Oxygen cracking method treatment system for 1, 1-dichloroethylene organic waste gas

Abstract

The utility model relates to the technical field of waste gas treatment, in particular to an oxygen cracking method treatment system for 1, 1-dichloroethylene organic waste gas. The waste gas pipeline and the air pipeline are connected with the oxygen cracking device, and the oxygen cracking device internally comprises a preheating heat exchanger, an electric heater and a reaction bed which are sequentially connected; the reaction bed is connected with a first-stage washing tower through a preheating heat exchanger, the bottom of the first-stage washing tower is connected with an alkali liquor tank, the top of the alkali liquor tank is provided with a second-stage washing tower, a water pipeline is respectively connected with the first-stage washing tower and the second-stage washing tower, the alkali liquor tank is connected with an alkali liquor cooler through an alkali liquor pump, and an outlet of the alkali liquor cooler is divided into three pipelines; a primary washing tower, a secondary washing tower and a neutralization kettle are respectively connected, the neutralization kettle is connected with an evaporative crystallization device through a filtering device, and the evaporative crystallization device is connected with a recycled water storage tank through an evaporated water cooler; the waste alkali liquor with excessive salt content is transported to a neutralization kettle for neutralization, filtration, evaporative crystallization and salt and water recovery, so that the industrial value of the system is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to waste gas treatment technical field, concretely relates to 1, 1 -dichloroethylene organic waste gas's temporary oxygen cleavage method processing system. BACKGROUND

[0002] With the rapid development of chemical industry, pharmaceutical, electronic and other industries, the emission of organic waste gas is increasingly serious, especially the waste gas containing chlorinated organic compounds (such as 1, 1 -dichloroethylene, vinyl chloride, trichloroethylene, etc.), because of its high toxicity, difficult degradation, has caused serious threat to the environment and human health. The traditional organic waste gas treatment method mainly includes adsorption method, combustion method, catalytic oxidation method etc., but these methods have certain limitations in the treatment of chlorinated organic waste gas. Although the adsorption method can effectively remove the organic matter in waste gas, the adsorbent is easy to saturate, and needs to be replaced or regenerated frequently, and the adsorption effect of chlorinated organic matter is limited, and secondary pollution is easy to produce;The combustion method can oxidize organic matter into carbon dioxide and water completely, but when treating chlorinated organic matter, hydrogen chloride and other acidic gases will be produced, which need to be treated by additional alkali washing device, and the high-temperature combustion energy consumption is high, and the operation cost is large;Catalytic oxidation method can realize the oxidation and decomposition of organic matter at lower temperature, but the catalyst is easy to be deactivated due to chlorine poisoning, and the treatment efficiency of chlorinated organic matter is limited.

[0003] In view of the above problems, in recent years, temporary oxygen cleavage method gradually becomes the research hotspot of treating chlorinated organic waste gas. Temporary oxygen cleavage method can crack and oxidize organic matter into harmless carbon dioxide, water and nitrogen at lower temperature by using catalyst, which has the advantages of low energy consumption and high treatment efficiency. However, the existing temporary oxygen cleavage technology still has the problems of low heat energy utilization rate, imperfect wastewater treatment and poor temperature and pressure control in the reaction process, low safety and low automation degree. The high-temperature gas generated in the reaction process cannot be fully recycled, resulting in high system energy consumption;The salt-containing wastewater generated in the alkali washing process cannot be effectively recycled, and there is a risk of secondary pollution;The existing system relies on manual operation, and it is difficult to realize accurate control, which affects the treatment efficiency and safety. UTILITY MODEL CONTENTS

[0004] The utility model discloses a temporary oxygen cleavage method processing system for 1, 1 -dichloroethylene organic waste gas to solve the problems of low heat energy utilization rate, imperfect wastewater treatment and poor temperature and pressure control in the reaction process, low safety and low automation degree.

