CN104569308A - Analysis and detection device of oxygen content in converter gas - Google Patents
Analysis and detection device of oxygen content in converter gas Download PDFInfo
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- CN104569308A CN104569308A CN201410835910.1A CN201410835910A CN104569308A CN 104569308 A CN104569308 A CN 104569308A CN 201410835910 A CN201410835910 A CN 201410835910A CN 104569308 A CN104569308 A CN 104569308A
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Abstract
The invention discloses an analysis and detection device of oxygen content in converter gas. The analysis and detection device comprises a main converter-gas recycling pipe, a nitrogen-source pipeline and an oxygen analyzer provided with a gas sampling detection unit, wherein a gas inlet end of the gas sampling detection unit of the oxygen analyzer is communicated with one end of a sample inlet pipeline, the other end of the sample inlet pipeline is communicated with one end of a sampling pipeline through a first valve, and the other end of the sampling pipeline stretches into the main converter-gas recycling pipe; a second valve is mounted on an opposite blowing pipeline, the sampling pipeline is communicated with the nitrogen-source pipeline through the opposite blowing pipeline, the nitrogen-source pipeline is communicated with a first gas inlet of a jet pump through a positive blowing pipeline, a second gas inlet of the jet pump is communicated with a gas outlet end of the gas sampling detection unit through a sample outlet pipeline, a gas mixing outlet of the jet pump is communicated with a gas outlet pipeline, a flow regulating valve is arranged on the sample inlet pipeline, and a third valve capable of opening or closing the positive blowing pipeline is arranged on the positive blowing pipeline. The analysis and detection device disclosed by the invention has the advantages of high working stability and high safety.
Description
Technical field
The present invention relates to gas safety and recycle field, be specifically related to the analysis and detection device of oxygen content in coal gas of converter.
Background technology
Coal gas of converter is the by-product gas produced in steelmaking converter converting process, and coal gas of converter is important secondary energy, and therefore the recovery levels of coal gas of converter greatly have impact on the production cost of enterprise.The recovery security performance of coal gas of converter is determined by the number of its oxygen content, in the coal gas of converter used at present, the structure of the analysis and detection device of oxygen content is: comprise RECOVERY OF CONVERTER GAS house steward, Nitrogen source gases pipeline, and be provided with the oxygen analyzer of gas sample detecting unit, the inlet end of gas sample detecting unit of oxygen analyzer is connected with one end of sample channel, the other end of sample channel is connected with one end of sampling pipe by the first valve, the other end of sampling pipe stretches into RECOVERY OF CONVERTER GAS house steward, sampling pipe is by being provided with the blowback pipeline communication Nitrogen source gases pipeline of the second valve, Nitrogen source gases pipeline is communicated with the first air intake opening of ejector by positive blowpipe road, second air intake opening of ejector is connected by the outlet side of produce kinds of pipeline with gas sample detecting unit, ejector gas and vapor permeation outlet with company open to atmosphere outlet pipe be connected.In above-mentioned coal gas of converter, the principle of work of the analysis and detection device of oxygen content is: when sample phase, close the second valve, and open the first valve, now, nitrogen in Nitrogen source gases pipeline can inject ejector through positive blowpipe road from the first air intake opening of ejector, inject the nitrogen of ejector again from the gas and vapor permeation outlet injection of ejector, thus make to produce negative pressure draft in ejector, under the effect of negative pressure draft in ejector, coal gas of converter in RECOVERY OF CONVERTER GAS house steward can successively through sampling pipe, first valve, positive blowpipe road enters the gas sample detecting unit of oxygen analyzer, then gas sample detecting unit carries out oxygen analysis to the coal gas of converter entered wherein, coal gas of converter after oxygen analysis is drawn out of gas sample detecting unit and enters produce kinds of pipeline under the effect of negative pressure draft, ejector is entered from the second air intake opening of ejector again through produce kinds of pipeline, the nitrogen that the coal gas of converter