CN116754725A - Method for judging over-chlorine of acetylene and hydrogen chloride mixer and protection system - Google Patents
Method for judging over-chlorine of acetylene and hydrogen chloride mixer and protection system Download PDFInfo
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- CN116754725A CN116754725A CN202310784578.XA CN202310784578A CN116754725A CN 116754725 A CN116754725 A CN 116754725A CN 202310784578 A CN202310784578 A CN 202310784578A CN 116754725 A CN116754725 A CN 116754725A
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- hydrogen chloride
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- 239000000460 chlorine Substances 0.000 title claims abstract description 54
- 229910052801 chlorine Inorganic materials 0.000 title claims abstract description 54
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 title claims abstract description 37
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 229910000041 hydrogen chloride Inorganic materials 0.000 title claims abstract description 32
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 28
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 238000003786 synthesis reaction Methods 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- MAYPHUUCLRDEAZ-UHFFFAOYSA-N chlorine peroxide Inorganic materials ClOOCl MAYPHUUCLRDEAZ-UHFFFAOYSA-N 0.000 claims description 3
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 claims 6
- OTUXCLKRSRDYPV-UHFFFAOYSA-N acetylene hydrochloride Chemical compound Cl.C#C OTUXCLKRSRDYPV-UHFFFAOYSA-N 0.000 claims 2
- 238000002156 mixing Methods 0.000 abstract description 7
- 238000004458 analytical method Methods 0.000 abstract description 5
- 238000005070 sampling Methods 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 20
- 238000004519 manufacturing process Methods 0.000 description 10
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 230000018044 dehydration Effects 0.000 description 5
- 238000006297 dehydration reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 239000005997 Calcium carbide Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 125000001309 chloro group Chemical group Cl* 0.000 description 2
- 238000004590 computer program Methods 0.000 description 2
- 230000002194 synthesizing effect Effects 0.000 description 2
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- 206010020601 Hyperchlorhydria Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000013211 curve analysis Methods 0.000 description 1
- 238000006298 dechlorination reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/0052—Gaseous halogens
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The application discloses a method for judging the overchlorination of an acetylene and hydrogen chloride mixer and a protection system, wherein the method is characterized in that the change rate of the temperature points (the temperature of a mixer body, the temperature of an outlet pipeline of the mixer and the difference value between the temperature of circulating hot water and the temperature of an outlet pipeline of a preheater) which can most represent the overchlorination are collected, the change rate of the temperature points is counted, and a proper alarm threshold is determined by combining free chlorine sampling analysis; and for the currently acquired data, taking out two-out-of-three voting, and considering that the free chlorine in the system exceeds the standard once the change rate of two temperature points exceeds a set value. The method can timely and sensitively judge the chlorine exceeding of the mixing device and avoid parking caused by false alarm.
Description
Technical Field
The application relates to the technical field of chemical production control, in particular to a method for judging the overchlorination of an acetylene and hydrogen chloride mixer and a protection system.
Background
In the production process of polyvinyl chloride by a calcium carbide method, one of common safety accidents is that free chlorine in the chlorine hydride gas in a vinyl chloride working section reacts with acetylene gas severely, so that explosion combustion is caused, and part of equipment pipelines for mixed dehydration are damaged. This is mainly caused by that in the process of synthesizing hydrogen chloride, the ratio of chlorine gas and hydrogen gas is poorly controlled or the operation is unstable, so that the hydrogen chloride gas contains a small amount of free chlorine. The presence of free chlorine can present a significant hazard to safe production. The accidents are easy and frequent, and cause great threat to the safe production and stable operation of the device. In the strong market competition, in order to reduce the cost and consumption, general manufacturers only need to produce hydrogen chloride with higher purity, which increases the probability of producing free chlorine and contradicts the safe production.
To solve this problem, the countermeasure common in the industry has two main aspects.
Firstly, free chlorine is not contained in the hydrogen chloride gas sent by the hydrogen chloride synthesis working section, so that hidden danger is eliminated from the source.
