Feeding system for producing bis (chlorosulfonyl) imide

Abstract

The utility model discloses a feeding system for producing bis (chlorosulfonyl) imide, which belongs to the technical field of chemical equipment, and comprises a thionyl chloride storage tank, a chlorosulfonic acid storage tank, a batching tank and a chemical material tank, and thionyl chloride in the thionyl chloride storage tank is conveyed to the batching tank through a conveying assembly; meanwhile, a lifting appliance lifts a sulfamic acid packaging bag to the position above the batching tank, sulfamic acid is added into the batching tank, after thionyl chloride and sulfamic acid are mixed in the batching tank, the mixed material liquid is pressed into a material melting tank through compressed air to be heated, then the material liquid in the material melting tank is pressed into a reaction tank through the compressed air, and the reaction tank is heated; meanwhile, chlorosulfonic acid is dropwise added into the reaction tank in different areas through the distribution conveying pipeline, and the materials enter a distillation device of a distillation process after being fully reacted. According to the continuous feeding device, continuous feeding can be realized, the reaction efficiency is improved by adding chlorosulfonic acid in multiple drops, the production efficiency is improved, the production cost is reduced compared with batch production, and the requirement of continuous production is met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to chemical equipment technical field, especially relates to a feeding system for double chlorosulfonamide production. BACKGROUND

[0002] Double chlorosulfonamide is a common organic synthesis intermediate, is widely used in pesticide, medicine, dye and other fields, has very high economic value. Double chlorosulfonamide is synthesized with chlorosulfonamide, chlorosulfonic acid and aminosulfonic acid as raw material, and the reaction process is as follows:

[0003] 2SOCl2+ClSO3H+NH2SO3H Cl2HNO4S2+2SO2 +3HCl .

[0004] In the production process of double chlorosulfonamide, chlorosulfonamide, aminosulfonic acid and chlorosulfonic acid are mixed, and then reacted at a suitable temperature to obtain double chlorosulfonamide. The current feeding operation is to add chlorosulfonic acid, aminosulfonic acid and chlorosulfonamide in the reaction tank one by one, and the batch production mode is adopted. This production mode has the defects of low production efficiency and high production cost, and cannot realize continuous production. INVENTION CONTENTS

[0005] In order to solve the above problems, the utility model provides a feeding system for double chlorosulfonamide production.

[0006] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0007] A feeding system for double chlorosulfonamide production, comprising a chlorosulfonamide storage tank, a chlorosulfonic acid storage tank, a batching tank and a material tank, the chlorosulfonamide in the chlorosulfonamide storage tank is conveyed to the batching tank by a conveying assembly, a lifting appliance is arranged above the batching tank, the lifting appliance is used for lifting an aminosulfonic acid packaging bag to above the batching tank and adding aminosulfonic acid into the batching tank, the top of the batching tank is connected with a compressed air pipe, the compressed air in the compressed air pipe can continuously press the mixed liquid in the batching tank into the material tank through a discharge pipe, the material tank is connected with a reaction tank of a synthesis process through the discharge pipe, the chlorosulfonic acid storage tank is connected with different areas in the reaction tank through a distribution conveying pipeline, and is used for adding chlorosulfonic acid into the reaction tank in different zones, a stirrer is arranged in the batching tank and the material tank, and an exhaust pipe is arranged on the top of the material tank and the reaction tank, and a heating layer is arranged on the outer wall.

[0008] Further, the chlorosulfonic acid storage tank is externally provided with a heat preservation and sun protection layer, the top exhaust pipe of the chlorosulfonic acid storage tank is connected with a gas phase condenser, the gas phase condenser is connected with a conveying pump, and the conveying pump and a feeding pipe are used to feed the chlorosulfonic acid storage tank; the top of the chlorosulfonic acid storage tank is provided with a pressure sensor and a pressure relief valve connected with the pressure sensor, and the chlorosulfonic acid storage tank and the gas phase condenser outside the chlorosulfonic acid storage tank are both provided with liquid level meters.

