CN103395745B - Prevent hydrogen chloride gas from crossing the interlocking signal system and method for chlorine - Google Patents
Prevent hydrogen chloride gas from crossing the interlocking signal system and method for chlorine Download PDFInfo
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- CN103395745B CN103395745B CN201310346448.4A CN201310346448A CN103395745B CN 103395745 B CN103395745 B CN 103395745B CN 201310346448 A CN201310346448 A CN 201310346448A CN 103395745 B CN103395745 B CN 103395745B
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Abstract
The present invention relates to chlor-alkali production technology field, specifically disclose a kind of interlocking signal system and method preventing hydrogen chloride gas from crossing chlorine, described system comprises pressure transmitter, hydrogen control valve, chlorine control valve, air delivery valve, does sour valve and Controlling System, described method is the interlocking value of default hydrogen pressure, detect hydrogen pressure by pressure transmitter, control the switch of each valve according to the hydrogen-pressure force value detected.The present invention can prevent from producing unburnt chlorine in the building-up process of hydrogen chloride gas; control hydrogen chloride gas timely and cross chlorine; the serious accidents such as the burning that the acetylene reaction avoiding free chlorine excessive in hydrogenchloride and synthesizing chloroethylene causes and blast; hydrogen chloride synthetic furnace and following apparatus thereof are played a protective role; simultaneously; decrease labor force, achieve the object of optimization personnel, ensure that security of system, stable, continuous seepage.
Description
Technical field
The present invention relates to chlor-alkali production technology field, particularly relate to a kind of when preventing hydrogen chloride synthesis hydrogen chloride gas cross the interlocking signal system and method for chlorine.
Background technology
In process of production, hydrogen and chlorine synthetic furnace combustion generate hydrogenchloride be together with extremely crucial production link.If it is improper that hydrogen and chlorine proportioning adjust, can cause in hydrogenchloride containing unburnt chlorine (being called for short " crossing chlorine "), these chlorine can be fed in VCM synthesis device with hydrogen chloride gas, when the concentration of chlorine exceedes certain value, excessive free chlorine can with the acetylene generation vigorous reaction of synthesizing chloroethylene, cause the serious accidents such as burning and blast, bring very big security threat to production work.When there is chlorine phenomenon in existing hydrogen chloride synthetic furnace, operator cannot effectively regulate usual within a short period of time, cannot control hydrogen chloride gas in time and cross chlorine, thus cannot avoid the generation of above-mentioned serious accident.
Summary of the invention
(1) technical problem that will solve
The object of this invention is to provide a kind of interlocking signal system and method preventing hydrogen chloride gas from crossing chlorine, to prevent because in hydrogen chloride gas, chlorine content is excessive, the generation of the security incidents such as the burning caused and blast.
(2) technical scheme
In order to solve the problems of the technologies described above, the invention provides a kind of interlocking signal system preventing hydrogen chloride gas from crossing chlorine, comprise pressure transmitter, hydrogen control valve, chlorine control valve, air delivery valve, do sour valve and Controlling System, described pressure transmitter is located on the hydrogen gas pipe of hydrogen chloride synthetic furnace, in the hydrogen gas pipe that described hydrogen control valve and chlorine control valve are located at hydrogen chloride synthetic furnace respectively and chlorine inlet pipe, described air delivery valve and make sour valve and be all located on the escape pipe of hydrogen chloride synthetic furnace, described Controlling System is connected with pressure transmitter and each valve respectively.
Preferably, one end of described air delivery valve is connected with the escape pipe of hydrogen chloride synthetic furnace, and the other end is connected with VCM synthesis device, described in make sour valve the escape pipe of one end and hydrogen chloride synthetic furnace be connected, the other end is connected with the resorber manufacturing hydrochloric acid.
Preferably, described hydrogen control valve comprises hydrogen regulating valve and hydrogen trip valve, and described chlorine control valve comprises chlorine variable valve and chlorine trip valve.
Preferably, described hydrogen trip valve is relative to the hydrogen inlet of hydrogen regulating valve near hydrogen chloride synthetic furnace, and described chlorine trip valve is relative to the chlorine inlet mouth of chlorine variable valve near hydrogen chloride synthetic furnace.