Mainly comprises the following measures:
1. in the process of synthesizing hydrogen chloride, the stability of the pressure and purity of chlorine and hydrogen is emphasized, the fluctuation is reduced, and the stability of the purity of the hydrogen chloride is ensured by control means such as orifice plate flowmeter metering and automatic proportioning.
2. A small mixer is arranged on an outlet main pipe of the hydrogen chloride distribution table, and measures are found and taken early in the process of overchloriding, so that the large damage of the vinyl chloride mixer is avoided.
3. And (5) carrying out manual sampling analysis or detecting the content of free chlorine by using an online analyzer.
4. When the hydrogen chloride contains free chlorine, the free chlorine is adsorbed by the activated carbon to achieve the aim of dechlorination.
5. The responsibility of operators in the chlorine hydride synthesis working section is enhanced, the color of flame is observed through a sight glass, and a valve is regulated to ensure the purity of the chlorine hydride.
The measures can reduce the occurrence of the perchloride, but the perchloride is not found in time, the labor intensity is high, the equipment is more, and the problem of the perchloride of the hydrogen chloride is caused by the great influence of the accuracy and the reliability of the instrument equipment.
And secondly, adding a chlorine determination and safety linkage in the mixed dehydration device. When the mixer body or outlet temperature is above a safe upper limit, or the rate of temperature rise is exceeded. And triggering by a linkage signal, rapidly closing an acetylene cut-off self-control valve in front of the mixer, and simultaneously automatically opening a nitrogen charging valve of the mixing dehydration device to prevent free chlorine and acetylene gas from continuously accelerating reaction to cause explosion.
An example is shown in fig. 1, tias2105, 2104 for mixer body and outlet temperature, respectively. When the temperature rising rate is greater than the set value of 8 ℃/min or the temperature is greater than the safety upper limit of 55 ℃, the interlocking signal is triggered to close the acetylene regulating valve FV-2102 and the shut-off valve HZV-2104.
The method has the following defects:
1) The mixer body or outlet temperature point may be affected by various factors such as hydrogen chloride temperature, acetylene gas temperature, weather temperature, etc. Thus small changes in individual temperature points do not necessarily represent perchloric.
If the temperature rise rate and the safety limit are set too small, the vehicle may be stopped due to a chain malfunction, which affects production. If set too large, the hybrid dehydration engine may have exploded because of the perchloric reaction before the interlocking conditions are not triggered.
2) The setting of the upper safety limit of the temperature of the mixer is not provided with a fixed optimal value under the influence of the length of the hydrogen chloride and acetylene pipelines, the heat preservation condition and the temperature change of weather all around the world. Many manufacturers make a simple adjustment in winter and summer based on local air temperature. For example, the temperature is 40 ℃ in winter and 55 ℃ in summer, so that a good early warning effect is difficult to play.
Therefore, how to accurately judge hydrogen chloride overchlorides as soon as possible, and further avoid the deterioration or expansion of the situation by effective early warning measures before the accident occurs is always a difficult point in the production of vinyl chloride by the calcium carbide method.
Disclosure of Invention
The application provides a method and a system for judging the over-chlorine of an acetylene and hydrogen chloride mixer, which are used for solving the problems of insufficient timely and reliable over-chlorine judgment in the prior art.
In order to achieve the above object, the application provides a method for determining the overchlorination of an acetylene and hydrogen chloride mixer, comprising the following steps:
acquiring current first temperature data, second temperature data and third temperature data; the first temperature data, the second temperature data and the third temperature data are temperature data acquired at different pipeline positions capable of reflecting the chlorine state;
calculating the respective change rates of the current first temperature data, the current second temperature data and the current third temperature data, and comparing the change rates with preset corresponding thresholds;
and based on the three-out-of-two voting rule, if at least two of the three change rates exceed the threshold value, judging that the free chlorine in the system exceeds the standard.
Preferably, the first temperature data is the temperature of the mixer body.
Preferably, the second temperature data is a mixer outlet pipe temperature.
Preferably, the third temperature data is the difference between the circulating hot water temperature and the preheater outlet duct temperature.
Alternatively, the statistical unit time of the rate of change of the first temperature data is 10 seconds.