entering ejector can be launched into ejector takes ejector out of together, when after use a period of time, need enter the blowback stage carries out blast cleaning to sampling pipe, need first close the first valve, and open the second valve, now, the nitrogen in Nitrogen source gases pipeline can enter sampling pipe through blowback pipeline, again through sampling pipe ejection, thus realize the cleaning to sampling pipe.In above-mentioned coal gas of converter, the shortcoming of the analysis and detection device of oxygen content is: in sample phase, coal gas of converter in RECOVERY OF CONVERTER GAS house steward enters the process of gas sample detecting unit of oxygen analyzer from sampling pipe, the first valve, positive blowpipe road, the airshed of coal gas of converter is unstable, and then easily cause oxygen analyzer to detect the unusual fluctuations of data, affect the judgement of the recovery security performance of coal gas of converter; In the blowback stage, nitrogen is while entering blowback pipeline from Nitrogen source gases pipeline, also can continue to enter ejector through positive blowpipe road, cause there is negative pressure draft all the time in ejector, during due to the blowback stage, coal gas of converter is not had to enter the gas sample detecting unit of oxygen analyzer, now in ejector, negative pressure draft very easily affects the normal work of oxygen analyzer, and then also cause oxygen analyzer to detect the unusual fluctuations of data, have a strong impact on the judgement of the recovery security performance of coal gas of converter, for production safety has buried hidden danger.
Summary of the invention
The object of this invention is to provide the analysis and detection device of oxygen content in a kind of job stability and the high coal gas of converter of security.
For achieving the above object, present invention employs following technical scheme: the analysis and detection device of oxygen content in described coal gas of converter, comprise RECOVERY OF CONVERTER GAS house steward, Nitrogen source gases pipeline, and be provided with the oxygen analyzer of gas sample detecting unit, the inlet end of gas sample detecting unit of oxygen analyzer is connected with one end of sample channel, the other end of sample channel is connected with one end of sampling pipe by the first valve, the other end of sampling pipe stretches into RECOVERY OF CONVERTER GAS house steward, sampling pipe is by being provided with the blowback pipeline communication Nitrogen source gases pipeline of the second valve, Nitrogen source gases pipeline is communicated with the first air intake opening of ejector by positive blowpipe road, second air intake opening of ejector is connected by the outlet side of produce kinds of pipeline with gas sample detecting unit, the gas and vapor permeation outlet of ejector is connected with outlet pipe, sample channel is provided with flow control valve, positive blowpipe road is provided with the 3rd valve that can open or close positive blowpipe road.
Further, the analysis and detection device of oxygen content in aforesaid coal gas of converter, wherein: on sample channel, be provided with the 4th valve that can open or close sample channel, sample channel is also provided with flowmeter, the inlet end of flowmeter is by the first other pipeline communication sample channel, first other pipeline is provided with the 5th valve that can open or close the first other pipeline, and the outlet side of flowmeter is by the sample channel of the second other pipeline communication the 4th between valve and flow control valve.
Further, the analysis and detection device of oxygen content in aforesaid coal gas of converter, wherein: outside sampling pipe, the first valve, sample channel, flow control valve, oxygen analyzer, produce kinds of pipeline, ejector and outlet pipe, be respectively arranged with zone of heating.
Further, the analysis and detection device of oxygen content in aforesaid coal gas of converter, wherein: described zone of heating is heating tape.
Further, the analysis and detection device of oxygen content in aforesaid coal gas of converter, wherein: be also coated with heat-insulation layer outward at zone of heating.
Further, the analysis and detection device of oxygen content in aforesaid coal gas of converter, wherein: on Nitrogen source gases pipeline, be provided with decompression valve, ducted for Nitrogen source gases nitrogen pressure is adjusted to 0.05-0.15MPa by decompression valve.
Further, the analysis and detection device of oxygen content in aforesaid coal gas of converter, wherein: ducted for Nitrogen source gases nitrogen pressure is adjusted to 0.1MPa by decompression valve.
