CN209513721U - A kind of pretreatment system for oxygen conten analyser after gas-blowing engine - Google Patents
A kind of pretreatment system for oxygen conten analyser after gas-blowing engine Download PDFInfo
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- CN209513721U CN209513721U CN201822231382.5U CN201822231382U CN209513721U CN 209513721 U CN209513721 U CN 209513721U CN 201822231382 U CN201822231382 U CN 201822231382U CN 209513721 U CN209513721 U CN 209513721U
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Abstract
The utility model relates to a kind of pretreatment system for oxygen conten analyser after gas-blowing engine, the level-one pretreatment system including being set to outside analyzer cabinet and the second level pretreatment system in analyzer cabinet；Level-one pretreatment system is made of water washing tank and oil-washing tank, and water washing tank connects oil-washing tank one and oil-washing tank two by entrance sample feed channel simultaneously；For second level pretreatment system by being made up of the sequentially connected knockout drum of sample feed channel, cool dryers, air filter and flowmeter, the sample feed channel in flowmeter downstream connects paramagnetic oxygen analyzer；Triple valve is set in sample feed channel between air filter and flowmeter, another valve port of triple valve connects standard gas output end by pressure reducing valve.The utility model can be avoided the blocking of tar and naphthalene to pipeline in coal gas, and effectively prevent the gas pressure excessively high influence oxygen analyzer service life in measurement and calibration process, and oxygen analyzer is enable accurately to measure for a long time, and guarantee that electrical tar precipitator is safely operated.
Description
Technical field
The utility model relates to online oxygen analysis technical fields, more particularly to one kind to contain for oxygen after gas-blowing engine
Measure the pretreatment system of analyzer.
Background technique
Coal gas oxygen analyzer is mainly used for the oxygen content in coal gas analysis after electrical tar precipitator, guarantees electrical tar precipitator electric discharge
When do not explode.The sample point selecting of oxygen analyzer mainly has 2 kinds of modes at present, the first design sample position is placed on
, need to be by the way of steam ejection since system is negative pressure between electrical tar precipitator and air blower, this mode is to steam pressure
Very high with water content requirement, common steam is difficult to meet the requirements.Another design sample position is placed on air blower downstream,
Since pipeline is that positive pressure does not need steam ejection, but since gas pressure is high after air blower, flow is big, tar and naphthalene in coal gas
It is easier to cause line clogging.
Traditional gas filter device mainly using washing and air filter, can effectively remove tar and dust in this way
Impurity, but not can be removed the naphthalene in coal gas, and oxygen analysis system in actual motion maintenance process often due to the knot of naphthalene
Crystalline substance causes line clogging；In addition, due to after air blower gas pressure fluctuate, the sample throughput into oxygen analyzer is difficult to stablize control
System, flow is excessive to be unfavorable for oxygen analyzer long-time service.Meanwhile in some coal chemical enterprises, since operator lacks maintenance experience,
The standard gas improper use in daily maintenance, cause standard gas hypertonia damage oxygen analyzer the case where happen occasionally.Above situation
Generation often will cause electrical tar precipitator shutdown, bring serious economic loss to manufacturing enterprise.
Summary of the invention
The utility model provides a kind of pretreatment system for oxygen conten analyser after gas-blowing engine, can be avoided
The blocking of tar and naphthalene to pipeline in coal gas, and it effectively prevent the excessively high influence oxygen analyzer of gas pressure in measurement and calibration process
Service life enables oxygen analyzer accurately to measure for a long time, and guarantees that electrical tar precipitator is safely operated.
In order to achieve the above object, the utility model is implemented with the following technical solutions:
A kind of pretreatment system for oxygen conten analyser after gas-blowing engine, including the level-one being set to outside analyzer cabinet
Pretreatment system, and the second level pretreatment system in analyzer cabinet；The level-one pretreatment system is by water washing tank and washing oil
Tank composition, water washing tank connect the gas piping in gas-blowing engine downstream by sample gas access conduit；Oil-washing tank is redundant configuration, by
Oil-washing tank one and oil-washing tank two form, and water washing tank connects oil-washing tank one and oil-washing tank two by entrance sample feed channel simultaneously；Second level
Pretreatment system is by passing through the sequentially connected knockout drum of sample feed channel, cool dryers, air filter and flowmeter group
Knockout drum, the sample feed channel connection in flowmeter downstream are separately connected at the outlet sample feed channel of, oil-washing tank one, oil-washing tank two
Paramagnetic oxygen analyzer；Triple valve, another valve port of triple valve are set in sample feed channel between air filter and flowmeter
Standard gas output end is connected by pressure reducing valve.
The water washing tank is equipped with drainage pipeline, exhaust pipe and water inlet line, sets hand on water inlet line and drainage pipeline
Dynamic ball valve.