[0005] In order to solve the above problems, the technical scheme of the utility model is:

[0006] The utility model discloses 1, 1 -dichloroethylene organic waste gas's temporary oxygenolysis processing system, including waste gas pipeline and air pipeline, waste gas pipeline and air pipeline are connected temporary oxygenolysis device through the air -blower, including the preheating heat exchanger, electric heater, reaction bed that pass through the pipeline connection in proper order in temporary oxygenolysis device, and reaction bed is connected with preheating heat exchanger through heat exchange inlet pipe, and preheating heat exchanger is connected with primary scrubber through heat exchange outlet pipe, and the bottom of primary scrubber is connected with lye tank, and the top of lye tank is equipped with secondary scrubber, and the top of secondary scrubber is connected with activated carbon adsorption device through pipeline, and water pipeline is connected with primary scrubber and secondary scrubber respectively, and lye pipeline is connected with lye tank, and lye tank is connected with lye cooler through parallel first lye pump and second lye pump, and the export of lye cooler is divided into three pipeline, and one way is first lye delivery pipe and is connected with primary scrubber, and one way is second lye delivery pipe and is connected with secondary scrubber, and one way is waste lye processing transport pipeline and is connected with neutralization kettle, and hydrochloric acid pipeline is equipped on neutralization kettle, and neutralization kettle is connected with evaporation crystallization device through filter device, and evaporation crystallization device is connected with recycled water storage tank through evaporation water cooler, and recycled water storage tank is connected with water pipeline through recycled water transport pipeline;Waste gas regulating valve and air regulating valve are equipped on waste gas pipeline and air pipeline respectively;Third temperature sensor is equipped in reaction bed;Emergency relief pipeline is equipped on waste gas pipeline;Emergency relief valve is equipped on emergency relief pipeline.

[0007] The first lye pump or the second lye pump is a standby pump, so that when one of the lye pumps fails, the production can be continued by switching to the other lye pump.

[0008] Further, the first lye pump and the second lye pump are provided with sampling ports on the outlet pipelines.

[0009] The quality of the circulating lye is detected at the sampling ports, and if the salt content is too high, the treatment effect on the waste gas will be affected, so the waste lye needs to be transported to the neutralization kettle for neutralization, filtration, evaporation crystallization, salt and water recovery, and the industrial value of the system is improved.

[0010] Further, the evaporation crystallization device is connected with a sodium chloride product storage tank.

[0011] Further, the output end of the third temperature sensor is electrically connected with the control ends of the waste gas regulating valve, the air regulating valve and the emergency relief valve.

[0012] A plurality of temperature monitoring points (third temperature sensors) are arranged at different positions in the reaction bed to monitor the reaction temperature and to be connected with the waste gas regulating valve for interlocking control, so that in the case of extreme conditions such as system over-temperature, the waste gas regulating valve and the electric heater are cut off, and the air regulating valve is fully opened for system cooling.

[0013] In addition, an inlet and outlet temperature sensor and an inlet and outlet pressure sensor of the reaction bed are arranged to detect the temperature rise and resistance change of the reaction bed.

[0014] Further, the first temperature sensor and the second temperature sensor are respectively arranged on the pipeline before the inlet of the electric heater and after the outlet of the electric heater.

[0015] Further, the first temperature sensor and the second temperature sensor are respectively arranged on the pipeline before the inlet of the electric heater and after the outlet of the electric heater.

[0016] When the system is started and preheated, the temperature of the first temperature sensor controller is set, the outlet temperature of the electric heater is automatically adjusted by the intelligent instrument in the electric cabinet, and in order to protect the electric heater and the system, the second temperature sensor controller for the center temperature of the electric heater is set to overheat interlocking to cut off the power supply of the electric heater.

[0017] Working principle:

[0018] The exhaust gas enters the system through the exhaust gas pipeline, mainly containing organic components such as vinyl chloride, ammonia, dichloroethane, 1,1-dichloroethylene, trichloroethylene, and trichloroethane. After the flow is adjusted by the exhaust gas regulating valve, the exhaust gas is mixed with the air (adjusted by the air regulating valve) entering through the air pipeline to form a mixed gas suitable for the oxy- cracking reaction.

[0019] When the exhaust gas pressure is abnormal or the third temperature sensor inside the reaction bed detects overheat, the emergency relief valve is opened to safely release the exhaust gas through the emergency relief pipeline to prevent system overload.

[0020] The mixed gas is pressurized by the air blower and sent to the oxy-cracking device. The outlet of the air blower is equipped with a thermometer, a pressure gauge, a flow meter, and a PID detector to monitor the pressure, temperature, flow, and concentration of the mixed gas in real time. The mixed gas first enters the preheating heat exchanger and exchanges heat with the high-temperature gas from the reaction bed. The preheating heat exchanger realizes heat recovery through the heat exchange inlet and outlet pipes, improving energy utilization efficiency. The temperature of the preheated gas is monitored by the first temperature sensor and the second temperature sensor to ensure that the gas reaches the required temperature for the reaction. The preheated gas enters the electric heater, which supplements part of the heat to ensure that the gas temperature meets the requirements of the oxy-cracking reaction. The outlet temperature of the electric heater is set by the first temperature sensor controller and automatically adjusted by the intelligent instrument in the electric cabinet. The second temperature sensor controller is arranged inside the electric heater to monitor the center temperature of the electric heater, and automatically cut off the power supply when the temperature is too high to protect the equipment.