Further, the analysis and detection device of oxygen content in aforesaid coal gas of converter, wherein: on positive blowpipe road, be also provided with the tensimeter that can show nitrogen pressure in positive blowpipe road.
By the enforcement of technique scheme, the present invention has can make oxygen analyzer that the high advantage of abnormal data fluctuation, job stability and security in use can not occur.
Accompanying drawing explanation
Fig. 1 is the principle of work schematic diagram of the analysis and detection device of oxygen content in coal gas of converter of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in Figure 1, the analysis and detection device of oxygen content in described coal gas of converter, comprise RECOVERY OF CONVERTER GAS house steward 1, Nitrogen source gases pipeline 2, and be provided with the oxygen analyzer 4 of gas sample detecting unit 3, the inlet end of the gas sample detecting unit 3 of oxygen analyzer 4 is connected with one end of sample channel 5, the other end of sample channel 5 is connected with one end of sampling pipe 7 by the first valve 6, the other end of sampling pipe 7 stretches into RECOVERY OF CONVERTER GAS house steward 1, sampling pipe 7 is communicated with Nitrogen source gases pipeline 2 by the blowback pipeline 9 being provided with the second valve 8, Nitrogen source gases pipeline 2 is communicated with the first air intake opening of ejector 11 by positive blowpipe road 10, second air intake opening of ejector 11 is connected by the outlet side of produce kinds of pipeline 12 with gas sample detecting unit 3, the gas and vapor permeation outlet of ejector 11 is connected with outlet pipe 13, sample channel 5 is provided with flow control valve 14, positive blowpipe road 10 is provided with the 3rd valve 15 that can open or close positive blowpipe road 10, in the present embodiment, sample channel 5 is provided with the 4th valve 19 that can open or close sample channel 5, sample channel 5 is also provided with flowmeter 16, the inlet end of flowmeter 16 is communicated with sample channel 5 by the first other pipeline 17, first other pipeline 17 is provided with the 5th valve 24 that can open or close the first other pipeline 17, the outlet side of flowmeter 16 is communicated with the sample channel 5 between the 4th valve 19 and flow control valve 14 by the second other pipeline 18, independently can control the opening and closing of sample channel 5 and the first other pipeline 17 like this, further raising safety in operation, and by arranging flowmeter 16, the traffic conditions observing coal gas of converter in sample channel 5 can be shown better, be convenient to Timeliness coverage and adjust the flow value in sample channel 5, in the present embodiment, at sampling pipe 7, first valve 6, 4th valve 19, sample channel 5, flow control valve 14, oxygen analyzer 4, produce kinds of pipeline 12, zone of heating 20 is respectively arranged with outside ejector 11 and outlet pipe 13, can guarantee that coal gas of converter flows through sampling pipe 7 like this, first valve 6, 4th valve 19, sample channel 5, flow control valve 14, oxygen analyzer 4, produce kinds of pipeline 12, in the process of ejector 11 and outlet pipe 13, moisture in coal gas of converter is always vaporous water steam, the condensate moisture in coal gas of converter is avoided to become aqueous water and be unfavorable for the normal circulation of coal gas of converter, it also avoid the situation generation of flowmeter 16 because damaging containing a large amount of condensate water, substantially increase job stability, in the present embodiment, described zone of heating 20 is heating tape, so not only easy for installation, greatly reduce workman and install labour intensity, and enterprise's production and application cost is low, in the present embodiment, heat-insulation layer 21 is also coated with outside zone of heating 20, the moisture in the coal gas of converter in sampling process can be made so to be better always vaporous water steam, avoid the condensate moisture in coal gas of converter become aqueous water and be unfavorable for the normal circulation of coal gas of converter further, further increase job stability, in the present embodiment, Nitrogen source gases pipeline 2 is provided with decompression valve 22, nitrogen pressure in Nitrogen source gases pipeline 2 is adjusted to 0.05-0.15MPa by decompression valve 22, the negative pressure draft of generation in ejector 11 can be avoided so excessive, and