CN103553079A - Explosion-proof treatment method of bared conductor of sodium cyanide cracking furnace - Google Patents
Explosion-proof treatment method of bared conductor of sodium cyanide cracking furnace Download PDFInfo
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- CN103553079A CN103553079A CN201310528335.6A CN201310528335A CN103553079A CN 103553079 A CN103553079 A CN 103553079A CN 201310528335 A CN201310528335 A CN 201310528335A CN 103553079 A CN103553079 A CN 103553079A
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Abstract
The invention discloses an explosion-proof treatment method of a bared conductor of a sodium cyanide cracking furnace. In the process of producing sodium cyanide by cracking light oil, a part of electrified conductors is bared in the explosive gas environment; once gas is leaked in the production process, explosion is easily caused. According to the explosion-proof treatment method disclosed by the invention, after adopting the measures of locally ventilating through positive pressure and reducing the regional explosive district environment, the explosion-proof problem of non-explosion-proof electric equipment can be solved; continuous and safe operation of non-explosion-proof facilities in the production process and personal safety of operation and routing inspection people can be ensured; the property safety of enterprises is also ensured; the safety in the production process is increased, and therefore, good economic benefits are brought about for enterprises.
Description
Technical field
The invention belongs to chemical field, relate to the Explosion-Proof of charged facility in Sodium Cyanide Production process; The present invention also can be used for the Explosion-proof Design of the energized conductor in other similar engineering blast area.
Background technology
Sodium cyanide is a kind of severe poisonous chemicals, adopt in light oil cracking explained hereafter, there is light oil, prussic acid, hydrogen, the inflammable and explosive medium such as liquefied ammonia, belong to typical explosive gas atmosphere, and the power supply of light oil cracking stove is low voltage, high electric current facility, voltage is 250～300V, electric current is 4000～5000A, in connecing the process of electric furnace electrode, there is part energized conductor exposed: mainly to comprise flexible-cable and copper bar and anchor ear junction, anchor ear and electrode bar junction etc., above-mentioned bare exposed conductor place is owing to there being hard arc, often there are in process of production the dangerous phenomenons such as detonation to produce, there is further explosion caused possibility, there is great potential safety hazard.At present both at home and abroad each manufacturer does not adopt an effective measure to above-mentioned situation, to related personnel's such as operating, patrol and examine life, business property is all caused to great security threat.The present invention takes continuous positive draft measure, and non-blast area is reduced to in above-mentioned position, has greatly improved the security at above-mentioned position.
Summary of the invention
The object of the invention is to take effective measures, make cannot select in explosive production area the regional area of explosion-proof electric apparatus to reduce explosion hazard, stop potential safety hazard, realize safety in production.
Technical scheme of the present invention is as follows:
The explosion-proof processing method of pyrolyzer bare exposed conductor: adopt the continuous positive draft measure of rare gas element, the explosion gases in air-isolation, makes part reduce to non-explosive hazard environment.
To comprising exposed charged the leading of busbar exposed area and flexible-cable junction, flexible-cable and electrodes conduct anchor ear junction, electrode anchor ear and electrode bar junction, utilize rare gas element positive draft as continuous in nitrogen.
By nitrogen header pipe (2), in guard box, pass into nitrogen; make the explosion gas in guard box discharge guard box through pneumatic outlet (12); and in guard box, be full of nitrogen, form non-blast area, thereby the exposed energized conductor in guard box is formed to effective protection.
The nitrogen passing into is malleation: nitrogen bleed pressure 0.05～0.15MPaG, house steward's caliber 15mm～32mm, to blowing, a near caliber diminishes.
Guard box adopts nonmetal insulation material material to make, and guard box structure is: make the position of gas inlet and outlet by 90 degree distribution design, avoid gas short circuit in guard box; Pneumatic outlet inserts a segment distance in casing, makes nitrogen be full of whole casing, and explosion gas is all discharged, and guarantees that casing inner compartment forms non-blast area.
Guard box access source of the gas, according to the situation of access place, adopts and is fixedly connected with flexible-cable (6) junction busbar exposed area; To flexible-cable and electrodes conduct anchor ear (7) junction and electrode anchor ear and electrode bar (5) junction employing hose connection (10); The adaptation feature that electrode bar moves up and down in operational process.