Alternatively, the statistical unit time of the rate of change of the second temperature data is 10 seconds.
Alternatively, the statistical unit time of the rate of change of the third temperature data is 60 seconds.
The application also provides a perchloric protection system of the acetylene and hydrogen chloride mixer, which comprises:
a sensor for measuring the temperature of the mixer body;
a sensor for measuring the temperature of the mixer outlet conduit;
a sensor for measuring the temperature of the circulating hot water of the preheater;
a sensor for measuring the temperature of the preheater outlet duct;
and the controller is used for realizing the over-chlorine judging method and generating an interlocking control signal when the free chlorine in the judging system exceeds the standard so as to enable the related executing mechanism to respond.
Optionally, the associated actuator is responsive, including: and closing the acetylene pipeline shut-off valve and the regulating valve, and opening the mixer and the outlet pipeline nitrogen charging valve.
Optionally, when the free chlorine in the judging system exceeds the standard, a chlorine passing alarm signal is also sent to the chlorine-hydrogen synthesis working section.
Compared with the prior art, the application has at least the following beneficial effects:
the application counts the change rate of the three temperature points (the temperature of the mixer body, the temperature of the outlet pipeline of the mixer and the difference value between the temperature of the circulating hot water and the temperature of the outlet pipeline of the preheater) which can most represent the chlorine, and combines the sampling analysis of free chlorine to determine a proper alarm threshold; for the currently collected data, the three-out-of-two voting is utilized, and once the change rate of two temperature points exceeds a set value, the free chlorine in the system is considered to exceed the standard, so that the mixing device can be timely and sensitively judged to be overchlorinated, and the parking caused by false alarm is avoided.
Drawings
In order to more intuitively illustrate the prior art and the application, exemplary drawings are presented below. It should be understood that the specific shape and configuration shown in the drawings are not generally considered limiting conditions in carrying out the application; for example, those skilled in the art will be able to make routine adjustments or further optimizations for the addition/subtraction/attribution division, specific shapes, positional relationships, connection modes, dimensional proportion relationships, and the like of certain units (components) based on the technical concepts and the exemplary drawings disclosed in the present application.
FIG. 1 is a schematic diagram of the prior art principle of the chlorine determination and safety linkage;
FIG. 2 is a process flow diagram with control points according to one embodiment of the present application;
fig. 3 is a logic diagram of an embodiment of the present application for a hyperchlorhydria alarm.
Detailed Description
The application will be further described in detail by means of specific embodiments with reference to the accompanying drawings.
In the description of the present application: unless otherwise indicated, the terms "first," "second," "third," and the like herein are intended to distinguish between objects that are referenced without a special meaning in terms of technical connotation (e.g., should not be construed as emphasis on importance or order, etc.). The expressions "comprising", "including", "having", etc. also mean "not limited to" (certain units, components, materials, steps, etc.).
In one embodiment, in order to judge the overchlorine of the mixing device as timely and sensitively as possible and avoid stopping caused by false alarm, a method for setting a linkage value based on the statistics of the change rate of key temperature points and judging the overchlorine by utilizing a three-out-two voting rule is provided; the method comprises the steps of selecting three temperature points (control points) which can most represent hydrogen chloride per-chlorine of a mixing device, counting the change rate of the three temperature points, and finding out a proper alarm value by combining free chlorine sampling analysis; and judging the change rate of the key temperature points by using a three-out-of-two voting, and considering that the free chlorine in the system exceeds the standard once the change rate of the two temperature points exceeds a set value, and sending a chlorine signal by the DCS. When the perchloric signal is true, the DCS system can output an opening or closing command to the interlocking self-control valve of the hybrid dehydration device according to the interlocking logic, so that the safety of the system is ensured. Specifically:
in the first step, the temperature point is selected as shown in fig. 2:
the mixer is a container in which the vinyl chloride gas and the acetylene gas are initially brought into contact and mixed, and is also a place where free chlorine in the vinyl chloride and acetylene gas molecules react and emit heat. Therefore, the change in temperature T1 of the mixer body most directly reflects the change in the chlorine.
