connect with fluid level transmitter 12.
When mixing using nitrogen with VOCs exhaust gas A, since the temperature of nitrogen is lower, VOCs can be reduced indirectly in mixing
The temperature of exhaust gas A will lead to part volatile organic matter and condense into liquid, thus when mixed gas D passes through demister 15, condensation
Volatile organic matter can stay in the bottom of gas mixing tank 2 and form the discharge liquor C that is discharged to drain pipe.
When the liquid level of liquid is higher than the 40% of the height of entire gas mixing tank 2, fluid level transmitter 12 can be sent
Signal is to tapping valve 13, so that tapping valve 13 is opened, so that the discharge liquor C in gas mixing tank 2 is discharged by drain pipe, otherwise
Easily cause entrained liquid, increases the load of demister 15.
[embodiment 4]
As shown in Figure 1, embodiment 4, on the basis of Examples 1 to 3, embodiment 4 further includes emergency blow-down pipeline 5, this is tight
Anxious exhausting pipeline 5 is connected to the inside of gas mixing tank 2, and stop valve 16 is equipped at emergency blow-down pipeline 5, is used for gas
The internal gas of blending tank 2 is discharged, and the stop valve 16 is connect with differential pressure transmitter 8.
When detecting that the pressure of mixed gas D is higher than safe pressure at differential pressure transmitter 8, differential pressure transmitter 8 can be automatic
Signal is sent to stop valve 16, to open stop valve 16 so that in gas mixing tank 2 can quick pressure releasing, avoid gas mixed
It closes tank 2 to damage since pressure is too big, or safety accident occurs.
[embodiment 5]
As shown in Figure 1, embodiment 5 on the basis of Examples 1 to 4, is equipped with resistance at the exhaust gas outlet pipe road 4 of embodiment 5
Firearm 10, fire arrester 10 are set between differential pressure transmitter 8 and torch pipe network.Check-valves 11 is equipped at exhaust gas outlet pipe road 4, only
Valve 11 is returned to be set between fire arrester 10 and torch pipe network.Fire arrester is used for fiery condition barrier, avoids more equipment by fiery condition wave
And.Check-valves 11 can prevent the high-enriched organics organic component in torch pipe network from passing back into gas mixing tank 2.
It should be noted that above-described embodiment can be freely combined as needed.The above is only the utility model
Preferred embodiment, it is noted that for those skilled in the art, do not departing from the utility model principle
Under the premise of, several improvements and modifications can also be made, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (9)
1. a kind of docking safety device for VOCs processing characterized by comprising
Gas mixing tank is equipped with the first oxygen for detecting oxygen content inside the gas mixing tank at the gas mixing tank and contains
Measure analyzer；
Gas inlet pipeline, the inside of the connection of gas inlet pipeline the VOCs collection device and the gas mixing tank；
Source nitrogen is connected to by nitrogen pipeline, the nitrogen pipeline with the gas inlet pipeline, and nitrogen is equipped at the nitrogen pipeline
Air valve；
Exhaust gas outlet pipe road, the exhaust gas outlet pipe road is respectively communicated with the inside of torch pipe network Yu the gas mixing tank, described
Pressure-regulating valve and differential pressure transmitter are equipped at exhaust gas outlet pipe road, the differential pressure transmitter is located at the pressure-regulating valve and gas
It is connect between body blending tank and with the pressure-regulating valve.
2. the docking safety device according to claim 1 for VOCs processing, it is characterised in that:
The second oxygen conten analyser at gas inlet pipeline between the VOCs collection device and nitrogen pipeline.
3. the docking safety device according to claim 2 for VOCs processing, which is characterized in that
Further include:
Control for Oxygen Content system, the Control for Oxygen Content system are divided with first oxygen conten analyser, the second oxygen content respectively
Analyzer is connected with nitrogen valve.
4. the docking safety device according to claim 1 for VOCs processing, which is characterized in that
Further include:
Demister, the demister are set in the gas mixing tank.
5. the docking safety device according to claim 4 for VOCs processing, which is characterized in that
Further include:
The fluid level transmitter being set on the gas mixing tank；
Drain pipe, the drain pipe are connected to the bottom of the gas mixing tank, and tapping valve, the row are equipped at the drain pipe
Liquid valve is connect with the fluid level transmitter.
6. the docking safety device according to claim 1 for VOCs processing, which is characterized in that
Further include:
The emergency blow-down pipeline being connected to the inside of the gas mixing tank, for the internal gas of gas mixing tank to be discharged,
Stop valve is equipped at the emergency blow-down pipeline.
7. the docking safety device according to claim 6 for VOCs processing, it is characterised in that:
The stop valve is connect with the differential pressure transmitter.
8. the docking safety device according to claim 1 for VOCs processing, it is characterised in that:
Be equipped with fire arrester at the exhaust gas outlet pipe road, the fire arrester be set to the differential pressure transmitter and torch pipe network it
Between.
9. the docking safety device according to claim 8 for VOCs processing, it is characterised in that:
Check-valves is equipped at the exhaust gas outlet pipe road, the check-valves is set between the fire arrester and torch pipe network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820674608.6U CN208349314U (en) | 2018-05-07 | 2018-05-07 | A kind of docking safety device for VOCs processing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820674608.6U CN208349314U (en) | 2018-05-07 | 2018-05-07 | A kind of docking safety device for VOCs processing |
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| Publication Number | Publication Date |
|---|---|
| CN208349314U true CN208349314U (en) | 2019-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820674608.6U Active CN208349314U (en) | 2018-05-07 | 2018-05-07 | A kind of docking safety device for VOCs processing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110848717A (en) * | 2019-12-20 | 2020-02-28 | 大连福佳·大化石油化工有限公司 | Oil tank truck loading VOC recovery processing system and processing method thereof |
| CN111871144A (en) * | 2020-08-06 | 2020-11-03 | 临沂恒昌焦化股份有限公司 | Coking waste gas recovery processing system |
-
2018
- 2018-05-07 CN CN201820674608.6U patent/CN208349314U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110848717A (en) * | 2019-12-20 | 2020-02-28 | 大连福佳·大化石油化工有限公司 | Oil tank truck loading VOC recovery processing system and processing method thereof |
| CN111871144A (en) * | 2020-08-06 | 2020-11-03 | 临沂恒昌焦化股份有限公司 | Coking waste gas recovery processing system |
| CN111871144B (en) * | 2020-08-06 | 2022-03-11 | 临沂恒昌焦化股份有限公司 | Coking waste gas recovery processing system |
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