CN105039614A - Combustible gas safety monitoring and controlling device and method for steel slag waste heat pressure hot disintegration - Google Patents
Combustible gas safety monitoring and controlling device and method for steel slag waste heat pressure hot disintegration Download PDFInfo
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- CN105039614A CN105039614A CN201510527040.6A CN201510527040A CN105039614A CN 105039614 A CN105039614 A CN 105039614A CN 201510527040 A CN201510527040 A CN 201510527040A CN 105039614 A CN105039614 A CN 105039614A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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Abstract
The invention relates to a combustible gas safety monitoring and controlling device and method for steel slag waste heat pressure hot disintegration. According to the method, gas components in a pressure hot disintegration tank 1 are detected in real time through a gas analyzer 4; nitrogen is fed into the pressure hot disintegration tank 1 at a certain flow speed within a certain time in the later period of hot disintegration; exhaust valves 9 are opened after nitrogen is fed for a certain time, nitrogen is continuously fed to exhaust the combustible gas in the pressure hot disintegration tank 1, so that the concentration of combustible gas in the pressure hot disintegration tank 1 is lowered to a certain value, and the concentration is kept unit hot disintegration is completed. The combustible gas safety monitoring and controlling device and method have the beneficial effects that safety monitoring and controlling over the combustible gas during steel slag waste heat pressure hot disintegration are achieved technologically, installation operation is simple, independent operation of a PLC system is not influenced, the compatibility with the PLC system is high, and the combustible gas safety monitoring and controlling device and method play an important role in controlling the components of the combustible gas in the pressure hot disintegration tank 1 in the production process and eliminating potential safety hazards.
Description
Technical field
The present invention relates to a kind of steel slag waste heat to have pressure hot vexed inflammable gas security device and method, particularly one to fill nitrogen to discharge inflammable gas in closed tank, make it concentration and be reduced to device and method in limits of explosion.
Background technology
Often produce the slag that 1 ton of steel about produces 0.12 ~ 0.14 ton, within 2014, China's slag generation is about 1.15 hundred million tons, and utilization ratio is 30%, and large steel slag does not have recycling, land occupation, contaminate environment.
Traditional Technology of Steel Slag Processing often adopts the vexed or hot application of pool heat to add crushing-magnetic selection technique.The vexed art breading slag of current heat obtains accreditation in the industry, becomes the prevailing technology of slag processing.It is vexed that steel slag waste heat has the hot vexed system of pressure to compare traditional pool heat, and improve slag processing efficiency and level of automation, is the vexed technique of a kind of heat completely newly, by one of major way developing into slag processing.
The vexed process high-temperature steel slag of heat and water reaction produce a certain amount of inflammable gas, cause potential safety hazard.Therefore, realizing steel slag waste heat has in the hot vexed production process of pressure, and the security of inflammable gas is the prerequisite ensureing that safety in production runs.
The key of inflammable gas security needs wherein inflammable gas concentration to control within limits of explosion.Therefore require in production process, to obtain real-time gas concentration data on the one hand; Also require to define the processing parameter filling nitrogen in the hot vexed tank of pressure simultaneously, guarantee the effective reduction having combustable gas concentration in the hot vexed tank of pressure.
Solve steel slag waste heat and have the safety problem of pressing hot vexed inflammable gas, not only can ensure the safety in production that steel slag waste heat has pressure heat vexed, also for the security of the similar operating mode of other industry provides thinking.
Summary of the invention
Technical scheme of the present invention is as follows:
A kind of steel slag waste heat has the hot vexed inflammable gas security device of pressure, comprising: there are the hot vexed tank of pressure, bleed valve, gas analyzer, nitrogen storage gas tank, vent valve, PLC control system and calculating and indicating system; Hot vexed tank is pressed to be communicated with bleed valve, bleed valve is communicated with gas analyzer, bleed valve is used for drawing sample gas to gas analyzer from the hot vexed tank of pressure, gas analyzer is for detecting acquisition gaseous constituent, and send gaseous constituent to PLC control system, and show in real time in calculating and indicating system; Nitrogen storage gas tank presses hot vexed tank to be communicated with having, before the vexed end of heat, nitrogen in nitrogen storage gas tank has been filled with the hot vexed tank of pressure, vent valve has been arranged on the hot vexed tank of pressure, arrange outward for inflammable gas in the hot vexed tank of pressure will be had, when in the vexed tank composition of gases within of pressure heat shown by calculating and indicating system, inflammable gas content is lower than security level, stop the nitrogen in nitrogen storage gas tank being filled with the hot vexed tank of pressure.