Present invention also offers a kind of method preventing hydrogen chloride gas from crossing chlorine, comprise the following steps:
S1. the interlocking value of hydrogen pressure in the hydrogen gas pipe of a hydrogen chloride synthetic furnace is preset in the controls, the standard value of hydrogen pressure in hydrogen gas pipe when described interlocking value normally works lower than hydrogen chloride synthetic furnace;
S2. detected the hydrogen pressure of the hydrogen gas pipe of hydrogen chloride synthetic furnace by pressure transmitter, and the data detected are transferred to Controlling System;
S3. the take-off equipment of hydrogen and chlorine is adjusted, the hydrogen gas pipe of hydrogen chloride synthetic furnace and the gaseous tension of chlorine inlet pipe is made to reach standard value, now, hydrogen regulating valve, hydrogen trip valve, chlorine variable valve, chlorine trip valve and air delivery valve are opened, make sour valve to close, hydrogen chloride synthetic furnace normally works, and hydrogen chloride gas is sent to VCM synthesis device, synthesizing chloroethylene gas;
S4. when the hydrogen-pressure force value of the hydrogen gas pipe of the hydrogen chloride synthetic furnace that pressure transmitter detects is lower than the interlocking value preset, Controlling System controls hydrogen regulating valve, hydrogen trip valve, chlorine variable valve, chlorine trip valve and air delivery valve and closes, make sour valve to open, hydrogen chloride gas is sent to resorber, high purity hydrochloric acid after absorbing with water, now, the take-off equipment of adjustment hydrogen and chlorine, increases the hydrogen pressure in the hydrogen gas pipe of hydrogen chloride synthetic furnace;
S5. when the hydrogen-pressure force value of the hydrogen gas pipe of the hydrogen chloride synthetic furnace that pressure transmitter detects is higher than the interlocking value preset, Controlling System controls hydrogen regulating valve, hydrogen trip valve, chlorine variable valve, chlorine trip valve and air delivery valve and opens, make sour valve to close, hydrogen chloride synthetic furnace continues normal work.
Preferably, described Controlling System is DCS Controlling System, it receives the data of the pressure transmitter of multiple hydrogen chloride synthetic furnace simultaneously, and controls hydrogen regulating valve, hydrogen trip valve, chlorine variable valve, chlorine trip valve, the air delivery valve of corresponding multiple hydrogen chloride synthetic furnaces simultaneously and make sour valve.
(3) beneficial effect
The interlocking signal system and method preventing hydrogen chloride gas from crossing chlorine of the present invention produces interlocking signal according to the change of hydrogen pressure in the hydrogen gas pipe of hydrogen chloride synthetic furnace, by Controlling System regulating and controlling valve, trip valve, air delivery valve and the switch making sour valve etc., prevent from producing unburnt chlorine in the building-up process of hydrogen chloride gas, control hydrogen chloride gas timely and cross chlorine, the serious accidents such as the burning that the acetylene reaction avoiding free chlorine excessive in hydrogenchloride and synthesizing chloroethylene causes and blast, hydrogen chloride synthetic furnace and following apparatus thereof are played a protective role, simultaneously, decrease labor force, achieve the object of optimization personnel, ensure that security of system, stable, continuous seepage.
Accompanying drawing explanation
Fig. 1 is that the hydrogen chloride gas that prevents of the embodiment of the present invention crosses the structure iron of the interlocking signal system of chlorine.
In figure, 1: pressure transmitter; 2: hydrogen regulating valve; 3: chlorine variable valve; 4: hydrogen trip valve; 5: chlorine trip valve; 6: air delivery valve; 7: make sour valve; 8: hydrogen chloride synthetic furnace.
Embodiment
Below in conjunction with drawings and Examples, embodiments of the present invention are described in further detail.Following examples for illustration of the present invention, but can not be used for limiting the scope of the invention.