The present invention blows low-pressure nitrogen to the above-mentioned regional sustained of exposed energized conductor that exists: nitrogen bleed pressure 0.05～0.15MPaG, nitrogen header pipe caliber 15mm～32mm, and near the point of extremely blowing, a caliber diminishes, and to improve gas velocity, strengthens replacement result;
And the feature moving up and down for electrode anchor ear, the access flue that blows electrode anchor ear place adopts hose connection; And adopt nonmetal insulation material material; make a guard box structure; by the energized conductor exposed region of the non-explosion-proof type in several places above sodium cyanide pyrolyzer upper operating platform; isolate with explosive gas atmosphere; refer to Fig. 1～Fig. 4; make aforementioned region implode gas dilution so that reduce to non-anti-explosion area, effectively prevent exploding occurs, thereby realizes safety in production.Advantage of the present invention is: with lower cost, realized the Explosion-Proof of the non-blasting protection facilities in production process, got rid of potential safety hazard, and this invention is workable.
Desired result of the present invention: by taking local positive draft of the present invention, reducing after the measure of regional explosion partitioned environment, can guarantee that the non-blasting protection facilities in production process continues safe operation, operation and patrol officer's personnel safety, and can guarantee business property safety, improve the security of production process, thereby brought good economic benefit for enterprise.
Accompanying drawing explanation
Fig. 1: sodium cyanide pyrolyzer electric utility technological processing for explosion protection feature figure
Fig. 2: sodium cyanide pyrolyzer electric utility does not carry out technological processing for explosion protection feature figure
Fig. 3: positive-pressure explosion-proof is processed detail drawing
Fig. 4: guard box place vertical view
Wherein:
1: enclosed busbar, 2: nitrogen header pipe, 3: energized conductor exposed region (comprising busbar exposed area and flexible-cable junction, flexible-cable and electrodes conduct anchor ear junction, electrode anchor ear and electrode bar junction), 4: sodium cyanide pyrolyzer upper operating platform, 5: pyrolyzer electrode bar, 6: flexible cable bundle, 7: electrodes conduct anchor ear, 8: guard box, 9: guard box, 10: hose connection, 11: gas feed, 12: pneumatic outlet.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings below:
As shown in Figure 2, in light oil cracking method Sodium Cyanide Production process, light oil cracking stove and related facility thereof are positioned at explosion-proof area, the exposed energized conductors 3 such as the busbar exposed area on sodium cyanide pyrolyzer upper operating platform 4 and flexible-cable junction, flexible-cable and electrodes conduct anchor ear junction, electrode anchor ear and electrode bar junction, in the situation that not taking any measure, be extremely dangerous.As shown in accompanying drawing 1, accompanying drawing 3; the present invention intends adopting nonmetal insulation material material to make after two guard boxs (8 and 9) protection; by nitrogen header pipe 2 to passing into nitrogen in guard box: nitrogen bleed pressure 0.05～0.15MPaG, house steward's caliber 15mm～32mm; to blowing, a near caliber diminishes; to improve gas velocity, strengthen replacement result.Because the pressure of nitrogen is malleation and is blown at a high speed guard box; we can guarantee that the explosion gas in whole guard box passes through pneumatic outlet 12 in the short period and discharges guard boxs; and in guard box, be full of nitrogen; form non-blast area, thereby the exposed energized conductor in guard box is formed to effective protection.As shown in Figure 3 at nitrogen during through gas feed 13 access guard box; according to the exposed energized conductor feature of position separately; busbar exposed area and flexible-cable 6 junctions to sealing busbar 1 end; be that guard box 9 places employing is fixedly connected with; to flexible-cable and electrodes conduct anchor ear 7 junctions and electrode anchor ear and electrode bar 5 junctions; it is hose connection 10 to be that guard box 8 places adopt, to adapt to the feature that electrode bar moves up and down in operational process.As shown in Figure 4; the structure of the guard box of the present invention's design; one is to make the position distribution of gas inlet and outlet reasonable; can effectively avoid gas short circuit in guard box; the 2nd, make pneumatic outlet insert a segment distance in casing; can make like this nitrogen be full of whole casing, explosion gas is all discharged, guarantee that casing inner compartment forms non-blast area.After the inventive method is processed, the sustainable steady running of exposed energized conductor in above-mentioned explosion-proof area.