[0021] Several temperature monitoring points, i.e., third temperature sensors, are arranged at different positions in the reaction bed to monitor the reaction temperature and control the exhaust gas regulating valve in a chain control manner. In extreme cases such as system overheat, the exhaust gas regulating valve and the electric heater are cut off, and the air regulating valve is fully opened for system cooling.

[0022] Reaction bed inlet and outlet temperature sensors and inlet and outlet pressure sensors are arranged to detect the temperature rise and resistance change of the reaction bed.

[0023] The organic matters in the exhaust gas are cracked and oxidized under the action of oxygen and catalyst to generate harmless substances such as carbon dioxide, water and nitrogen.

[0024] The high-temperature gas from the reaction bed enters the primary washing tower through the heat exchange outlet pipe and contacts with the lye to remove the acidic components in the gas. The gas and the lye in the primary washing tower generate a neutralization reaction to generate salt and water. The lye is delivered to the primary washing tower and the secondary washing tower through the first lye pump or the second lye pump. To further remove the acidic gas, the gas enters the secondary washing tower for deep purification. The lye enters the secondary washing tower through the second lye delivery pipe to ensure that the acidic components in the gas are completely removed.

[0025] The lye flowing out of the primary washing tower and the secondary washing tower is cooled by the lye cooler and then delivered to the washing tower for recycling.

[0026] The quality of the circulating lye is detected at the sampling port. If the salt content in the lye is too high, the treatment effect of the lye on the exhaust gas will be affected. In this case, the waste lye enters the neutralization kettle through the waste lye treatment pipeline and reacts with hydrochloric acid in the hydrochloric acid pipeline to adjust the pH value to neutral. The waste liquid after neutralization removes the suspended solids through the filtering device and then enters the evaporation crystallization device. Through evaporation crystallization, NaCl in the waste water is crystallized and separated out and enters the sodium chloride product storage tank for recycling. The water vapor generated in the evaporation process is condensed by the evaporation water cooler and then enters the recovered water storage tank and is reused for cooling or lye preparation in the system through the recovered water transportation pipeline, realizing the recycling of water resources.

[0027] The gas after the alkali washing enters the activated carbon adsorption device to further remove trace organic matters in the gas and ensure that the tail gas meets the standard.

[0028] The beneficial effects of the utility model are as follows:

[0029] (1) The utility model detects the quality of the circulating lye at the sampling port. If the salt content in the lye is too high, the treatment effect of the lye on the exhaust gas will be affected. Therefore, the waste lye needs to be transported to the neutralization kettle for neutralization, filtration, evaporation crystallization, salt and water recovery and industrial value improvement of the system.

[0030] (2) The utility model is provided with a plurality of temperature monitoring points (third temperature sensors) at different positions in the reaction bed to monitor the reaction temperature and perform interlocking control with the exhaust gas regulating valve. In the case of extreme conditions such as system over-temperature, the exhaust gas regulating valve and the electric heater are cut off, and the air regulating valve is fully opened to cool the system. The safety of the system is greatly improved.

[0031] (3)The system preheats, set the first temperature sensor controller temperature, by the electric heater outlet temperature automatic adjustment intelligent instrument in the electric cabinet, in order to protect the electric heater, the system set the electric heater center temperature second temperature sensor controller over temperature interlock, cut off the electric heater power supply. BRIEF DESCRIPTION OF DRAWINGS

[0032] The accompanying drawings, which are included to provide a further understanding of the present application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and together with the description serve to explain the principles of the present application. In the drawings:

[0033] Figure 1 The structure diagram of the 1,1-dichloroethylene organic waste gas oxygenolysis treatment system of the present application;