then effectively avoid the generation of coal gas of converter instability of flow situation in coal gas of converter sampling and oxygen analyzer testing process, improve job stability and security, in the present embodiment, nitrogen pressure in Nitrogen source gases pipeline 2 is adjusted to 0.1MPa by decompression valve 22, this nitrogen pressure can improve job stability better, can avoid the generation of coal gas of converter instability of flow situation in coal gas of converter sampling and oxygen analyzer testing process better, in the present embodiment, positive blowpipe road 10 is also provided with the tensimeter 23 that can show nitrogen pressure in positive blowpipe road 10, can finds better like this and adjust the nitrogen pressure in Nitrogen source gases pipeline 2, improve job stability and security,
Principle of work of the present invention is as follows:
First make decompression valve 22 that the nitrogen pressure in Nitrogen source gases pipeline 2 is adjusted to 0.1MPa, sample phase is taked to keep 45 minutes, the blowback stage keeps the operational mode of 5 minutes, when sampling rank sample, close the second valve 8, and open the first valve 6 simultaneously, 3rd valve 15, flow control valve 14, 4th valve 19 and the 5th valve 24, now, nitrogen in Nitrogen source gases pipeline 2 can inject ejector 11 through positive blowpipe road 10 from the first air intake opening of ejector 11, inject the nitrogen of ejector 11 again from the gas and vapor permeation outlet injection of ejector 11, thus make to produce negative pressure draft in ejector 11, under the effect of negative pressure draft in ejector 11, coal gas of converter in RECOVERY OF CONVERTER GAS house steward 1 can successively through sampling pipe 7, positive blowpipe road 5 enters the gas sample detecting unit 3 of oxygen analyzer 4, then gas sample detecting unit 3 carries out oxygen analysis to the coal gas of converter entered wherein, coal gas of converter after oxygen analysis is drawn out of gas sample detecting unit 3 and enters produce kinds of pipeline 12 under the effect of negative pressure draft, ejector 11 is entered from the second air intake opening of ejector 11 again through produce kinds of pipeline 12, the nitrogen that the coal gas of converter entering ejector 11 can be launched into ejector 11 takes ejector 11 together out of, in sample phase, owing to being provided with flow control valve 14 on positive blowpipe road 5, thus ensure that the stability of coal gas of converter airshed in sampling process, make the detection data of oxygen analyzer 4 unusual fluctuations can not occur in sample phase, make workman accurately can judge the recovery security performance of coal gas of converter according to the detection data of oxygen analyzer 4, when after use a period of time, the blowback stage need be entered when blast cleaning is carried out to sampling pipe 7, first close the first valve 6, 3rd valve 15, flow control valve 14, 4th valve 19 and the 5th valve 24, and open the second valve 8 simultaneously, now, nitrogen in Nitrogen source gases pipeline 2 can enter sampling pipe 7 through blowback pipeline 9, spray from sampling pipe 7 again, thus the cleaning completed sampling pipe 7, when the blowback stage, because positive blowpipe road 10 is closed by the 3rd valve 15, nitrogen in Nitrogen source gases pipeline 2 can not continue to enter ejector 11 again, make in ejector 11, not have negative pressure draft to exist, thus guarantee that oxygen analyzer 4 also can not occur to detect data exception fluctuation when the blowback stage, make workman accurately can judge the recovery security performance of coal gas of converter according to the detection data of oxygen analyzer 4, substantially increase operation stability and security, when just blowing stage and blowback stage, zone of heating 20 is in heated condition all the time, guarantee that coal gas of converter flows through in the process of sampling pipe 7, sample channel 5, oxygen analyzer 4, produce kinds of pipeline 12, ejector 11, outlet pipe 13 and flowmeter 16, moisture in coal gas of converter is always vaporous water steam, avoid the condensate moisture in coal gas of converter become aqueous water and be unfavorable for the normal circulation of coal gas of converter and the normal work of flowmeter 16, substantially increase job stability.The present invention has can make oxygen analyzer that the high advantage of abnormal data fluctuation, job stability and security in use can not occur.
