CN212348021U - Pretreatment device for kiln tail gas - Google Patents
Pretreatment device for kiln tail gas Download PDFInfo
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- CN212348021U CN212348021U CN202020705238.5U CN202020705238U CN212348021U CN 212348021 U CN212348021 U CN 212348021U CN 202020705238 U CN202020705238 U CN 202020705238U CN 212348021 U CN212348021 U CN 212348021U
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Abstract
The utility model relates to a preprocessing device of kiln tail gas, including sampling probe, gas-liquid processing apparatus, blow off pipe and gas analysis appearance, gas-liquid processing apparatus includes vapour and liquid separator, refrigerator and filter, sampling probe passes through the sampling pipe and is connected with vapour and liquid separator, refrigerator, filter and gas analysis appearance pass through the pipeline and establish ties, vapour and liquid separator, refrigerator and filter are connected with the blow off pipe through the drain pipe respectively, sampling probe still is connected with the blowback device, the blowback device is equipped with interior blowback pipeline and outer blowback pipeline. The utility model discloses utilize the stage filtration to remove dust, the purification mode that coarse filtration and fine filtration combined together, effectual gas analyzer passive form under having solved high dust, high sulphide and the high humidity operating mode filters the accumulation and blocks up, and it is big to maintain work load, and the difficult problem that online continuous operation rate is low for its stable performance is reliable, and it is little to maintain work load.
Description
Technical Field
The utility model relates to a have pollution exhaust-gas treatment technical field, especially relate to a kiln tail gas's preprocessing device.
Background
The kiln tail gas is a high-temperature gas containing a large amount of dangerous waste gas. With the continuous development of industrial demand, the problem of kiln tail gas emission is getting more serious, and the kiln tail gas emission needs to be monitored and processed to a certain extent, so that in the smelting and gas making industry, real-time monitoring is required
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The specific contents of the tail gas and the like provide real-time effective reference data for industrial control and safety requirements, and the above various reference data are usually realized through a gas analyzer, namely, the tail gas is introduced into the gas analyzer, and the gas analyzer automatically analyzes the tail gas to obtain data. When directly letting in tail gas among the gas analysis appearance, because the gas flow is big and the complicated composition in the gas, very easily just make gas analysis appearance high load operation, material such as subsidiary dust, sulphide in the gas can transition accumulation inside gas analysis appearance for the later stage is big to gas analysis appearance's maintenance work volume, and gas analysis appearance is difficult to the continuous operation, and its online operating rate is low, and serious can damage gas analysis appearance even.
Therefore, current gas analysis appearance can generally be connected and cooperate the use with sampling probe when using, is equipped with the filter screen in the sampling probe and filters gas in order to prevent that the dust from blockking up gas analysis appearance, however, because kiln tail gas is high temperature gas usually to in order to prevent that gas liquefaction leads to blockking up sampling probe in sampling probe, still need keep its temperature, the liquid that enters into in the gas analysis appearance also can be high temperature gas, causes the damage to gas analysis appearance more easily. Therefore, a gas pretreatment device capable of sufficiently filtering dust and reducing moisture is required.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a pretreatment device for kiln exhaust for solving above-mentioned technical problem.
The purpose of the utility model is realized through the following technical scheme:
the utility model provides a kiln tail gas's preprocessing device, includes sampling probe, gas-liquid processing apparatus, blow off pipe and gas analysis appearance, gas-liquid processing apparatus includes vapour and liquid separator, refrigerator and filter, sampling probe is equipped with the filter screen, sampling probe passes through the sampling pipe and is connected with vapour and liquid separator, refrigerator, filter and gas analysis appearance pass through the pipeline and establish ties, vapour and liquid separator, refrigerator and filter are connected with the blow off pipe through the drain pipe respectively, sampling probe still is connected with the blowback device, the blowback device is equipped with interior blowback pipeline and outer blowback pipeline.
Further, the blowback device is including the intake pipe, treater, buffer tank and the blowback pipeline that communicate in proper order, the blowback pipeline includes interior blowback pipeline and outer blowback pipeline, interior blowback pipeline with sample probe internal connection, outer blowback pipeline with sample probe external connection.