[0009] Further, the conveying assembly comprises a magnetic force pump and a feeding pipe, the inlet of the magnetic force pump is connected with the bottom outlet of the chlorosulfonic acid storage tank, and the magnetic force pump is connected with the distribution tank through the feeding pipe.

[0010] Further, the top exhaust pipe of the chlorosulfonic acid storage tank is connected with a gas phase condenser, the gas phase condenser is connected with a conveying pump, and the conveying pump and a feeding pipe are used to feed the chlorosulfonic acid storage tank; the chlorosulfonic acid storage tank and the gas phase condenser outside the chlorosulfonic acid storage tank are both provided with liquid level meters, and the chlorosulfonic acid storage tank is provided with a pressure sensor; the bottom of the chlorosulfonic acid storage tank is connected with a distribution conveying pipeline and a reaction tank through a magnetic force pump and a feeding pipe.

[0011] Further, an intermediate tank is arranged between the distribution tank and the chemical tank, the inlet end of the discharge pipe of the distribution tank extends downward to be close to the bottom of the distribution tank, the outlet end of the discharge pipe is connected with the top of the intermediate tank, the inlet end of the discharge pipe of the intermediate tank extends downward to be close to the bottom of the intermediate tank, the outlet end of the discharge pipe extends into the chemical tank and is close to the bottom of the chemical tank; the discharge pipes between the distribution tank and the intermediate tank and between the intermediate tank and the chemical tank are all inclined downward along the flow direction of the material liquid.

[0012] Further, the chemical tank and the reaction tank are both horizontal tank bodies provided with heating layers, a plurality of baffles and a plurality of baffle plates are arranged in the chemical tank along the length direction of the chemical tank, the baffles and the baffle plates are arranged alternately, the upper end of the baffle plate is connected with the top wall of the chemical tank, the lower end of the baffle plate is provided with a gap with the bottom of the chemical tank, the lower end of the baffle is connected with the bottom of the chemical tank, and the upper end of the baffle is provided with a gap with the top wall of the chemical tank; the chemical tank is divided into a plurality of areas through the baffles and the baffle plates, each area is provided with a thermometer and a stirrer, and the top of each area is provided with an exhaust pipe; the internal structure of the reaction tank is the same as that of the chemical tank, and the top of each area in the reaction tank is provided with a chlorosulfonic acid feeding port; the bottom of the chemical tank and the reaction tank is provided with a discharge pipe.

[0013] Further, the bottom discharge pipe of the chemical tank is connected with the upper feeding port of the reaction tank, the middle discharge port of the chemical tank is connected with the lower feeding port of the reaction tank; the discharge port of the reaction tank is provided with a conveying pump, which is used to convey the material liquid to a distillation device of a distillation process to be distilled.

[0014] Furthermore, the distribution and delivery pipeline includes a main feed pipe and multiple feed branch pipes connected in parallel. Each feed branch pipe is equipped with a flow meter and a control valve connected to the central control panel. The outlets of the multiple feed branch pipes are sequentially connected to the chlorosulfonic acid inlets on the top wall of each area inside the reaction vessel.

[0015] Furthermore, the top of the reaction vessel is provided with multiple exhaust pipes, and the multiple exhaust pipes are respectively connected to multiple condensers. The bottom discharge pipe of the condenser is connected to the top of the reaction vessel, the top gas outlet of the condenser is connected to the exhaust manifold, the exhaust manifold is connected to the lower inlet of the low-temperature heat exchanger, the bottom outlet of the low-temperature heat exchanger is connected to the top of the reaction vessel, and the top gas outlet of the low-temperature heat exchanger is connected to the tail gas pipe.

[0016] Furthermore, the inner cavity between the inlet and outlet of the chemical tank is sequentially arranged with baffles, baffles, baffles, and baffles to divide its inner cavity into 5 areas; the reaction tank has the same interior as the chemical tank, and there are two reaction tanks connected in series; there are 10 feed branch pipes, and the 10 feed branch pipes correspond one-to-one with the areas inside the two reaction tanks.