[0034] In the figure: 1, waste gas pipeline; 101, waste gas regulating valve; 2, air pipeline; 201, air regulating valve; 3, emergency relief pipeline; 301, emergency relief valve; 4, air blower; 5, preheating heat exchanger; 6, electric heater; 601, first temperature sensor; 602, second temperature sensor; 603, first temperature sensor controller; 604, second temperature sensor controller; 7, reaction bed; 701, third temperature sensor; 8, heat exchange inlet pipe; 9, heat exchange outlet pipe; 10, primary scrubbing tower; 11, secondary scrubbing tower; 12, lye tank; 13, water pipeline; 14, lye pipeline; 15, first lye pump; 16, second lye pump; 17, lye cooler; 18, activated carbon adsorption device; 19, first lye delivery pipe; 20, second lye delivery pipe; 21, waste lye treatment and transportation pipeline; 22, filtration device; 23, evaporation crystallization device; 24, evaporation water cooler; 25, recovered water storage tank; 26, recovered water transportation pipeline; 27, neutralization kettle; 28, hydrochloric acid pipeline; 29, sodium chloride finished product storage tank; 30, sampling port. DETAILED DESCRIPTION

[0035] The present application can be understood in conjunction with the following examples.

[0036] Example 1

[0037] As Figure 1As shown, the 1,1-dichloroethylene organic waste gas oxygen cracking treatment system, including waste gas pipeline 1 and air pipeline 2, the waste gas pipeline 1 and air pipeline 2 through the air blower 4 connection oxygen cracking device, the oxygen cracking device includes preheating heat exchanger 5, electric heater 6, reaction bed 7 connected by pipeline in turn; reaction bed 7 through heat exchange inlet pipe 8 and preheating heat exchanger 5 are connected, preheating heat exchanger 5 through heat exchange outlet pipe 9 and connect first washing tower 10, the bottom of first washing tower 10 is connected with lye tank 12, the top of lye tank 12 is provided with secondary washing tower 11, the top of secondary washing tower 11 is connected with activated carbon adsorption device 18 through pipeline, water pipeline 13 is connected with first washing tower 10 and secondary washing tower 11 respectively, lye pipeline 14 is connected with lye tank 12, lye tank 12 is connected with lye cooler 17 through parallel first lye pump 15 and second lye pump 16, the outlet of lye cooler 17 is divided into three pipeline, one is first lye delivery pipe 19 connected with first washing tower 10, one is second lye delivery pipe 20 connected with secondary washing tower 11, one is waste lye treatment transport pipeline 21 connected with neutralization kettle 27, hydrochloric acid pipeline 28 is arranged on neutralization kettle 27, neutralization kettle 27 is connected with evaporation crystallization device 23 through filter device 22, evaporation crystallization device 23 is connected with recycled water storage tank 25 through evaporation water cooler 24, recycled water storage tank 25 is connected with water pipeline 13 through recycled water transport pipeline 26; the waste gas pipeline 1 and air pipeline 2 are respectively provided with waste gas regulating valve 101 and air regulating valve 201; the inside of reaction bed 7 is provided with third temperature sensor 701; the waste gas pipeline 1 is provided with emergency relief pipeline 3; the emergency relief pipeline 3 is provided with emergency relief valve 301.

[0038] The first lye pump 15 or the second lye pump 16 is a standby pump, when one of the lye pumps fails, the production can be continued without interruption by switching to the other lye pump.

[0039] Further, the first lye pump 15 and the second lye pump 16 are provided with a sampling port 30 on the outlet pipeline.

[0040] The quality of the circulating lye is detected at the sampling port 30, if the salt content is too high, it will affect the treatment effect of the waste gas, and the waste lye needs to be transported to the neutralization kettle 27 for neutralization, filtration, evaporation crystallization, salt and water recovery, and the industrial value of the system is improved.

[0041] Further, the evaporation crystallization device 23 is connected with a sodium chloride finished product storage tank 29.

[0042] Further, the output end of the third temperature sensor 701 is electrically connected with the control end of the waste gas regulating valve 101, the air regulating valve 201 and the emergency relief valve 301.

[0043] Several temperature monitoring points (third temperature sensor 701) are arranged at different positions in the reaction bed 7 to monitor the reaction temperature and perform interlock control with the exhaust gas regulating valve 101. In the case of extreme conditions such as system over-temperature, the exhaust gas regulating valve 101 and the electric heater 6 are cut off, and the air regulating valve 201 is fully opened to cool down the system.

[0044] In addition, the reaction bed 7 inlet and outlet temperature sensors and the inlet and outlet pressure sensors are arranged to detect the temperature rise and resistance change of the reaction bed 7.

[0045] Further, the first temperature sensor 601 and the second temperature sensor 602 are arranged on the pipeline before the inlet of the electric heater 6 and after the outlet of the electric heater 6, respectively.