Claims (8)
1. the analysis and detection device of oxygen content in coal gas of converter, comprise RECOVERY OF CONVERTER GAS house steward, Nitrogen source gases pipeline, and be provided with the oxygen analyzer of gas sample detecting unit, the inlet end of gas sample detecting unit of oxygen analyzer is connected with one end of sample channel, the other end of sample channel is connected with one end of sampling pipe by the first valve, the other end of sampling pipe stretches into RECOVERY OF CONVERTER GAS house steward, sampling pipe is by being provided with the blowback pipeline communication Nitrogen source gases pipeline of the second valve, Nitrogen source gases pipeline is communicated with the first air intake opening of ejector by positive blowpipe road, second air intake opening of ejector is connected by the outlet side of produce kinds of pipeline with gas sample detecting unit, the gas and vapor permeation outlet of ejector is connected with outlet pipe, it is characterized in that: on sample channel, be provided with flow control valve, positive blowpipe road is provided with the 3rd valve that can open or close positive blowpipe road.
2. the analysis and detection device of oxygen content in coal gas of converter according to claim 1, it is characterized in that: on sample channel, be provided with the 4th valve that can open or close sample channel, sample channel is also provided with flowmeter, the inlet end of flowmeter is by the first other pipeline communication sample channel, first other pipeline is provided with the 5th valve that can open or close the first other pipeline, and the outlet side of flowmeter is by the sample channel of the second other pipeline communication the 4th between valve and flow control valve.
3. the analysis and detection device of oxygen content in coal gas of converter according to claim 1, is characterized in that: outside sampling pipe, the first valve, sample channel, flow control valve, oxygen analyzer, produce kinds of pipeline, ejector and outlet pipe, be respectively arranged with zone of heating.
4. the analysis and detection device of oxygen content in coal gas of converter according to claim 3, is characterized in that: described zone of heating is heating tape.
5. the analysis and detection device of oxygen content in coal gas of converter according to claim 3, is characterized in that: be also coated with heat-insulation layer outward at zone of heating.
6. the analysis and detection device of oxygen content in coal gas of converter according to claim 1, it is characterized in that: on Nitrogen source gases pipeline, be provided with decompression valve, ducted for Nitrogen source gases nitrogen pressure is adjusted to 0.05-0.15MPa by decompression valve.
7. the analysis and detection device of oxygen content in coal gas of converter according to claim 6, is characterized in that: ducted for Nitrogen source gases nitrogen pressure is adjusted to 0.1MPa by decompression valve.
8. the analysis and detection device of oxygen content in coal gas of converter according to claim 1, is characterized in that: on positive blowpipe road, be also provided with the tensimeter that can show nitrogen pressure in positive blowpipe road.
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| CN201410835910.1A CN104569308B (en) | 2014-12-29 | 2014-12-29 | The analysis and detection device of oxygen content in coal gas of converter |
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| CN201410835910.1A CN104569308B (en) | 2014-12-29 | 2014-12-29 | The analysis and detection device of oxygen content in coal gas of converter |
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| CN113295480A (en) * | 2021-04-30 | 2021-08-24 | 马鞍山钢铁股份有限公司 | Dew point detection sampling device and operation method thereof |
| CN113791128A (en) * | 2021-11-16 | 2021-12-14 | 南京尚中过滤与分析设备有限公司 | Safety alarm system and method for gas concentration in converter gas |
| CN114354503A (en) * | 2021-12-27 | 2022-04-15 | 中冶焦耐(大连)工程技术有限公司 | Automatic maintenance-free gas oxygen content measuring system and method with real-time correcting function |
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