[0017] The technological advancements achieved by this invention compared to existing technologies are as follows:

[0018] This invention uses a conveying assembly to transport thionyl chloride from a storage tank to a mixing tank. Simultaneously, a lifting device lifts a bag of aminosulfonic acid and moves it above the mixing tank, adding aminosulfonic acid into the tank. After the thionyl chloride and aminosulfonic acid mix in the mixing tank, compressed air forces the mixture into a reaction tank for heating. The liquid in the reaction tank is then forced into a reaction tank by compressed air. Simultaneously, chlorosulfonic acid is added dropwise to the reaction tank through distribution pipelines. After the materials have fully reacted, they enter the distillation unit for the distillation process. This invention enables continuous feeding, improves reaction efficiency through multi-point dropwise addition of chlorosulfonic acid, and increases production efficiency. Compared to batch production, it reduces production costs and meets the requirements of continuous production. Attached Figure Description

[0019] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0020] In the attached diagram:

[0021] Figure 1 A schematic diagram of a feeding system for the production of dichlorosulfonylimide provided in this embodiment of the present invention;

[0022] Figure 2 for Figure 1 Schematic diagram of the structure of Sinochem's material tank;

[0023] Fig.:

[0024] 1 - magnetic pump; 2 - condenser; 3 - low-temperature heat exchanger; 4 - exhaust manifold; 5 - baffle; 6 - baffle; 7 - discharge pipe; 8 - tail gas pipe; 9 - control valve; 10 - pressure sensor; 11 - thermometer; 12 - stirrer; 13 - liquid level meter; 14 - flow meter;

[0025] 101 - thionyl chloride storage tank, 102 - chlorosulfonic acid storage tank, 103 - batching tank, 104 - chemical tank, 105 - lifting appliance, 106 - compressed air pipe, 107 - gas phase condenser, 108 - delivery pump, 109 - intermediate tank, 110 - feed main pipe, 111 - feed branch pipe; 201 - reaction tank. DETAILED DESCRIPTION

[0026] The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of the present application will be described below with reference to the accompanying drawings.

[0027] As Figure 1 shown, a feeding system for bis-chlorosulfonyl imide production, the feeding system includes thionyl chloride storage tank 101, chlorosulfonic acid storage tank 102, batching tank 103 and chemical tank 104, the thionyl chloride in the thionyl chloride storage tank 101 is delivered to the batching tank 103 by the delivery assembly, the upper part of the batching tank 103 is provided with a lifting appliance 105, the lifting appliance 105 is used to lift the aminosulfonic acid packaging bag to the upper part of the batching tank 103 and add aminosulfonic acid into the batching tank 103; the top of the batching tank 103 is connected with a compressed air pipe 106, the compressed air in the compressed air pipe 106 can continuously press the mixed liquid in the batching tank 103 into the chemical tank 104 through the discharge pipe; the chemical tank 104 is connected with the reaction tank 201 of the synthesis process through the discharge pipe, the chlorosulfonic acid storage tank 102 is connected with different areas in the reaction tank 201 through the distribution delivery pipeline, used for adding chlorosulfonic acid into the reaction tank 201 in different areas; the stirring devices are arranged in the batching tank 103 and the chemical tank 104, the top of the chemical tank 104 and the reaction tank 201 is provided with an exhaust pipe, and the outer wall is provided with a heating layer.