As shown in Figure 1, the interlocking signal system that the placement hydrogen chloride gas of the present embodiment crosses chlorine comprises pressure transmitter 1, hydrogen control valve, chlorine control valve, air delivery valve 6, does sour valve 7 and Controlling System.Pressure transmitter 1 is located on the hydrogen gas pipe of hydrogen chloride synthetic furnace 8, for detecting the hydrogen pressure in hydrogen gas pipe; Hydrogen control valve comprises and is located at hydrogen regulating valve 2 on the hydrogen gas pipe of hydrogen chloride synthetic furnace 8 and hydrogen trip valve 4, hydrogen regulating valve 2 is for regulating the air input of hydrogen, hydrogen trip valve 4 for cutting off or opening hydrogen gas pipe, the position of hydrogen trip valve 4 relative to the position of hydrogen regulating valve 2 closer to the hydrogen inlet in hydrogen chloride synthetic furnace 8; Chlorine control valve comprises and is located at chlorine variable valve 3 in the chlorine inlet pipe of hydrogen chloride synthetic furnace 8 and chlorine trip valve 5, chlorine variable valve 3 is for regulating the air input of chlorine, chlorine trip valve 5 for cutting off or opening chlorine inlet pipe, the position of chlorine trip valve 5 relative to the position of chlorine variable valve 3 closer to the chlorine inlet mouth in hydrogen chloride synthetic furnace 8; Air delivery valve 6 is located on the escape pipe of hydrogen chloride synthetic furnace 8, and its one end is connected with the escape pipe of hydrogen chloride synthetic furnace 8, and the other end is connected with VCM synthesis device, for hydrogen chloride gas is delivered to VCM synthesis system as synthesis material; Making sour valve 7 is located on the escape pipe of hydrogen chloride synthetic furnace 8, and in parallel with air delivery valve 6, its one end is connected with the escape pipe of hydrogen chloride synthetic furnace 8, and the other end is connected with the resorber manufacturing hydrochloric acid, for hydrogen chloride gas is delivered to resorber, high purity hydrochloric acid after absorbing with water; Described Controlling System regulates meal 2, chlorine variable valve 3, hydrogen trip valve 4, chlorine trip valve 5, air delivery valve 6 and makees sour valve 7 be connected with pressure transmitter 1 and pressure transmitter 1, hydrogen respectively, for receiving the hydrogen-pressure force value in the hydrogen gas pipe of the hydrogen chloride synthetic furnace 8 that pressure transmitter 1 detects, and control the switch that interlocking value that each basis presets controls each valve.
The interlocking signal system preventing hydrogen chloride gas from crossing chlorine of the present embodiment can be provided on multiple stage hydrogen chloride synthetic furnace simultaneously, the Controlling System of each interlocking signal system is combined into one, namely a DCS Controlling System is adopted, the hydrogen pressure that the pressure transmitter that DCS Controlling System receives multiple hydrogen chloride synthetic furnace simultaneously detects, and control the switch of each valve of corresponding multiple hydrogen chloride synthetic furnaces simultaneously, achieve the same control of multiple hydrogen chloride synthetic furnace, greatly reduce labor force, optimize personnel depaly, improve production efficiency.
The interlocking signal system of the present embodiment is utilized to comprise the following steps to the method preventing hydrogen chloride gas and cross chlorine:
S1. the interlocking value of hydrogen pressure in the hydrogen gas pipe of a hydrogen chloride synthetic furnace 8 is preset in the controls, the standard value of hydrogen pressure in hydrogen gas pipe when described interlocking value normally works lower than hydrogen chloride synthetic furnace, when standard value as hydrogen pressure is 80kpa, the interlocking value of hydrogen pressure can be 60kpa;
S2. detected the hydrogen pressure of the hydrogen gas pipe of hydrogen chloride synthetic furnace 8 by pressure transmitter 1, and the data detected are transferred to Controlling System;
S3. the take-off equipment of hydrogen and chlorine is adjusted, described take-off equipment is the source of hydrogen and chlorine, it is connected with chlorine inlet pipe with hydrogen gas pipe, the hydrogen gas pipe of hydrogen chloride synthetic furnace 8 and the gaseous tension of chlorine inlet pipe is made to reach standard value by adjusting described take-off equipment, now, hydrogen regulating valve 2, hydrogen trip valve 4, chlorine variable valve 3, chlorine trip valve 5 and air delivery valve 6 are opened, make sour valve 7 to close, hydrogen chloride synthetic furnace 8 normally works, the hydrogen chloride gas of synthesis is sent to VCM synthesis device, synthesizing chloroethylene gas;
S4. when the hydrogen-pressure force value of the hydrogen gas pipe of the hydrogen chloride synthetic furnace 8 that pressure transmitter inspection 1 measures is lower than the interlocking value preset, hydrogen pressure is caused to reduce as hydrogen and chlorine pressure reduction change, or enter stove hydrogen and chlorine flowrate proportion adjustment is improper, Controlling System controls hydrogen regulating valve 2, hydrogen trip valve 4, chlorine variable valve 3, chlorine trip valve 5 and air delivery valve 6 are closed, make sour valve 7 to open, hydrogen chloride gas in hydrogen chloride synthetic furnace is sent to resorber, high purity hydrochloric acid after absorbing with water, now, the take-off equipment of adjustment hydrogen and chlorine, increase the hydrogen pressure in the hydrogen gas pipe of hydrogen chloride synthetic furnace,
S5. when the hydrogen-pressure force value of the hydrogen gas pipe of the hydrogen chloride synthetic furnace 8 that pressure transmitter 1 detects is higher than the interlocking value preset, Controlling System controls hydrogen regulating valve 2, hydrogen trip valve 4, chlorine variable valve 3, chlorine trip valve 5 and air delivery valve 6 and opens, make sour valve 7 to close, hydrogen chloride synthetic furnace continues normal work.