The residence time of the vinyl chloride gas and the acetylene gas in the mixer is very short, and only about two seconds. The heat of the small amount of the perchloric reaction is always continuously brought to the outlet pipeline, and the temperature of the body is inhibited by the temperature of the new gas. Therefore, the mixer outlet pipe temperature T2 is also one of the critical temperature points.
In the case of an extremely small amount of the chlorine, when the temperature of the mixer is low, the chlorine reaction does not occur immediately, but the chlorine reaction is fully performed after the activity increases in the hot-air mixing preheater part. Therefore, the temperature of the mixed gas at the outlet of the preheater is also one of key temperature points, and because the temperature value of the gas of the preheater is greatly influenced by the temperature of circulating hot water, the deviation of the gas of the preheater and the circulating hot water is basically stable under normal production, and fluctuation can occur during the process of overchloriding. The inventors have chosen in particular the difference between the temperature of the circulating hot water and the temperature of the outlet duct of the preheater: t3.
Finally, three values of T1, T2 and T3 shown in FIG. 2 are selected, namely the temperature of the gas in the mixer, the temperature of the gas in the outlet pipeline of the mixer, and the difference between the temperature of the hot water of the preheater and the temperature of the gas at the outlet of the preheater.
Secondly, counting the change rate and setting an alarm point:
and respectively counting the changes of three temperature points T1, T2 and T3 in a period of time (T1, T2 and T3 seconds respectively) in a DCS system to obtain three groups of data which are needed to be counted. The normal fluctuation range of these three values can be derived by data curve statistics in normal production. And then selecting proper change rates delta T1, delta T2 and delta T3 as the over-chlorine alarm points.
Setting of judgment time t: temperature change within ten seconds to one minute is commonly adopted in the industry as a determination signal of the mixing device chlorine. Too long time causes large hysteresis, and cannot play a role in early warning. Too short a time and too small a temperature deviation, false alarms may occur. To judge the chlorine peroxide as sensitively as possible, t1, t2 are temporarily selected for 10 seconds as time t. The preheater is easily influenced by the factors of hot water temperature, heat exchange effect and the like, and the explosion cannot be caused by a very small amount of overchlorine, and t3 can be preset to be 60 seconds.
Setting of Δt1, Δt2, Δt3: the three rates of change were taken temporarily at 0.5, 0.35, 2, taking into account industry experience (one minute rise 3 to 8 ℃) and sensitivity considerations. According to the change rate curve analysis, the fluctuation range of the three data in normal production can be obtained, and the three values can be continuously modulated by combining the free chlorine sampling analysis to find the optimal alarm point. Under the condition of not influencing normal production, three set values can be gradually reduced, and a better early warning effect is achieved.
When the temperature change rate set value is accurate enough, the three temperature changes can all timely represent the chlorine state. However, a single temperature change is susceptible to abnormal conditions, and simply treating the temperature change as a perchloric signal can cause a false stop. If the mixer body is easily influenced by temperature and pressure fluctuation of inlet hydrogen chloride and acetylene gas, the preheater can be influenced by temperature change of hot water and heat exchange effect, or thermal resistor or DCS clamping piece faults or loose wiring and the like. However, these cases are not common, and only two or more temperature points are required to be increased simultaneously as early warning.
Meanwhile, because of the difference in free chlorine content, subtle differences occur in the exothermic location of the reaction. When the free chlorine content is large, the temperature of the gas in the mixer and the outlet pipeline can be rapidly reflected. Very small amounts of perchloric may be present in the preheater section first.
By combining the above considerations, three temperature change rates are judged by using three-out-of-two voting, and once the change rates of two temperature points exceed a set value, the free chlorine in the system is considered to exceed the standard, and the DCS system sends a chlorine passing signal.
The interlocking logic of the super chlorine signal is shown in figure 3, when the super chlorine alarm signal is generated, the interlocking of the DCS or the safety instrument system triggers to automatically close the acetylene pipeline cut-off valve and the regulating valve, and the mixer and the outlet pipeline nitrogen filling valve are opened; meanwhile, a chlorine peroxide warning signal is sent to the chlorine hydride synthesis working section to remind operators of the chlorine hydride synthesis working section to stop or stop sending the hydrogen chloride to reform acid.