[0028] In the specific implementation, the chlorosulfuric acid storage tank 101 is externally provided with a heat preservation and sun protection layer, the top exhaust pipe of the chlorosulfuric acid storage tank 101 is connected with the gas phase condenser 107, the gas phase condenser 107 is connected with the delivery pump 108, the delivery pump 108 and the feeding pipe are used to feed the chlorosulfuric acid into the chlorosulfuric acid storage tank 101, the outlet end of the feeding pipe is close to the bottom of the chlorosulfuric acid storage tank, meanwhile, the delivery pump 108 can be connected with the unloading port of the tank car, so as to facilitate unloading; the top of the chlorosulfuric acid storage tank 101 is provided with a pressure sensor and a pressure relief valve connected therewith, so as to ensure the safe operation of the chlorosulfuric acid storage tank; meanwhile, the chlorosulfuric acid storage tank 101 and the gas phase condenser 107 outside the chlorosulfuric acid storage tank are both provided with liquid level meters. The heat preservation and sun protection layer is formed by winding a coil outside the chlorosulfuric acid storage tank and wrapping the coil with heat preservation materials; the outer wall of the gas phase condenser is simultaneously provided with cooling medium inlets and outlets, so as to cool the chlorosulfuric acid gas passing through. Since the chlorosulfuric acid is a volatile liquid, the gas phase condenser can be used to cool and condense the volatilized chlorosulfuric acid, so as to avoid waste caused by volatilization.

[0029] The delivery assembly comprises a magnetic force pump 1 and a feeding pipe, the inlet of the magnetic force pump 1 is connected with the bottom outlet of the chlorosulfuric acid storage tank 101, and the magnetic force pump 1 is connected with the batching tank 103 through the feeding pipe. The chlorosulfuric acid is delivered into the batching tank by starting the magnetic force pump, and the sulfamic acid is hoisted into the batching tank, so that the chlorosulfuric acid and the sulfamic acid can be fully mixed after being stirred.

[0030] As a preferred structure, the top exhaust pipe of the chlorosulfuric acid storage tank 101 is connected with the gas phase condenser 107, the gas phase condenser 107 is connected with the delivery pump 108, and the delivery pump 108 and the feeding pipe are used to feed the chlorosulfuric acid into the chlorosulfuric acid storage tank 102; the chlorosulfuric acid storage tank 102 and the gas phase condenser 107 outside the chlorosulfuric acid storage tank are both provided with liquid level meters, and the chlorosulfuric acid storage tank 102 is provided with a pressure sensor; the bottom of the chlorosulfuric acid storage tank 102 is connected with the distribution and delivery pipeline and the reaction tank 201 through the magnetic force pump 1 and the feeding pipe. Similarly, the outer wall of the gas phase condenser is simultaneously provided with cooling medium inlets and outlets, so as to cool the chlorosulfuric acid gas passing through. Since the chlorosulfuric acid is also a volatile liquid, the gas phase condenser can be used to cool and condense the volatilized chlorosulfuric acid, so as to avoid waste caused by volatilization.

[0031] In the embodiment of the utility model, the intermediate tank 109 is arranged between the batching tank 103 and the material mixing tank 104, the discharge pipe inlet end of the batching tank 103 extends downwards to the bottom of the batching tank 103, the discharge pipe outlet end is connected with the top of the intermediate tank 109, the discharge pipe inlet end of the intermediate tank 109 extends downwards to the bottom of the intermediate tank 109, the discharge pipe outlet end extends into the material mixing tank 104 and approaches the bottom of the material mixing tank 104; the discharge pipes between the batching tank 103 and the intermediate tank 109 and between the intermediate tank 109 and the material mixing tank 104 all incline downwards along the flow direction of the material liquid, so as to avoid the material retention in the discharge pipe. After the sulfamic acid and the thionyl chloride are mixed in the batching tank, the mixture enters the intermediate tank for re-stirring, so that the two raw materials can be fully mixed.