Wherein, described device also comprises air entraining pipe, and air entraining pipe comprises the first air entraining pipe, the second air entraining pipe and the 3rd air entraining pipe; Have pressure hot vexed tank top opening to be communicated with the inlet end of bleed valve by the first air entraining pipe, the exit end of bleed valve is communicated with gas analyzer by the second air entraining pipe, draws gas and arranges through the 3rd air entraining pipe from gas analyzer.
Wherein, also comprise nitrogen tube, nitrogen valve and nitrogen gas stream gauge in described device, nitrogen tube comprises the first nitrogen tube, the second nitrogen tube, the 3rd nitrogen tube and the 4th nitrogen tube; The opening of nitrogen storage gas tank is communicated with the inlet end of nitrogen valve by the first nitrogen tube, the exit end of nitrogen valve is communicated with the inlet end of nitrogen gas stream gauge by the second nitrogen tube, the exit end of nitrogen gas stream gauge is communicated with the inlet end of pressing hot vexed tank by the 3rd nitrogen tube, then through the 4th nitrogen tube, nitrogen has been filled with the hot vexed tank of pressure, wherein the 4th nitrogen tube extends along there being the length direction of pressing hot vexed tank.
Wherein, described device also comprises data transmission line, and data transmission line comprises first data transmission line, the second data transmission line, the 3rd data transmission line, the 4th data transmission line, the 5th data transmission line and the 6th data transmission line; Bleed valve connects PLC control system by first data transmission line, gas analyzer connects PLC control system by the second data transmission line, nitrogen valve connects PLC control system by the 3rd data transmission line, nitrogen gas stream gauge connects PLC control system by the 4th data transmission line, vent valve connects PLC control system by the 5th data transmission line, and PLC control system connects calculating and indicating system through the 6th data transmission line.
Wherein, in gaseous constituent, inflammable gas is hydrogen, fills after nitrogen terminates and has hydrogen volume content in the hot vexed tank composition of gases within of pressure lower than 3%, namely to represent that inflammable gas content is lower than security level.
Wherein, calculating and indicating system (12) are Computer display platform, and PLC control system (10) is for controlling bleed valve (2), nitrogen valve (6) and vent valve (9).
Wherein, described bleed valve (2), nitrogen valve (6) and vent valve (9) are motor-driven control valve.
Adopt aforementioned means steel slag waste heat to be had to a method of pressing hot sulks body security, comprise the steps:
(1) there being pressure hot vexed tank top opening, aperture is regulated to draw sample gas by bleed valve;
(2) sample gas is detected by gas analyzer and obtains gaseous constituent, and sends gaseous constituent to PLC control system by data transmission line, and shows in real time in calculating and indicating system, observes gasometry result;
(3) carry out filling nitrogen bleeding in the heat vexed process later stage, before the vexed end of heat, open nitrogen valve, by nitrogen tube, nitrogen is filled with the hot vexed tank of pressure, open vent valve after filling nitrogen 3-8 minute, have inflammable gas in the hot vexed tank of pressure to arrange through vent valve outward, fill nitrogen to hot vexed process continuously and terminate, when in the vexed tank composition of gases within of pressure heat shown by calculating and indicating system, inflammable gas content is lower than security level, stop the nitrogen in nitrogen storage gas tank being filled with the hot vexed tank of pressure.
Wherein, inflammable gas is hydrogen, fills nitrogen and opens vent valve after 5 minutes; Fill nitrogen process parameter as follows:
(1) start to fill the nitrogen time: before hot vexed end 10 ~ 30 minutes;
(2) nitrogen flow rate: 30 ~ 60m3/h;
(3) nitrogen duration is filled: 10 ~ 30 minutes;
(4) filling after nitrogen terminates has hydrogen volume content in hot vexed tank (1) composition of gases within of pressure lower than 3%, namely to represent that inflammable gas content is lower than security level.
Advantage of the present invention be on device and method on achieve steel slag waste heat have pressure hot vexed inflammable gas security, install simple to operate, do not affect the independent operating of PLC system, and it is compatible strong with PLC system, technically achieve the security of pressing hot vexed inflammable gas, there is combustible gas component in the hot vexed tank of pressure to controlling in time in production process, getting rid of potential safety hazard and playing an important role.