The oil-washing tank one, oil-washing tank two top set exhaust pipe respectively, bottom sets waste liquid emptying pipeline, waste liquid respectively
Blow valve is set on emptying pipeline.
The sample gas access conduit sets shut-off valve, entrance sample feed channel and outlet close to air blower downstream gas piping one end
Sample feed channel sets manual ball valve close to oil-washing tank one, two one end of oil-washing tank respectively.
Steam companions is set respectively in the sample gas access conduit, entrance sample feed channel.
The flow is calculated as suspended body flowmeter, has and manually adjusts charge flow rate and output 4-20mA semiotic function, letter
Number output end connects DCS system, in addition DCS system connects warning device.
In addition sample feed channel between the flowmeter and paramagnetic oxygen analyzer connects diffuse channel, set 1 on diffuse channel
The safety valve of~2 10kPa.
Compared with prior art, the utility model has the beneficial effects that
1) the utility model can effectively remove tar, naphthalene and the other impurities in coal gas sample gas, coordinating with steam rapid heat cycle heat tracing energy
Enough guarantee that sampling pipe does not block for a long time, greatly reduces daily maintenance amount；
2) since the gas pressure after air blower is high, water washing tank, oil-washing tank are provided with exhaust pipe, effectively shorten sound
Answer lag time；
3) oil-washing tank uses redundant configuration, guarantees that system continuously runs without interruption when replacing washing oil；
4) circulatory mediator that washing oil washes benzene unit as coke-oven plant can gather materials on the spot, and supply is filled, and use compared to conventional
Dosing method removes naphthalene, has substantially saved maintenance cost；
5) flow alarm function is carried out by DCS system, whether sampling pipe blocks before capable of monitoring oxygen analyzer at any time,
And it handles in time；
6) diffuse channel and safety valve are set before oxygen analyzer, it can when the hypertonia of marked gas or coal gas sample gas
Automatically it is diffused, guarantees that the sample atmospheric pressure entered in oxygen analyzer is consistently lower than 10kPa, avoid the sensing element of oxygen analyzer
It is damaged.
Detailed description of the invention
Fig. 1 is a kind of structure for the pretreatment system of oxygen conten analyser after gas-blowing engine described in the utility model
Schematic diagram.
In figure: 1. air blower downstream 4. water inlet line of gas piping 2. shut-off valve, 3. steam companions, 5. exhaust pipe
6. one 13. oil-washing tank of drainage pipeline 7. water washing tank, 8/9/10/11. manual ball valve, 12. oil-washing tank, 2 14/16. blow valve
15/17. exhaust pipe, 18. analyzer cabinet, 19. knockout drum, 20. cool dryers, 21. air filter, 22. triple valve
23. 26. safety valve of pressure reducing valve 24. standard gas, 25. flowmeter, 27. paramagnetic oxygen analyzer
Specific embodiment
Specific embodiment of the present utility model is described further with reference to the accompanying drawing:
As shown in Figure 1, a kind of pretreatment system for oxygen conten analyser after gas-blowing engine described in the utility model,
Including the level-one pretreatment system being set to outside analyzer cabinet 18, and the second level pretreatment system in analyzer cabinet 18；It is described
Level-one pretreatment system is made of water washing tank 7 and oil-washing tank 12,13, and water washing tank 7 connects coal gas air blast by sample gas access conduit
The gas piping 1 in machine downstream；Oil-washing tank is redundant configuration, is made of oil-washing tank 1 and oil-washing tank 2 13, water washing tank 7 pass through into
Mouth sample feed channel connects oil-washing tank 1 and oil-washing tank 2 13 simultaneously；Second level pretreatment system by sample feed channel by being sequentially connected
Knockout drum 19, cool dryers 20, air filter 21 and flowmeter 25 form, oil-washing tank 1, oil-washing tank 2 13
Outlet sample feed channel be separately connected knockout drum 19, the sample feed channel in 25 downstream of flowmeter connects paramagnetic oxygen analyzer 17；
Triple valve 22 is set in sample feed channel between air filter 21 and flowmeter 25, another valve port of triple valve 22 is by subtracting
Pressure valve 23 connects 24 output end of standard gas.
The water washing tank 7 is equipped with drainage pipeline 6, exhaust pipe 5 and water inlet line 4, water inlet line 4 and drainage pipeline 6
On set manual ball valve.
The oil-washing tank 1, oil-washing tank 2 13 top set exhaust pipe 15/17 respectively, bottom sets waste liquid evacuated tube respectively
Road, waste liquid empty and set blow valve 14/16 on pipeline.