[0032] As a preferred structure, as shown in Figure 1 、 2 , the material mixing tank 104 and the reaction tank 201 are both horizontal tank bodies with heating layers, a plurality of baffles 5 and a plurality of baffle plates 6 are arranged in the material mixing tank 104 along the length direction thereof, the baffles 5 and the baffle plates 6 are arranged alternately, the upper end of the baffle plate 6 is connected with the top wall of the material mixing tank 104, and the lower end is provided with a gap with the bottom of the material mixing tank 104, the lower end of the baffle 5 is connected with the bottom of the material mixing tank 104, and the upper end is provided with a gap with the top wall of the material mixing tank 104; the material mixing tank 104 is divided into a plurality of areas by the baffles 5 and the baffle plates 6, a thermometer and a stirrer are arranged in each area, and an exhaust pipe is arranged at the top of each area; the internal structure of the reaction tank 201 is the same as that of the material mixing tank 104, and a chlorosulfonic acid inlet is arranged at the top of each area in the reaction tank 201; the bottom of the material mixing tank 104 is provided with a discharge pipe 7, the bottom discharge pipe of the material mixing tank 104 is connected with the upper inlet of the reaction tank 201, and the middle outlet of the material mixing tank 104 is connected with the lower inlet of the reaction tank 201; the discharge outlet of the reaction tank 201 is provided with a conveying pump 108 for conveying the material liquid to a distillation device of a distillation process for distillation.

[0033] The mixture of the sulfamic acid and the thionyl chloride is preheated in the material mixing tank, the temperature of the material can be increased to 70-75 degrees, and the temperature is maintained for 6 hours; then the mixture enters the reaction tank, the chlorosulfonic acid is added to the reaction tank in a partitioned manner through a distribution conveying pipeline, the material can be heated and reacted in the reaction tank, and the reaction efficiency is improved.

[0034] In the specific design, as shown in Figure 1As shown, the distribution pipeline includes a feed main pipe 110 and a plurality of feed branch pipes 111 connected in parallel thereto, the feed branch pipes 111 are provided with flow meters 14 and control valves 9 connected with the central control console, and the outlets of the plurality of feed branch pipes 111 are sequentially connected with chlorosulfonic acid feeding ports on the top walls of the respective regions in the reaction tank 201; the feed main pipe 110 is connected with the bottom outlet of the chlorosulfonic acid storage tank 102 through the magnetic pump 1. The multi-stage control valve can be controlled by the central control console to start the dropwise addition of chlorosulfonic acid, and the dropwise addition speed is controlled according to the discharge speed of the material mixing tank; meanwhile, the gas emission amount of the reaction tank during the dropwise addition process is recorded. With the reaction of the material in the reaction tank, the generated hydrogen chloride and sulfur dioxide are discharged from the exhaust pipe, and the gas emission of the reaction tank gradually slows down within 8 hours after the dropwise addition of chlorosulfonic acid is completed; the temperature is continuously increased to 85-90 degrees to ensure that the material is fully reacted.

[0035] In Figure 2 In the specific embodiment shown, the internal cavity between the inlet and outlet of the material mixing tank 104 is sequentially arranged with baffles 5, baffles 6, baffles 5, baffles 6, for separating the internal cavity into five regions; the reaction tank 201 has the same internal structure as the material mixing tank 104, and the reaction tank 201 is two, and the two reaction tanks 201 are connected in series; the feed branch pipe is 10, and the 10 feed branch pipes correspond one by one to the regions in the two reaction tanks 201.

[0036] Further optimize the above scheme, such as Figure 1 As shown, the top of the reaction tank 201 is provided with a plurality of exhaust pipes, and the plurality of exhaust pipes are respectively connected with a plurality of condensers 2, the bottom discharge pipe of the condenser 2 is connected with the top of the reaction tank 201, the top gas outlet of the condenser 2 is connected with the exhaust main pipe 4, the exhaust main pipe 4 is connected with the lower inlet of the low-temperature heat exchanger 3, the bottom outlet of the low-temperature heat exchanger 3 is connected with the top of the reaction tank 201, and the top gas outlet of the low-temperature heat exchanger 3 is connected with the tail gas pipe 8. At the same time, control valves and pressure sensors connected therewith are arranged on the top gas outlet pipes of the condenser 2 and the low-temperature heat exchanger 3, and the pressure sensors are used to detect the gas pressure of the condenser 2 and the low-temperature heat exchanger 3. The chlorosulfonic acid and thionyl chloride in the exhaust gas are cooled and cooled by the condenser and the low-temperature condenser, so that they are condensed and flow back to the reaction tank, thereby improving the material utilization rate. The finally discharged hydrogen chloride and sulfur dioxide are converged to the tail gas pipe and enter the tail gas treatment system for purification treatment.