Furthermore, an electromagnetic main valve is arranged between the back flushing pipeline and the buffer tank, an inner back flushing electromagnetic valve is arranged between the inner back flushing pipeline and the sampling probe, and an outer back flushing electromagnetic valve is arranged between the outer back flushing pipeline and the sampling probe.
Furthermore, a dryer and a sample gas flowmeter are sequentially arranged on a connecting pipeline between the filter and the gas analyzer.
Further, an electric ball valve and an air pump are sequentially arranged between the gas-liquid separator and the refrigerator.
Further, a vent pipeline is arranged between the air pump and the refrigerator, and a vent regulating valve is arranged on the vent pipeline.
Further, a drain pipe between the gas-liquid separator and the sewage discharge pipeline and a drain pipe between the filter and the sewage discharge pipeline are both provided with a sewage discharge control valve, and a drain pipe between the refrigerator and the sewage discharge pipeline is provided with a peristaltic pump.
Further, the refrigerator is a compressor condenser.
Further, the air pump is a diaphragm type air pump.
The utility model discloses compare in prior art's beneficial effect and be:
the utility model discloses a kiln tail gas preprocessing device, carry out preliminary coarse filtration by sampling probe sample high temperature kiln tail gas and to tail gas, carry out further fine filtration again, through vapour and liquid separator separation gas and liquid promptly, the gaseous process refrigerator cooling of separation, the gas after the cooling is filtered by further dust removal of filter again, let in gas in the gas analysis appearance again at last, remove dust through foretell stage filtration, and the purification mode that coarse filtration and fine filtration combined together, high dust has effectively been solved, gas analysis appearance's passive form accumulation jam problem under the operating mode of high sulphide and high humidity, follow-up need not frequently maintain gas analysis appearance, and can improve its online operation's reliability and improve its operating efficiency.
In addition, the back flushing device arranged on the sampling probe can comprehensively clear dust and other sundries which are easy to block on the sampling probe through the cooperative action of the inner back flushing pipeline and the outer back flushing pipeline, so that the sampling probe can continuously and stably work for a long time, and the service life of the sampling probe can be further prolonged.
Drawings
Fig. 1 is a schematic structural diagram of a pretreatment device according to an embodiment of the present invention.
Detailed Description
To facilitate understanding of those skilled in the art, the present invention will be described in further detail with reference to specific embodiments and drawings.
Referring to fig. 1, a preferred embodiment of the present invention is as follows.
The utility model provides a kiln tail gas's preprocessing device, including sampling probe 1, gas-liquid processing apparatus 2, blow off pipe 3 and gas analysis appearance 4, be equipped with the filter screen in the sampling probe 1, gas-liquid processing apparatus 2 includes vapour and liquid separator 21, refrigerator 22 and filter 23, sampling probe 1 passes through sampling tube 5 and is connected with vapour and liquid separator 21, wherein, sampling tube 5 is electric heat tracing sampling tube 5, vapour and liquid separator 21, refrigerator 22, filter 23 and gas analysis appearance 4 are established ties through the pipeline, vapour and liquid separator 21, refrigerator 22 and filter 23 are connected with blow off pipe 3 through drain pipe 6 respectively, sampling probe 1 still is connected with blowback device 3, blowback device 3 is equipped with interior blowback pipeline 341 and outer blowback pipeline 342. The utility model discloses collect high temperature kiln tail gas by sampling probe 1, be equipped with the filter screen in the sampling probe 1, can carry out preliminary coarse filtration to tail gas, then carry out further fine filtration again, through gas-liquid separator 21 separation gas and liquid promptly, the gaseous process refrigerator 22 cooling of separation, gas after the cooling is filtered by the further dust removal of filter 23 again, let in gas analysis appearance 4 again at last, remove dust through foretell stage filtration, and the purification mode that coarse filtration and fine filtration combined together, high dust has effectively been solved, gas analysis appearance 4's passive form accumulation jam problem under the operating mode of high sulphide, follow-up need not frequently maintain gas analysis appearance 4, and can improve its on-line operation's reliability and improve its operating efficiency.