Accompanying drawing explanation
Fig. 1 steel slag waste heat has the hot vexed inflammable gas security device schematic diagram of pressure
Embodiment
A kind of steel slag waste heat has the hot vexed inflammable gas security device of pressure as shown in Figure 1, a kind of steel slag waste heat has the hot vexed inflammable gas security device of pressure, comprising: there are the hot vexed tank 1 of pressure, bleed valve 2, air entraining pipe 3, gas analyzer 4, nitrogen storage gas tank 5, nitrogen valve 6, nitrogen gas stream gauge 7, nitrogen tube 8, vent valve 9, data transmission line 10, PLC control system 11 and calculate and indicating system 12.In described device, air entraining pipe 3 comprises the first air entraining pipe, the second air entraining pipe and the 3rd air entraining pipe; Have the open top of pressure hot vexed tank 1 to be connected the inlet end of bleed valve 2 by the first air entraining pipe 3, the exit end of bleed valve 2 connects gas analyzer 4 by the second air entraining pipe 3, draws gas and arranges through the 3rd air entraining pipe 3 from gas analyzer 4.In described device, nitrogen tube 8 comprises the first nitrogen tube, the second nitrogen tube, the 3rd nitrogen tube and the 4th nitrogen tube; The opening of nitrogen storage gas tank 5 connects the inlet end of nitrogen valve 6 by the first nitrogen tube 8, the exit end of nitrogen valve 6 connects the inlet end of nitrogen gas stream gauge 7 by the second nitrogen tube 8, the exit end of nitrogen gas stream gauge 7 is connected with the inlet end of pressing hot vexed tank 1 by the 3rd nitrogen tube 8, then through the 4th nitrogen tube 8, nitrogen has been filled with the hot vexed tank 1 of pressure.In described device, data transmission line 10 comprises first data transmission line, the second data transmission line, the 3rd data transmission line, the 4th data transmission line, the 5th data transmission line and the 6th data transmission line; Bleed valve 2 connects PLC control system 11 by first data transmission line 10, gas analyzer 4 connects PLC control system 11 by the second data transmission line 10, nitrogen valve 6 connects PLC control system 10 by the 3rd data transmission line 10, nitrogen gas stream gauge 7 connects PLC control system 11 by the 4th data transmission line 10, vent valve 9 connects PLC control system 11 by the 5th data transmission line 10, and PLC control system 11 connects calculating and indicating system 12 through the 6th data transmission line 10.In described device, vent valve 9 has been arranged on hot vexed tank 1 top of pressure, arranges outward for there being inflammable gas in the hot vexed tank 1 of pressure.In described device, calculating and indicating system 12 are Computer display platform.In described device, bleed valve 2, nitrogen valve 6 and vent valve 9 are motor-driven control valve.
Steel slag waste heat has a method of pressing hot vexed inflammable gas security, comprises the steps: that (1) is there being the open top of pressure hot vexed tank 1, regulates aperture to draw sample gas by bleed valve 2; (2) sample gas is detected by gas analyzer 4 and obtains gaseous constituent, and sends gaseous constituent to PLC control system 11 by data transmission line 10, and shows in real time in calculating and indicating system 12, observes gasometry result.(3) carry out filling nitrogen bleeding in the heat vexed process later stage, before the vexed end of heat, open nitrogen valve 6, by nitrogen tube 8, nitrogen is filled with the hot vexed tank 1 of pressure, fill nitrogen and open vent valve 9 after 5 minutes, have the outer row of gas footpath vent valve 9 in the hot vexed tank 1 of pressure, fill nitrogen to hot vexed process continuously and terminate, shown by comparing calculation and indicating system 12, gained gaseous constituent tested by gas analyzer 4, to guarantee to have in hot vexed tank 1 composition of gases within of pressure hydrogen content lower than certain level.(4) nitrogen process parameter is filled concrete: start to fill the nitrogen time: before hot vexed end 10 ~ 30 minutes; Nitrogen flow rate: 30 ~ 60m
3/ h (under standard state); Fill nitrogen duration: 10 ~ 30 minutes; Fill and to have in hot vexed tank 1 composition of gases within of pressure hydrogen volume content after nitrogen terminates lower than 3%.