[0046] Further, the first temperature sensor 601 and the second temperature sensor 602 are arranged on the pipeline before the inlet of the electric heater 6 and after the outlet of the electric heater 6, respectively.

[0047] During system startup and preheating, the temperature of the first temperature sensor 603 is set, and the outlet temperature of the electric heater 6 is automatically adjusted by the intelligent instrument in the electric cabinet. In order to protect the electric heater 6 and the system, the second temperature sensor 604 is set to over-temperature interlock to cut off the power supply of the electric heater 6.

[0048] Working principle:

[0049] The exhaust gas enters the system through the exhaust gas pipeline 1, and the exhaust gas mainly contains organic components such as chloroethylene, ammonia, dichloroethane, 1,1-dichloroethylene, trichloroethylene, and trichloroethane. After the flow of the exhaust gas is adjusted by the exhaust gas regulating valve 101, the exhaust gas is mixed with the air entering through the air pipeline 2 and adjusted by the air regulating valve 201 to form a mixed gas suitable for the oxygen cracking reaction.

[0050] When the exhaust gas pressure is abnormal or the third temperature sensor in the reaction bed detects over-temperature, the emergency relief valve 301 is opened to safely release the exhaust gas through the emergency relief pipeline 3, preventing system overload.

[0051] The mixed gas is pressurized by the air blower 4 and then sent to the oxygen cracking device. The outlet of the air blower is provided with a thermometer, a pressure gauge, a flow meter and a PID detector to monitor the pressure, temperature, flow and concentration of the mixed gas in real time. The mixed gas first enters the preheating heat exchanger 5 and exchanges heat with the high-temperature gas from the reaction bed 7. The preheating heat exchanger 5 realizes heat recovery through the heat exchange inlet pipe 8 and the heat exchange outlet pipe 9, thereby improving the energy utilization efficiency. The temperature of the preheated gas is monitored by the first temperature sensor 601 and the second temperature sensor 602 to ensure that the gas reaches the required temperature for the reaction. The preheated gas enters the electric heater 6, which supplements part of the heat to ensure that the temperature of the gas reaches the requirements of the oxygen cracking reaction. The outlet temperature of the electric heater is set by the first temperature sensing controller 603 and automatically adjusted by the intelligent instrument in the electric cabinet. The second temperature sensing controller 604 is arranged inside the electric heater to monitor the center temperature of the electric heater and automatically cut off the power supply when the temperature is too high to protect the equipment.

[0052] A plurality of temperature monitoring points are arranged at different positions in the reaction bed 7, i.e. the third temperature sensor 701 is arranged to monitor the reaction temperature and is connected to the waste gas regulating valve 101 for interlocking control. In the case of extreme conditions such as system over-temperature, the waste gas regulating valve 101 and the electric heater 6 are cut off and the air regulating valve 201 is fully opened for system cooling.

[0053] The reaction bed 7 is also provided with inlet and outlet temperature sensors and inlet and outlet pressure sensors to detect the temperature rise and resistance change of the reaction bed.

[0054] The organic matter in the waste gas is cracked and oxidized under the action of oxygen and catalyst to generate harmless substances such as carbon dioxide, water and nitrogen.

[0055] The high-temperature gas from the reaction bed 7 enters the primary scrubbing tower 10 through the heat exchange outlet pipe 9 and contacts with the lye to remove the acidic components in the gas. The gas reacts with the lye in the primary scrubbing tower 10 to generate salt and water. The lye is delivered from the lye tank 12 to the primary scrubbing tower 10 and the secondary scrubbing tower 11 by the first lye pump 15 or the second lye pump 16. To further remove the acidic gas, the gas enters the secondary scrubbing tower 11 for deep purification. The lye enters the secondary scrubbing tower 11 through the second lye delivery pipe 20 to ensure that the acidic components in the gas are completely removed.

[0056] The lye flowing out of the primary scrubbing tower 10 and the secondary scrubbing tower 11 is cooled by the lye cooler 17 and then delivered to the scrubbing tower for recycling.