The above control logic may be realized by software or a combination of software and hardware, in addition to hardware circuits. For example, the controller includes a memory storing a computer program and a processor implementing the above-described chlorine determination method or the like when executing the computer program.
Any combination of the technical features of the above embodiments may be performed (as long as there is no contradiction between the combination of the technical features), and for brevity of description, all of the possible combinations of the technical features of the above embodiments are not described; these examples, which are not explicitly written, should also be considered as being within the scope of the present description.
Claims (10)
1. The method for judging the overchlorination of the acetylene and hydrogen chloride mixer is characterized by comprising the following steps of:
acquiring current first temperature data, second temperature data and third temperature data; the first temperature data, the second temperature data and the third temperature data are temperature data acquired at different pipeline positions capable of reflecting the chlorine state;
calculating the respective change rates of the current first temperature data, the current second temperature data and the current third temperature data, and comparing the change rates with preset corresponding thresholds;
and based on the three-out-of-two voting rule, if at least two of the three change rates exceed the threshold value, judging that the free chlorine in the system exceeds the standard.
2. The method for determining the perchlorination of an acetylene and hydrogen chloride mixer according to claim 1, wherein the first temperature data is the temperature of the mixer body.
3. The method for determining the perchlorination of an acetylene and hydrogen chloride mixer according to claim 1, wherein the second temperature data is a mixer outlet pipe temperature.
4. The method for determining the overchlorination of an acetylene-hydrogen chloride mixer according to claim 1, wherein the third temperature data is a difference between the temperature of the circulated hot water and the temperature of the outlet pipeline of the preheater.
5. The method for determining the overchlorination of an acetylene-hydrogen chloride mixer according to claim 2, wherein the statistical unit time of the rate of change of the first temperature data is 10 seconds.
6. The method for determining the chlorine peroxide in an acetylene and hydrogen chloride mixer according to claim 3, wherein the statistical unit time of the rate of change of the second temperature data is 10 seconds.
7. The method for determining the perchloric acid in an acetylene and hydrogen chloride mixer according to claim 4, wherein the statistical unit time of the rate of change of the third temperature data is 60 seconds.
8. A system for protecting the perchloric acid of an acetylene and hydrogen chloride mixer, comprising:
a sensor for measuring the temperature of the mixer body;
a sensor for measuring the temperature of the mixer outlet conduit;
a sensor for measuring the temperature of the circulating hot water of the preheater;
a sensor for measuring the temperature of the preheater outlet duct;
and the controller is used for realizing the method for judging the overchlorine of the acetylene and hydrogen chloride mixer according to claim 1, and generating an interlocking control signal to enable the relevant executing mechanism to respond when the free chlorine in the judging system exceeds the standard.
9. The system for the protection of the perchloric acid of an acetylene and hydrogen chloride mixer of claim 8, wherein the associated actuator is responsive and comprises: and closing the acetylene pipeline shut-off valve and the regulating valve, and opening the mixer and the outlet pipeline nitrogen charging valve.
10. The system for protecting the chlorine of the acetylene and hydrogen chloride mixer according to claim 8, wherein when the free chlorine in the system is judged to exceed the standard, a chlorine warning signal is also sent to the chlorine-hydrogen synthesis section.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310784578.XA CN116754725A (en) | 2023-06-29 | 2023-06-29 | Method for judging over-chlorine of acetylene and hydrogen chloride mixer and protection system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310784578.XA CN116754725A (en) | 2023-06-29 | 2023-06-29 | Method for judging over-chlorine of acetylene and hydrogen chloride mixer and protection system |
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| CN116754725A true CN116754725A (en) | 2023-09-15 |
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| CN202310784578.XA Pending CN116754725A (en) | 2023-06-29 | 2023-06-29 | Method for judging over-chlorine of acetylene and hydrogen chloride mixer and protection system |
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