[0037] In a specific production batch of the utility model, 21 tons of thionyl chloride and 5.06 tons of sulfamic acid, 6.3 tons of chlorosulfonic acid are used for reaction, the thionyl chloride and the sulfamic acid are heated to 70-75 degrees in the material mixing tank, and the temperature is maintained for 6 hours; the mixed material enters the reaction tank, the chlorosulfonic acid is added dropwise in multiple points, and the stirring is carried out during the dropwise addition, so that the reaction efficiency is improved.

[0038] In summary, the utility model has the advantages of reasonable structure design, compact and coherent structure, after mixing of thionyl chloride and sulfamic acid in the ingredient tank, the mixed liquid is pressed into the heating tank by compressed air, then the liquid in the heating tank is pressed into the reaction tank by compressed air, and the chlorosulfonic acid is added into the reaction tank, so that the material can fully react.

[0039] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and not for limiting the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical scheme recorded in the foregoing embodiments, or equivalent replacement for part of the technical features. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model, should be included in the scope of protection of the utility model claims.

Claims

1. A feed system for the production of bischlorosulfimide, characterized in that: The application relates to a sulfuryl chloride and sulfonic acid synthesis device, which comprises a sulfuryl chloride storage tank, a chlorosulfonic acid storage tank, a batching tank and a chemical tank, sulfuryl chloride in the sulfuryl chloride storage tank is delivered to the batching tank through a delivery assembly, a lifting appliance is arranged above the batching tank, the lifting appliance is used for lifting an amino sulfonic acid packaging bag to above the batching tank and adding the amino sulfonic acid into the batching tank, a compressed air pipe is connected to the top of the batching tank, compressed air in the compressed air pipe can continuously press the mixed liquid in the batching tank into the chemical tank through a discharge pipe, the chemical tank is connected with a reaction tank of a synthesis process through the discharge pipe, the chlorosulfonic acid storage tank is connected with different areas in the reaction tank through a distribution delivery pipeline and is used for adding chlorosulfonic acid into the reaction tank in different areas, a stirrer is arranged in the batching tank and the chemical tank, exhaust pipes are arranged on the top of the chemical tank and the reaction tank, and heating layers are arranged on the outer walls of the chemical tank and the reaction tank.

2. The system for feeding of dcs production according to claim 1, characterized in that: The outer part of the sulfuryl chloride storage tank is provided with a heat preservation and sun protection layer, the top exhaust pipe of the sulfuryl chloride storage tank is connected with a gas phase condenser, the gas phase condenser is connected with a delivery pump, the delivery pump and a feeding pipe are used for feeding into the sulfuryl chloride storage tank, a pressure sensor and a pressure relief valve connected with the pressure sensor are arranged on the top of the sulfuryl chloride storage tank, and liquid level meters are arranged on the sulfuryl chloride storage tank and the gas phase condenser outside the sulfuryl chloride storage tank.

3. The system for feeding of dcs production according to claim 1, characterized in that: The delivery assembly comprises a magnetic force pump and a feeding pipe, the inlet of the magnetic force pump is connected with the bottom outlet of the sulfuryl chloride storage tank, and the magnetic force pump is connected with the batching tank through the feeding pipe.