In this embodiment, the back-blowing device 3 includes an air inlet pipe 31, a processor 32, a buffer tank 33 and a back-blowing pipeline 34 that are sequentially communicated, the back-blowing pipeline 34 includes an inner back-blowing pipeline 341 and an outer back-blowing pipeline 342, the inner back-blowing pipeline 341 is connected with the inside of the sampling probe 1, and the outer back-blowing pipeline 342 is connected with the outside of the sampling probe 1. Inert gas, such as nitrogen, passes through the processor 32 and the buffer tank 33 in sequence in the air inlet pipe 31, finally enters the blowback pipe, and through the cooperative action of the inner blowback pipeline 341 and the outer blowback pipeline 342, dust and other impurities which are easy to cause blockage on the sampling probe 1 are removed in an all-round manner, so that the sampling probe 1 can continuously and stably work for a long time, and the service life of the sampling probe can be further prolonged.
In this embodiment, a solenoid main valve 7 is disposed between the back flushing pipeline and the buffer tank 33, an inner back flushing solenoid valve 71 is disposed between the inner back flushing pipeline 341 and the sampling probe 1, and an outer back flushing solenoid valve 72 is disposed between the outer back flushing pipeline 342 and the sampling probe 1. The function of solenoid valve lies in controlling the circulation of gas, and this embodiment adopts two-position two-way high frequency switch action solenoid valve, and the purge solenoid valve utilizes the pulsed to sweep, adopts timing and tally function by PLC, blows 10 seconds each time, stops 5 seconds, totally 4 times, adopts inside and outside return circuit to sweep.
In this embodiment, the filter 23 is a WL-02 mist filter 23, the filter 23 is composed of an organic glass shell and a PVC microporous filter element, and the filter 23 is a secondary filter 23 of the sampling system, and has the functions of separating condensed water, further filtering dust remaining from the sampling filter 23, and removing acid mist, the filtering precision is 5 μm, the filter element is disposable, the normal replacement period is 6 months, and the shortest period is not less than 3 months. A dryer 13 and a sample gas flowmeter 14 are provided in this order on a connecting pipe between the filter 23 and the gas analyzer 4. The dryer 13 is configured to further dry the filtered gas, so that the gas can be kept in a dry state all the time when entering the gas analyzer 4, thereby avoiding affecting the operation of the gas analyzer 4. The sample gas flow meter 14 is used to dissipate excess sample flow.
In this embodiment, the electric ball valve 8 and the suction pump 9 are provided between the gas-liquid separator 21 and the refrigerator 22 in this order. Wherein, the electric ball valve 8 is an original installed imported Japanese CKD electric ball valve 8, and the function of the electric ball valve is to cut off a sampling gas path in a manual state or during purging. Because the sealing performance of the electric ball valve 8 is better than that of the electromagnetic valve, the situation that the analyzer detector is damaged due to high blowback pressure of blowback air during blowback can be avoided. The air pump 9 is a membrane type air pump 9 and is used for corrosive gas, the function of the air pump is to ensure that the sampling gas can smoothly enter the analyzer under the conditions of no pressure and negative pressure of a sampling pipeline, the air extraction amount is more than or equal to 6L/min, and the output pressure is more than or equal to 0.5 bar.
In this embodiment, a vent pipe 10 is provided between the air pump and the refrigerator 22, and a vent adjusting valve 101 is provided on the vent pipe 10. The blow-down pipeline 10 is connected with the blow-down house steward, and sewage pipes 3, gas analyzer 4's gas outlet all are connected with the blow-down house steward in addition, all can deliver to the blow-down house steward with the blowdown commodity circulation to each step blowdown processing of gas promptly, realize that the base member of pollutant is collected, avoid polluted environment.
In this embodiment, the liquid outlet pipe 6 between the gas-liquid separator 21 and the sewage draining pipe 3, and the liquid outlet pipe 6 between the filter 23 and the sewage draining pipe 3 are provided with the sewage draining control valve 11, and the liquid outlet pipe 6 between the refrigerator 22 and the sewage draining pipe 3 is provided with the peristaltic pump 12. The liquid discharge system adopts two modes of a liquid discharge peristaltic pump 12 and an automatic liquid discharge device, the peristaltic pump 12 is specially used for recovering condensate in analytical equipment, a PVDF hose running at a low speed (5PPM) is connected with a NOVOPRENE hose through a slip hose to ensure good mechanical and chemical stability for a long time, a synchronous motor and a gear soft hose can prevent backflow of the condensate, and the peristaltic pump 12 can ensure safe removal of the condensate with the liquid discharge amount of 0.3L/h.