[0057] The circulating lye is detected in quality at the sampling port 30, if the salt content therein is too much, the treatment effect on the waste gas will be affected, at this time, the waste lye is transported into the neutralization kettle 27 through the waste lye treatment pipeline 21, and reacts with hydrochloric acid in the hydrochloric acid pipeline 28 to adjust the pH value to neutral. The waste liquid after neutralization is removed of suspended solids through the filtering device 22, and then enters the evaporation crystallization device 23. Through evaporation crystallization, NaCl in the waste water is crystallized and separated out, and enters the sodium chloride product storage tank 29 for recycling. The water vapor generated in the evaporation process is condensed through the evaporation water cooler 24, and then enters the recycled water storage tank 25, and is used for cooling or lye preparation inside the system through the recycled water transportation pipeline 26, so that the water resource is recycled.

[0058] The gas after the alkali washing enters the activated carbon adsorption device 18, and further removes trace organic matter in the gas, so that the tail gas meets the standard.

[0059] Each of the embodiments in the specification is described in a progressive manner, and the same and similar parts between the embodiments can be referred to each other, and each embodiment mainly describes the difference from other embodiments. Especially, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the related parts can be referred to the part of the method embodiment.

[0060] The above only describes the embodiments of the present application and is not used to limit the present application. The present application can be variously changed and modified by those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims

1. A system for the treatment of 1,1-dichloroethene organic exhaust gas by means of oxidative cracking, characterized in that it comprises: The application relates to a waste gas pipeline (1) and an air pipeline (2) which are connected with a temporary oxygen cracking device through a blower (4), the temporary oxygen cracking device comprises, in sequence through pipeline connection, a preheating heat exchanger (5), an electric heater (6) and a reaction bed (7); the reaction bed (7) is connected with the preheating heat exchanger (5) through a heat exchange inlet gas pipeline (8), the preheating heat exchanger (5) is connected with a primary washing tower (10) through a heat exchange outlet gas pipeline (9), the bottom of the primary washing tower (10) is connected with a lye tank (12), the top of the lye tank (12) is provided with a secondary washing tower (11), the top of the secondary washing tower (11) is connected with an activated carbon adsorption device (18) through a pipeline, a water pipeline (13) is connected with the primary washing tower (10) and the secondary washing tower (11) respectively, a lye pipeline (14) is connected with the lye tank (12), the lye tank (12) is connected with a lye cooler (17) through a first lye pump (15) and a second lye pump (16) in parallel, the outlet of the lye cooler (17) is divided into three pipelines, one is a first lye conveying pipeline (19) connected with the primary washing tower (10), one is a second lye conveying pipeline (20) connected with the secondary washing tower (11), and one is a waste lye treatment and conveying pipeline (21) connected with a neutralization kettle (27); the neutralization kettle (27) is provided with a hydrochloric acid pipeline (28), the neutralization kettle (27) is connected with an evaporation and crystallization device (23) through a filtering device (22), the evaporation and crystallization device (23) is connected with a recovered water storage tank (25) through an evaporation water cooler (24), and the recovered water storage tank (25) is connected with the water pipeline (13) through a recovered water conveying pipeline (26); the waste gas pipeline (1) and the air pipeline (2) are respectively provided with a waste gas adjusting valve (101) and an air adjusting valve (201); the reaction bed (7) is internally provided with a third temperature sensor (701); the waste gas pipeline (1) is provided with an emergency relief pipeline (3); and the emergency relief pipeline (3) is provided with an emergency relief valve (301).

2. The system for the treatment of 1,1-dichloroethylene organic waste by the process of oxidative cracking according to claim 1, characterized by the fact that, Sampling ports (30) are arranged on the outlet pipelines of the first lye pump (15) and the second lye pump (16).

3. The system for the treatment of 1,1-dichloroethene organic waste by the process of oxidative cracking according to claim 1, characterized by the fact that, The evaporation and crystallization device (23) is connected with a sodium chloride finished product storage tank (29).

4. The system for the treatment of 1,1-dichloroethene organic waste by the process of oxidative cracking according to claim 1, characterized by the fact that, The output end of the third temperature sensor (701) is electrically connected with the control ends of the waste gas adjusting valve (101), the air adjusting valve (201) and the emergency relief valve (301).

5. The system for the treatment of 1,1-dichloroethene organic waste by the process of oxidative cracking according to claim 1, characterized by the fact that, First and second temperature sensors (601) and (602) are arranged on the pipelines before the inlet and after the outlet of the electric heater (6) respectively.

6. The system for the treatment of 1,1-dichloroethene organic waste by the process of oxidative cracking according to claim 1, characterized by the fact that, A first temperature sensing controller (603) is further arranged on the pipeline after the outlet of the electric heater (6), and a second temperature sensing controller (604) is arranged in the electric heater (6).

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