4. The system for feeding of dcs production according to claim 1, characterized in that: The top exhaust pipe of the chlorosulfonic acid storage tank is connected with a gas phase condenser, the gas phase condenser is connected with a delivery pump, the delivery pump and a feeding pipe are used for feeding into the chlorosulfonic acid storage tank, liquid level meters are arranged on the chlorosulfonic acid storage tank and the gas phase condenser outside the chlorosulfonic acid storage tank, a pressure sensor is arranged on the chlorosulfonic acid storage tank, and the bottom of the chlorosulfonic acid storage tank is connected with a distribution delivery pipeline and a reaction tank through a magnetic force pump and a feeding pipe.

5. The system for feeding of dcs production according to claim 1, characterized in that: An intermediate tank is arranged between the batching tank and the chemical tank, the inlet end of the discharge pipe of the batching tank extends downwards to be close to the bottom of the batching tank, the outlet end of the discharge pipe is connected with the top of the intermediate tank, the inlet end of the discharge pipe of the intermediate tank extends downwards to be close to the bottom of the intermediate tank, the outlet end of the discharge pipe extends into the chemical tank and is close to the bottom of the chemical tank, the discharge pipes between the batching tank and the intermediate tank and between the intermediate tank and the chemical tank are all inclined downwards along the flow direction of the liquid.

6. The system for feeding of dcs production according to claim 5, characterized in that: The chemical tank and the reaction tank are both horizontal tanks with heating layers, a plurality of baffles and a plurality of baffle plates are arranged in the chemical tank along the length direction of the chemical tank, the baffles and the baffle plates are arranged alternately, the upper end of the baffle plate is connected with the top wall of the chemical tank, the lower end of the baffle plate is arranged with a gap on the bottom of the chemical tank, the lower end of the baffle plate is connected with the bottom of the chemical tank, and the upper end of the baffle plate is arranged with a gap on the top wall of the chemical tank, the chemical tank is divided into a plurality of areas through the baffles and the baffle plates, a thermometer and a stirrer are arranged in each area, and an exhaust pipe is arranged on the top of each area, the internal structure of the reaction tank is the same as that of the chemical tank, a chlorosulfonic acid feeding port is arranged on the top of each area in the reaction tank, and a discharge pipe is arranged on the bottom of the chemical tank and the reaction tank.

7. The system for feeding of dcs production according to claim 6, characterized in that: The bottom discharge pipe of the chemical tank is connected with the upper inlet of the reaction tank, and the middle discharge pipe of the chemical tank is connected with the lower inlet of the reaction tank; the discharge pipe of the reaction tank is provided with a delivery pump for delivering the liquid to the distillation device of the distillation process for distillation.

8. The system for feeding of dcs production according to claim 6, characterized in that: The distribution delivery pipeline comprises a feed main pipe and a plurality of feed branch pipes connected in parallel with the feed main pipe, the feed branch pipes are provided with flow meters and control valves connected with the center console, and the outlets of the plurality of feed branch pipes are connected with the chlorosulfonic acid inlet ports on the top walls of the respective areas in the reaction tank in sequence.

9. The system for feeding of dcsulfϊnam production according to claim 6, characterized in that: The top of the reaction tank is provided with a plurality of exhaust pipes, and the plurality of exhaust pipes are connected with a plurality of condensers respectively, the bottom discharge pipe of the condenser is connected with the top of the reaction tank, the top gas outlet of the condenser is connected with an exhaust main pipe, the exhaust main pipe is connected with the lower inlet of a low-temperature heat exchanger, the bottom outlet of the low-temperature heat exchanger is connected with the top of the reaction tank, and the top gas outlet of the low-temperature heat exchanger is connected with an exhaust pipe.

10. The system for feeding of dcsulfϊnam production according to claim 8, characterized in that: The internal cavity between the inlet and outlet of the chemical tank is sequentially provided with baffles, baffles, baffles and baffles for separating the internal cavity into five areas; the internal cavity of the reaction tank is the same as that of the chemical tank, the reaction tank is two, and the two reaction tanks are connected in series; the feed branch pipes are 10, and the 10 feed branch pipes correspond to the areas in the two reaction tanks one by one.

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