Claims (9)
1. steel slag waste heat has the hot vexed inflammable gas security device of pressure, comprising: there are the hot vexed tank (1) of pressure, bleed valve (2), gas analyzer (4), nitrogen storage gas tank (5), vent valve (9), PLC control system (11) and calculate and indicating system (12); Hot vexed tank (1) is pressed to be communicated with bleed valve (2), bleed valve (2) is communicated with gas analyzer (4), bleed valve (2) is for drawing sample gas in gas analyzer (4) from the hot vexed tank (1) of pressure, gas analyzer (4) is for detecting acquisition gaseous constituent, and gaseous constituent to be sent to PLC control system (11), and in calculating and the upper display in real time of indicating system (12); Nitrogen storage gas tank (5) presses hot vexed tank (1) to be communicated with having, before the vexed end of heat, nitrogen in nitrogen storage gas tank (5) has been filled with the hot vexed tank (1) of pressure, vent valve (9) has been arranged on the hot vexed tank (1) of pressure, arrange outward for the interior inflammable gas of the hot vexed tank (1) of pressure will be had, when in the vexed tank composition of gases within of pressure heat shown by calculating and indicating system (12), inflammable gas content is lower than security level, stop the nitrogen in nitrogen storage gas tank (5) being filled with the hot vexed tank (1) of pressure.
2. device according to claim 1, is characterized in that, described device also comprises air entraining pipe (3), and air entraining pipe (3) comprises the first air entraining pipe, the second air entraining pipe and the 3rd air entraining pipe; The open top of pressure hot vexed tank (1) is had to be communicated with the inlet end of bleed valve (2) by the first air entraining pipe (3), the exit end of bleed valve (2) is communicated with gas analyzer (4) by the second air entraining pipe (3), draws gas and arranges through the 3rd air entraining pipe (3) from gas analyzer (4).
3. device according to claim 1 and 2, it is characterized in that, also comprise nitrogen tube (8), nitrogen valve (6) and nitrogen gas stream gauge (7) in described device, nitrogen tube (8) comprises the first nitrogen tube, the second nitrogen tube, the 3rd nitrogen tube and the 4th nitrogen tube; The opening of nitrogen storage gas tank (5) is communicated with the inlet end of nitrogen valve (6) by the first nitrogen tube (8), the exit end of nitrogen valve (6) is communicated with the inlet end of nitrogen gas stream gauge (7) by the second nitrogen tube (8), the exit end of nitrogen gas stream gauge (7) is communicated with the inlet end of pressing hot vexed tank (1) by the 3rd nitrogen tube (8), then through the 4th nitrogen tube (8), nitrogen has been filled with the hot vexed tank (1) of pressure, wherein the 4th nitrogen tube (8) extends along there being the length direction of pressing hot vexed tank (1).
4. according to the device one of claim 1-3 Suo Shu, it is characterized in that, described device also comprises data transmission line (10), and data transmission line (10) comprises first data transmission line, the second data transmission line, the 3rd data transmission line, the 4th data transmission line, the 5th data transmission line and the 6th data transmission line, bleed valve (2) connects PLC control system (11) by first data transmission line (10), gas analyzer (4) connects PLC control system (11) by the second data transmission line (10), nitrogen valve (6) connects PLC control system (10) by the 3rd data transmission line (10), nitrogen gas stream gauge (7) connects PLC control system (11) by the 4th data transmission line (10), vent valve (9) connects PLC control system (11) by the 5th data transmission line (10), PLC control system (11) connects calculating and indicating system (12) through the 6th data transmission line (10).
5. according to the device one of claim 1-4 Suo Shu, it is characterized in that, in gaseous constituent, inflammable gas is hydrogen, fills after nitrogen terminates and has hydrogen volume content in hot vexed tank (1) composition of gases within of pressure lower than 3%, namely to represent that inflammable gas content is lower than security level.
6. according to the device one of claim 1-5 Suo Shu, it is characterized in that, calculating and indicating system (12) are Computer display platform, and PLC control system (10) is for controlling bleed valve (2), nitrogen valve (6) and vent valve (9).
7. according to the device one of claim 1-6 Suo Shu, it is characterized in that, described bleed valve (2), nitrogen valve (6) and vent valve (9) are motor-driven control valve.