The sample gas access conduit sets shut-off valve 2 close to 1 one end of air blower downstream gas piping, entrance sample feed channel and goes out
Mouth sample feed channel sets manual ball valve 8/10 close to oil-washing tank 1,2 13 one end of oil-washing tank respectively.
Steam companions 3 is set respectively in the sample gas access conduit, entrance sample feed channel.
The flowmeter 25 is suspended body flowmeter, has and manually adjusts charge flow rate and output 4-20mA semiotic function,
Signal output end connects DCS system, in addition DCS system connects warning device.
In addition sample feed channel between the flowmeter 25 and paramagnetic oxygen analyzer 27 connects diffuse channel, on diffuse channel
If the safety valve 26 of 1~2 10kPa.
Using a kind of pre- place for the pretreatment system of oxygen conten analyser after gas-blowing engine described in the utility model
Reason method is as follows:
1) the coal gas sample gas produced from air blower downstream gas piping 1 fills 7 tops from washing and enters, and washing removal is wherein
Tar after exported at the top of water washing tank 7 again, enter from oil-washing tank 1 or the top of oil-washing tank 2 13, wash away in coal gas sample gas
Naphthalene；
2) moisture therein is removed except the coal gas sample gas of tar removing and naphthalene enters gas-liquid separator 19, using cooling drying
The temperature of coal gas sample gas is reduced to 8~12 DEG C by device 20, further removes the moisture in coal gas sample gas in the process；
3) the coal gas sample gas after cooling dry removes residual impurity by air filter 21, finally by flowmeter 25 into
Enter into paramagnetic oxygen analyzer 27；
When the coal gas sample throughput in sample feed channel is less than 50mL/min, illustrate that sample feed channel is not smooth, flowmeter 25
It issues signal to alarm by DCS system, pretreatment system is reminded to need to overhaul；
When the pressure of coal gas sample gas or standard gas is higher than 10kPa in sample feed channel, safety valve 26 is opened, and passes through diffuse channel
It is diffused, guarantees that the sample atmospheric pressure for entering paramagnetic oxygen analyzer 27 is stablized.
In a kind of pretreatment system for oxygen conten analyser after gas-blowing engine described in the utility model, level-one is located in advance
Reason system is arranged in 18 outside of analyzer cabinet, mainly includes water washing tank 7 and oil-washing tank 12,13, and effect is removed in coal gas sample gas
Tar and naphthalene.
Water washing tank 7 removes a large amount of tar and a part of naphthalene in coal gas sample gas using water at low temperature, can by regulating water inlet valve 4
To guarantee the stable level in water washing tank 7.Oil-washing tank 12,13 is for further except the naphthalene in coal gas sample gas, using redundant configuration,
2 oil-washing tanks 12,13 mutual backup are switched to another when wherein an oil-washing tank needs replacing washing oil by manual ball valve
Platform oil-washing tank guarantees system continuous operation.Steam companions 3 is used to prevent tar and naphthalene blocking sample tracheae in coal gas sample gas
Road.
When normal work, Open valve 2,8 (10), 9 (11), the closing of other valves, the aperture of adjusting manual ball valve 4, guarantor
Water level is normal in card water washing tank 7, prevents aqueous reflux in water washing tank 7 from guaranteeing 5 normal exhaust of exhaust pipe into oil-washing tank 12/13.
Replace washing oil process it is as follows: for needing replacing the washing oil in oil-washing tank 1, first close manual ball valve 8,
9, the connecting line of oil-washing tank 1 is cut off, manual ball valve 10,11 is opened, connects the connecting line of oil-washing tank 2 13, is guaranteed whole
A system runs without interruption；It when replacing washing oil, opens blow valve 14 and empties the waste oil in oil-washing tank 1, and new wash is added
Oil should ensure that washing oil liquid level is no more than the height of exhaust pipe 15 when adding washing oil.Washing oil replacement frequency regard field condition and
It is fixed, usually 1 week or so.
Second level pretreatment is arranged in inside analyzer cabinet 18, mainly includes gas-liquid separator 19, cool dryers 20, air
Filter 21, flowmeter 25, effect are moisture, the reduction coal gas sample temperature degree reduced in coal gas sample gas, are removed in coal gas sample gas
Residual impurity.