In the present embodiment, the refrigerator 22 is a compressor condenser. The compressor condenser is suitable for high-temperature environment, so that condensation caused by the fact that the temperature of the gas is reduced to be lower than a dew point is prevented, and errors caused by the change of the total amount of the gas are avoided. In the condenser selected in the embodiment, when the flow rate is 2L/min, the inlet temperature is less than or equal to 40 ℃, and the outlet temperature is 3.5 ℃ +/-0.5 ℃.
While the invention has been described in conjunction with the specific embodiments set forth above, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications, and variations that fall within the spirit and scope of the appended claims.
Claims (9)
1. The utility model provides a kiln tail gas's preprocessing device, its characterized in that, includes sampling probe, gas-liquid processing apparatus, blow off pipe and gas analysis appearance, sampling probe is equipped with the filter screen, gas-liquid processing apparatus includes vapour and liquid separator, refrigerator and filter, sampling probe passes through the sampling pipe and is connected with vapour and liquid separator, refrigerator, filter and gas analysis appearance pass through the pipeline and establish ties, vapour and liquid separator, refrigerator and filter are connected with the blow off pipe through the drain pipe respectively, sampling probe still is connected with the blowback device, the blowback device is equipped with interior blowback pipeline and outer blowback pipeline.
2. The pretreatment device for kiln exhaust according to claim 1, wherein the back-blowing device comprises an air inlet pipe, a processor, a buffer tank and a back-blowing pipeline which are sequentially communicated, the back-blowing pipeline comprises an inner back-blowing pipeline and an outer back-blowing pipeline, the inner back-blowing pipeline is connected with the interior of the sampling probe, and the outer back-blowing pipeline is connected with the exterior of the sampling probe.
3. The pretreatment device for kiln exhaust according to claim 2, wherein an electromagnetic main valve is arranged between the back-blowing pipeline and the buffer tank, an internal back-blowing electromagnetic valve is arranged between the internal back-blowing pipeline and the sampling probe, and an external back-blowing electromagnetic valve is arranged between the external back-blowing pipeline and the sampling probe.
4. The pretreatment device for kiln exhaust gas according to claim 1, wherein a dryer and a sample gas flowmeter are sequentially arranged on the connecting pipeline between the filter and the gas analyzer.
5. The pretreatment device for kiln tail gas according to claim 1, characterized in that an electric ball valve and a suction pump are sequentially arranged between the gas-liquid separator and the refrigerator.
6. The pretreatment device for kiln tail gas according to claim 5, characterized in that a vent pipe is arranged between the air pump and the refrigerator, and a vent regulating valve is arranged on the vent pipe.
7. The pretreatment device for kiln exhaust gas as claimed in claim 1, wherein a drain pipe between the gas-liquid separator and the sewage discharge pipe and a drain pipe between the filter and the sewage discharge pipe are provided with sewage discharge control valves, and a drain pipe between the refrigerator and the sewage discharge pipe is provided with a peristaltic pump.
8. The kiln tail gas pretreatment device according to claim 1, wherein the refrigerator is a compressor condenser.
9. The pretreatment device for kiln exhaust gas according to claim 5, wherein the air pump is a diaphragm type air pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020705238.5U CN212348021U (en) | 2020-04-30 | 2020-04-30 | Pretreatment device for kiln tail gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020705238.5U CN212348021U (en) | 2020-04-30 | 2020-04-30 | Pretreatment device for kiln tail gas |
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| CN212348021U true CN212348021U (en) | 2021-01-15 |
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| CN202020705238.5U Active CN212348021U (en) | 2020-04-30 | 2020-04-30 | Pretreatment device for kiln tail gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113996129A (en) * | 2021-09-16 | 2022-02-01 | 金川集团股份有限公司 | Preposed treatment device for residual chlorine absorption outer discharge sample gas |
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2020
- 2020-04-30 CN CN202020705238.5U patent/CN212348021U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113996129A (en) * | 2021-09-16 | 2022-02-01 | 金川集团股份有限公司 | Preposed treatment device for residual chlorine absorption outer discharge sample gas |
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