When adopting DCS Controlling System to control multiple hydrogen chloride synthetic furnace, each hydrogen chloride synthetic furnace carries out interlocking signal control all as stated above.
The interlocking signal system and method preventing hydrogen chloride gas from crossing chlorine of the present invention produces interlocking signal according to the change of hydrogen pressure in the hydrogen gas pipe of hydrogen chloride synthetic furnace, by Controlling System regulating and controlling valve, trip valve, air delivery valve and the switch making sour valve etc., prevent from producing unburnt chlorine in the building-up process of hydrogen chloride gas, control hydrogen chloride gas timely and cross chlorine, the serious accidents such as the burning that the acetylene reaction avoiding free chlorine excessive in hydrogenchloride and synthesizing chloroethylene causes and blast, hydrogen chloride synthetic furnace and following apparatus thereof are played a protective role, simultaneously, decrease labor force, achieve the object of optimization personnel, ensure that security of system, stable, continuous seepage.
Embodiments of the invention provide in order to example with for the purpose of describing, and are not exhaustively or limit the invention to disclosed form.Many modifications and variations are apparent for the ordinary skill in the art.Selecting and describing embodiment is in order to principle of the present invention and practical application are better described, and enables those of ordinary skill in the art understand the present invention thus design the various embodiments with various amendment being suitable for specific end use.
Claims (6)
1. the interlocking signal system preventing hydrogen chloride gas from crossing chlorine, it is characterized in that, comprise pressure transmitter, hydrogen control valve, chlorine control valve, air delivery valve, do sour valve and Controlling System, described pressure transmitter is located on the hydrogen gas pipe of hydrogen chloride synthetic furnace, in the hydrogen gas pipe that described hydrogen control valve and chlorine control valve are located at hydrogen chloride synthetic furnace respectively and chlorine inlet pipe, described air delivery valve and make sour valve and be all located on the escape pipe of hydrogen chloride synthetic furnace, described Controlling System is connected with pressure transmitter and each valve respectively.
2. the interlocking signal system preventing hydrogen chloride gas from crossing chlorine according to claim 1, it is characterized in that, one end of described air delivery valve is connected with the escape pipe of hydrogen chloride synthetic furnace, the other end is connected with VCM synthesis device, the escape pipe of described one end and hydrogen chloride synthetic furnace of making sour valve is connected, and the other end is connected with the resorber manufacturing hydrochloric acid.
3. the interlocking signal system preventing hydrogen chloride gas from crossing chlorine according to claim 1, it is characterized in that, described hydrogen control valve comprises hydrogen regulating valve and hydrogen trip valve, and described chlorine control valve comprises chlorine variable valve and chlorine trip valve.
4. the interlocking signal system preventing hydrogen chloride gas from crossing chlorine according to claim 3, it is characterized in that, described hydrogen trip valve is relative to the hydrogen inlet of hydrogen regulating valve near hydrogen chloride synthetic furnace, and described chlorine trip valve is relative to the chlorine inlet mouth of chlorine variable valve near hydrogen chloride synthetic furnace.