8. adopt one of claim 1-7 described device steel slag waste heat to be had to a method of pressing hot sulks body security, it is characterized in that, comprise the steps:
(1) there being the open top of pressure hot vexed tank (1), aperture is regulated to draw sample gas by bleed valve (2);
(2) sample gas is detected by gas analyzer (4) and obtains gaseous constituent, and send gaseous constituent to PLC control system (11) by data transmission line (10), and in calculating and the upper display in real time of indicating system (12), observe gasometry result;
(3) carry out filling nitrogen bleeding in the heat vexed process later stage, before the vexed end of heat, open nitrogen valve (6), by nitrogen tube (8), nitrogen is filled with the hot vexed tank (1) of pressure, vent valve (9) is opened after filling nitrogen 3-8 minute, the interior inflammable gas of the hot vexed tank (1) of pressure is had to arrange through vent valve (9) outward, fill nitrogen to hot vexed process continuously to terminate, when in the vexed tank composition of gases within of pressure heat shown by calculating and indicating system (12), inflammable gas content is lower than security level, stop the nitrogen in nitrogen storage gas tank (5) being filled with the hot vexed tank (1) of pressure.
9. method according to claim 8, is characterized in that, inflammable gas is hydrogen, fills nitrogen and opens vent valve (9) after 5 minutes; Fill nitrogen process parameter as follows:
(1) start to fill the nitrogen time: before hot vexed end 10 ~ 30 minutes;
(2) nitrogen flow rate: 30 ~ 60m
3/ h;
(3) nitrogen duration is filled: 10 ~ 30 minutes;
(4) filling after nitrogen terminates has hydrogen volume content in hot vexed tank (1) composition of gases within of pressure lower than 3%, namely to represent that inflammable gas content is lower than security level.
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| CN201510527040.6A CN105039614A (en) | 2015-08-25 | 2015-08-25 | Combustible gas safety monitoring and controlling device and method for steel slag waste heat pressure hot disintegration |
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| CN201510527040.6A CN105039614A (en) | 2015-08-25 | 2015-08-25 | Combustible gas safety monitoring and controlling device and method for steel slag waste heat pressure hot disintegration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106277951A (en) * | 2016-07-21 | 2017-01-04 | 沧州中铁装备制造材料有限公司 | Steel slag deep processing brickmaking technology |
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| CN102230036A (en) * | 2011-04-02 | 2011-11-02 | 中冶建筑研究总院有限公司 | Waste-heat pressure closed-loop thermal treatment method for molten steel slag |
| CN104267158A (en) * | 2014-10-22 | 2015-01-07 | 中冶建筑研究总院有限公司 | Steel slag pressurized hot and stuffy gas composition online monitoring device and method |
| CN104342525A (en) * | 2014-10-23 | 2015-02-11 | 江苏永钢集团有限公司 | Steel slag thermally stewing device with anti-explosion valve |
| CN104342523A (en) * | 2014-10-23 | 2015-02-11 | 江苏永钢集团有限公司 | Slag stewing device used for thermally stewing steel slag |
| CN104372118A (en) * | 2014-10-23 | 2015-02-25 | 江苏永钢集团有限公司 | Spraying steel slag heat-stewing steam treatment device with explosion-proof stewing cover |
| CN204981915U (en) * | 2015-08-25 | 2016-01-20 | 中冶节能环保有限责任公司 | Slag waste heat has vexed combustible gas safety prevention and control device of heat of pressure |
-
2015
- 2015-08-25 CN CN201510527040.6A patent/CN105039614A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102230036A (en) * | 2011-04-02 | 2011-11-02 | 中冶建筑研究总院有限公司 | Waste-heat pressure closed-loop thermal treatment method for molten steel slag |
| CN104267158A (en) * | 2014-10-22 | 2015-01-07 | 中冶建筑研究总院有限公司 | Steel slag pressurized hot and stuffy gas composition online monitoring device and method |
| CN104342525A (en) * | 2014-10-23 | 2015-02-11 | 江苏永钢集团有限公司 | Steel slag thermally stewing device with anti-explosion valve |
| CN104342523A (en) * | 2014-10-23 | 2015-02-11 | 江苏永钢集团有限公司 | Slag stewing device used for thermally stewing steel slag |
| CN104372118A (en) * | 2014-10-23 | 2015-02-25 | 江苏永钢集团有限公司 | Spraying steel slag heat-stewing steam treatment device with explosion-proof stewing cover |
| CN204981915U (en) * | 2015-08-25 | 2016-01-20 | 中冶节能环保有限责任公司 | Slag waste heat has vexed combustible gas safety prevention and control device of heat of pressure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106277951A (en) * | 2016-07-21 | 2017-01-04 | 沧州中铁装备制造材料有限公司 | Steel slag deep processing brickmaking technology |
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