Flowmeter 25 is suspended body flowmeter, can manually adjust charge flow rate, while can be sent into 4-20mA output signal
DCS system, when sample feed channel blocks, flow becomes smaller, and can be alarmed in time by DCS system.It is set on diffuse channel
The safety valve 26 of 10kPa, when coal gas sample gas or standard gas pressure are higher than 10kPa, can automatic relief, prevent paramagnetic oxygen analyzer
The excessive damage equipment of 27 inlet pressure.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (7)
1. a kind of pretreatment system for oxygen conten analyser after gas-blowing engine, which is characterized in that including being set to analyzer
Level-one pretreatment system outside cabinet, and the second level pretreatment system in analyzer cabinet；The level-one pretreatment system is by water
Cleaning of evaporator and oil-washing tank composition, water washing tank connect the gas piping in gas-blowing engine downstream by sample gas access conduit；Oil-washing tank is
Redundant configuration is made of oil-washing tank one and oil-washing tank two, and water washing tank connects oil-washing tank one simultaneously by entrance sample feed channel and washes
Oil tank two；Second level pretreatment system is by passing through the sequentially connected knockout drum of sample feed channel, cool dryers, air filter
And flowmeter composition, oil-washing tank one, oil-washing tank two outlet sample feed channel be separately connected knockout drum, the sample in flowmeter downstream
Feed channel connects paramagnetic oxygen analyzer；Set triple valve in sample feed channel between air filter and flowmeter, triple valve it is another
An outer valve port connects standard gas output end by pressure reducing valve.
2. a kind of pretreatment system for oxygen conten analyser after gas-blowing engine according to claim 1, feature
It is, the water washing tank is equipped with drainage pipeline, exhaust pipe and water inlet line, sets manual ball on water inlet line and drainage pipeline
Valve.
3. a kind of pretreatment system for oxygen conten analyser after gas-blowing engine according to claim 1, feature
Be, the oil-washing tank one, oil-washing tank two top set exhaust pipe respectively, bottom sets waste liquid emptying pipeline, waste liquid row respectively
Blow valve is set on vacant duct.
4. a kind of pretreatment system for oxygen conten analyser after gas-blowing engine according to claim 1, feature
It is, the sample gas access conduit sets shut-off valve, entrance sample feed channel and outlet sample close to air blower downstream gas piping one end
Feed channel sets manual ball valve close to oil-washing tank one, two one end of oil-washing tank respectively.
5. a kind of pretreatment system for oxygen conten analyser after gas-blowing engine according to claim 1, feature
It is, sets steam companions respectively in the sample gas access conduit, entrance sample feed channel.
6. a kind of pretreatment system for oxygen conten analyser after gas-blowing engine according to claim 1, feature
It is, the flow is calculated as suspended body flowmeter, has and manually adjusts charge flow rate and export 4-20mA semiotic function, signal is defeated
Outlet connects DCS system, in addition DCS system connects warning device.
7. a kind of pretreatment system for oxygen conten analyser after gas-blowing engine according to claim 1, feature
It is, in addition the sample feed channel between the flowmeter and paramagnetic oxygen analyzer connects diffuse channel, set 1~2 on diffuse channel
The safety valve of a 10kPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822231382.5U CN209513721U (en) | 2018-12-28 | 2018-12-28 | A kind of pretreatment system for oxygen conten analyser after gas-blowing engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822231382.5U CN209513721U (en) | 2018-12-28 | 2018-12-28 | A kind of pretreatment system for oxygen conten analyser after gas-blowing engine |
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| CN209513721U true CN209513721U (en) | 2019-10-18 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444253A (en) * | 2018-12-28 | 2019-03-08 | 中冶焦耐(大连)工程技术有限公司 | A kind of pretreatment system and method for oxygen conten analyser after gas-blowing engine |
| CN112946195A (en) * | 2021-02-03 | 2021-06-11 | 中油锐思技术开发有限责任公司 | Multi-element thermal fluid residual oxygen detection device |
| CN115165510A (en) * | 2022-09-07 | 2022-10-11 | 苏州盛仕瑆分析技术有限公司 | Sample gas sampling analysis system arranged in front of electrical tar precipitator and processing method thereof |
-
2018
- 2018-12-28 CN CN201822231382.5U patent/CN209513721U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444253A (en) * | 2018-12-28 | 2019-03-08 | 中冶焦耐(大连)工程技术有限公司 | A kind of pretreatment system and method for oxygen conten analyser after gas-blowing engine |
| CN112946195A (en) * | 2021-02-03 | 2021-06-11 | 中油锐思技术开发有限责任公司 | Multi-element thermal fluid residual oxygen detection device |
| CN112946195B (en) * | 2021-02-03 | 2023-10-03 | 中油锐思技术开发有限责任公司 | Multi-element thermal fluid residual oxygen detection device |
| CN115165510A (en) * | 2022-09-07 | 2022-10-11 | 苏州盛仕瑆分析技术有限公司 | Sample gas sampling analysis system arranged in front of electrical tar precipitator and processing method thereof |
| CN115165510B (en) * | 2022-09-07 | 2022-11-22 | 苏州盛仕瑆分析技术有限公司 | Sample gas sampling analysis system arranged in front of electrical tar precipitator and processing method thereof |
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