In actual Sodium Cyanide Production; we adopt the method; to selecting exposed charging zone such as the access busbar exposed area of light oil cracking stove power supply of explosion-proof electric apparatus facility and flexible-cable junction 3, flexible-cable and anchor ear and anchor ear and electrode bar junction 3 etc.; adopt a kind of special nonmetal insulation material material to make after the guard box 8 and guard box 9 protections of two special constructions; continue to blow low-pressure nitrogen: bleed pressure 0.1MPaG, house steward 2 caliber 25mm; to blowing, a near caliber becomes 15mm; to improve gas velocity, strengthen replacement result.By the energized conductor exposed region of non-explosion-proof type and explosive gas atmosphere isolation, make aforementioned region implode gas basically eliminate, they are reduced to non-anti-explosion area, effectively prevented that blast from occurring, and realized safety in production.
Claims (6)
1. an explosion-proof processing method for sodium cyanide pyrolyzer bare exposed conductor, is characterized in that adopting the continuous positive draft measure of rare gas element, and the explosion gases in air-isolation, makes part reduce to non-explosive hazard environment.
2. 1 treatment process as claimed in claim, is characterized in that: to comprising exposed charged the leading of busbar exposed area and flexible-cable junction, flexible-cable and electrodes conduct anchor ear junction, electrode anchor ear and electrode bar junction, utilize rare gas element positive draft as continuous in nitrogen.
3. 1 treatment process as claimed in claim; it is characterized in that in guard box, passing into nitrogen by nitrogen header pipe (2); make the explosion gas in guard box discharge guard box through pneumatic outlet (12); and in guard box, be full of nitrogen; form non-blast area, thereby the exposed energized conductor in guard box is formed to effective protection.
4. as claim 1 treatment process, it is characterized in that the nitrogen passing into is malleation: nitrogen bleed pressure 0.05～0.15MPaG, house steward's caliber 15mm～32mm, a near caliber diminishes to blowing.
5. as claim 1 treatment process, it is characterized in that guard box adopts nonmetal insulation material material to make, guard box structure is: make the position of gas inlet and outlet by 90 degree distribution design, avoid gas short circuit in guard box; Pneumatic outlet inserts a segment distance in casing, makes nitrogen be full of whole casing, and explosion gas is all discharged, and guarantees that casing inner compartment forms non-blast area.
6. as claim 1 treatment process, it is characterized in that guard box access source of the gas, according to the situation of access place, busbar exposed area is adopted and is fixedly connected with flexible-cable (6) junction; To flexible-cable and electrodes conduct anchor ear (7) junction and electrode anchor ear and electrode bar (5) junction employing hose connection (10); The adaptation feature that electrode bar moves up and down in operational process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310528335.6A CN103553079A (en) | 2013-10-30 | 2013-10-30 | Explosion-proof treatment method of bared conductor of sodium cyanide cracking furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310528335.6A CN103553079A (en) | 2013-10-30 | 2013-10-30 | Explosion-proof treatment method of bared conductor of sodium cyanide cracking furnace |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201058864Y (en) * | 2007-05-24 | 2008-05-14 | 中国石油兰州石油化工公司 | Light oil cracking reactor |
| CN102553108A (en) * | 2012-02-03 | 2012-07-11 | 无锡博睿奥克电气有限公司 | Orifice-plate spark particle obstructing device |
| CN202943055U (en) * | 2012-12-07 | 2013-05-22 | 北京前锋科技有限公司 | Motor positive pressure purging control device |
-
2013
- 2013-10-30 CN CN201310528335.6A patent/CN103553079A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201058864Y (en) * | 2007-05-24 | 2008-05-14 | 中国石油兰州石油化工公司 | Light oil cracking reactor |
| CN102553108A (en) * | 2012-02-03 | 2012-07-11 | 无锡博睿奥克电气有限公司 | Orifice-plate spark particle obstructing device |
| CN202943055U (en) * | 2012-12-07 | 2013-05-22 | 北京前锋科技有限公司 | Motor positive pressure purging control device |
Non-Patent Citations (2)
| Title |
|---|
| 李雪峰: "防爆电气知识(电机选型)", 《HTTP://WINDYLXF.SPACES.EEPW.COM.CN/ARTICLES/ARTICLE/ITEM/87872》, 29 June 2011 (2011-06-29) * |
| 邢薇薇等: "轻油裂解法生产***的安全设计", 《天津化工》, 31 March 2012 (2012-03-31) * |
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Application publication date: 20140205 |