5. utilize the hydrogen chloride gas that prevents in claim 1-4 described in any one to cross the interlocking signal system of chlorine to the method preventing hydrogen chloride gas from crossing chlorine, it is characterized in that, comprise the following steps:
S1. the interlocking value of hydrogen pressure in the hydrogen gas pipe of a hydrogen chloride synthetic furnace is preset in the controls, the standard value of hydrogen pressure in hydrogen gas pipe when described interlocking value normally works lower than hydrogen chloride synthetic furnace;
S2. detected the hydrogen pressure of the hydrogen gas pipe of hydrogen chloride synthetic furnace by pressure transmitter, and the data detected are transferred to Controlling System;
S3. the take-off equipment of hydrogen and chlorine is adjusted, the hydrogen gas pipe of hydrogen chloride synthetic furnace and the gaseous tension of chlorine inlet pipe is made to reach standard value, now, hydrogen regulating valve, hydrogen trip valve, chlorine variable valve, chlorine trip valve and air delivery valve are opened, make sour valve to close, hydrogen chloride synthetic furnace normally works, and hydrogen chloride gas is sent to VCM synthesis device, synthesizing chloroethylene gas;
S4. when the hydrogen-pressure force value of the hydrogen gas pipe of the hydrogen chloride synthetic furnace that pressure transmitter detects is lower than the interlocking value preset, Controlling System controls hydrogen regulating valve, hydrogen trip valve, chlorine variable valve, chlorine trip valve and air delivery valve and closes, make sour valve to open, hydrogen chloride gas is sent to resorber, high purity hydrochloric acid after absorbing with water, now, the take-off equipment of adjustment hydrogen and chlorine, increases the hydrogen pressure in the hydrogen gas pipe of hydrogen chloride synthetic furnace;
S5. when the hydrogen-pressure force value of the hydrogen gas pipe of the hydrogen chloride synthetic furnace that pressure transmitter detects is higher than the interlocking value preset, Controlling System controls hydrogen regulating valve, hydrogen trip valve, chlorine variable valve, chlorine trip valve and air delivery valve and opens, make sour valve to close, hydrogen chloride synthetic furnace continues normal work.
6. the method preventing hydrogen chloride gas from crossing chlorine according to claim 5, it is characterized in that, described Controlling System is DCS Controlling System, it receives the data of the pressure transmitter of multiple hydrogen chloride synthetic furnace simultaneously, and controls hydrogen regulating valve, hydrogen trip valve, chlorine variable valve, chlorine trip valve, the air delivery valve of corresponding multiple hydrogen chloride synthetic furnaces simultaneously and make sour valve.
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105271121B (en) * | 2015-11-23 | 2017-11-03 | 金川集团股份有限公司 | A kind of synthetic furnace interlocking protective system |
| CN106444651B (en) * | 2016-08-16 | 2019-03-19 | 天能化工有限公司 | The DCS control method of relieving haperacidity process in hydrogen chloride production |
| CN106406255B (en) * | 2016-08-16 | 2019-03-15 | 天能化工有限公司 | The DCS control method for process of supplying gas in hydrogen chloride production |
| CN110252163B (en) * | 2019-07-03 | 2021-09-17 | 青海盐湖工业股份有限公司 | Mixer protection system and method for vinyl chloride production |
| CN110589769B (en) * | 2019-09-17 | 2021-04-23 | 德州实华化工有限公司 | Automatic chlorine-hydrogen ratio control method and system for hydrogen chloride synthesis furnace and synthesis furnace |
| CN112661113B (en) * | 2021-01-21 | 2023-09-26 | 新疆圣雄氯碱有限公司 | Control method of hydrogen chloride synthesis furnace |
| CN114893792B (en) * | 2022-05-24 | 2023-11-21 | 金宏气体股份有限公司 | Remote ignition system and method for hydrogen bromide synthesis furnace |
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| CN101676197A (en) * | 2008-09-19 | 2010-03-24 | 昊华宇航化工有限责任公司 | On-line detection method of free chlorine during synthesis process of hydrogen chloride |
| CN203392852U (en) * | 2013-08-07 | 2014-01-15 | 内蒙古君正化工有限责任公司 | Interlocking signal system for preventing hydrogen chloride gas from being subjected to superchlorination |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101676197A (en) * | 2008-09-19 | 2010-03-24 | 昊华宇航化工有限责任公司 | On-line detection method of free chlorine during synthesis process of hydrogen chloride |
| CN203392852U (en) * | 2013-08-07 | 2014-01-15 | 内蒙古君正化工有限责任公司 | Interlocking signal system for preventing hydrogen chloride gas from being subjected to superchlorination |
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