A system and method for comprehensive energy utilization of thionyl chloride catalyst

Abstract

The invention discloses a system and method for comprehensive energy utilization of a thionyl chloride catalyst. The system comprises a thionyl chloride catalyst, a heat exchanger, a lithium bromide unit for cooling pure water, and a chilled water system. The outlet end of the thionyl chloride catalyst is connected to the heat exchanger via a pipeline, and gas with a certain amount of heat at the outlet of the thionyl chloride catalyst is directed into the heat exchanger. Pure water is provided in the heat exchanger for continuously passing through the heat exchanger to absorb heat in the gas. The output end of the heat exchanger is connected to the lithium bromide unit via a pipeline, and the output end of the lithium bromide unit is connected to the chilled water system. The invention overcomes the shortcomings of the prior art, recycles energy, reduces production costs, and significantly improves production efficiency. At the same time, the entire production process is optimized for reaction efficiency and material utilization, thereby increasing the economic benefits of the enterprise and having high social use value and application prospects.

Description

Technical Field

[0001] The present invention relates to the technical field of chemical industry, and in particular to a system and method for comprehensive energy utilization of a thionyl chloride catalyst. Background Art

[0002] Sulfonyl chloride (SOCl2) is an important fine chemical raw material. There are four domestic production technologies for thionyl chloride: chlorosulfonic acid method, co-production method, sulfur trioxide method and sulfur dioxide vapor phase method. The main raw materials for the sulfur dioxide vapor phase method to produce thionyl chloride are SO2, Cl2 and S2Cl2. The reaction equation is: S2Cl2+Cl2→SCl2

[0003] The catalyst is an exothermic reaction, and the outlet gas temperature is 220-230°C, requiring condensation in a heat exchanger. This results in wasted cooling water energy within the heat exchanger. Using pure water to exchange heat with the synthesis gas significantly improves energy utilization. Furthermore, when exhaust gas enters the exhaust system for treatment during production, it requires a refrigeration unit to cool and condense it. This process places a heavy load on the chilled water system, impacting production efficiency. The inventors devised a method to first exchange heat between pure water and the synthesis gas, allowing the water, at a certain temperature, to be cooled by a lithium bromide unit. This allows the pure water to replenish the chilled water system in a timely manner, thus achieving comprehensive energy utilization.

[0004] Therefore, in view of this, adhering to the rich design, development and actual production experience of many years in the relevant industry, the existing structure and defects are studied and improved, and a system and method for comprehensive energy utilization of thionyl chloride catalyst is provided, in order to achieve a more practical purpose. Summary of the Invention

[0005] In order to solve the problem mentioned in the above background technology that the catalyst is an exothermic reaction and the outlet gas phase temperature is 220-230°C, which requires a heat exchanger for condensation, resulting in energy waste, the present invention provides a system and method for comprehensive energy utilization of thionyl chloride catalyst.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A system for comprehensive energy utilization of a thionyl chloride catalyst comprises a thionyl chloride catalyst, a heat exchanger, a lithium bromide unit for cooling pure water, and a chilled water system. The outlet of the thionyl chloride catalyst is connected to the heat exchanger via a pipeline, and gas with a certain amount of heat at the outlet of the thionyl chloride catalyst is directed into the heat exchanger. Pure water is provided in the heat exchanger for continuously passing through the heat exchanger to absorb heat in the gas. The output of the heat exchanger is connected to the lithium bromide unit via a pipeline, and the output of the lithium bromide unit is connected to the chilled water system.

[0008] Preferably, the heat exchanger includes a heat exchange tank, an air inlet pipe for gas entry is provided at the bottom of the heat exchange tank, and an exhaust pipe for gas discharge is provided at the upper end of the heat exchange tank, a guide mechanism is provided in the heat exchange tank between the air inlet pipe and the exhaust pipe, and is used for pure water to pass through the heat exchange tank and be heated by the gas, a water inlet pipe is provided at the upper end of the heat exchange tank for pure water to enter, and the end of the water inlet pipe is connected to the inlet at the upper end of the guide mechanism, a drain pipe for pure water discharge is provided at the bottom of the heat exchange tank, and the bottom outlet of the guide mechanism is connected to the end of the drain pipe.

[0009] Preferably, the diversion mechanism includes a heat exchange box for converting a water flow into multiple dispersed water flows and a diversion pipe for mutual circulation between adjacent heat exchange boxes. The heat exchange box located at the top is connected to the water inlet pipe, and the heat exchange box located at the bottom is connected to the drain pipe.

[0010] Preferably, the heat exchange grid box includes a heat exchange tube, a first guide ring tube, a second guide ring tube and a connecting pipe. There are two first guide ring tubes, which are parallel to each other. A connecting pipe is provided between the upper and lower adjacent first guide ring tubes. The first guide ring tubes and the connecting pipe constitute the external frame of the heat exchange grid box. The second guide ring tube is provided inside each of the first guide ring tubes. A plurality of heat exchange tubes that are connected and evenly distributed radially are provided between the first guide ring tube and the second guide ring tube. The upper and lower second guide ring tubes are respectively connected to the corresponding guide pipes.

[0011] Preferably, the upper and lower ends of the heat exchange grid box are provided with a first diversion plate for air flow diversion, the first diversion plate is fixedly connected to the inner wall of the heat exchange tank, and the center of the first diversion plate is provided with a first diversion hole for air flow to pass through. The heat exchange grid box located between adjacent first diversion plates is provided with a second diversion plate, the second diversion plate is fixedly connected to the inner wall of the heat exchange tank, and a plurality of second diversion holes for air flow to pass through are provided on the second diversion plate close to the inner wall of the heat exchange tank.

[0012] Preferably, a first flow equalizing box and a second flow equalizing box are provided in the heat exchange tank, the bottom of the first flow equalizing box is connected to the topmost guide pipe, and one end of the first flow equalizing box is connected to the water inlet pipe, the second flow equalizing box is located at the bottom of the heat exchange tank, one end of the second flow equalizing box is connected to the bottommost guide pipe, and the other end of the second flow equalizing pipe is connected to the drain pipe.

[0013] A method for comprehensive energy utilization of a thionyl chloride catalyst comprises the following steps:

[0014] S1: The gas phase at the outlet of the thionyl chloride catalyst is fed into a heat exchanger through an air inlet pipe, causing the gas with a certain amount of heat to move along a fixed channel in the heat exchanger. Pure water is also fed into the heat exchanger through a water inlet pipe. The pure water moves in the fixed channel in the heat exchanger in the opposite direction of the gas phase, and the gas phase at the outlet of the catalyst exchanges heat with the pure water.

[0015] S2: The pure water after heat exchange enters the lithium bromide unit, and the lithium bromide unit is used to cool the pure water;

[0016] S3: The cooling water produced through heat exchange enters the chilled water system in the device area, thereby replenishing the cooling water in the chilled water system in a timely manner.

[0017] Preferably, the temperature of the gas phase at the catalyst outlet in S1 is controlled at 220-230°C.

[0018] Preferably, the temperature of the pure water after the heat exchange in S1 is 90-100°C.

[0019] Preferably, the S2 pure water is 100m 3 / h enters the lithium bromide unit.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. In the present invention, energy loss is reduced by absorbing excess heat generated by the catalyst reaction; the lithium bromide unit is used to cool the pure water, so that the pure water can be replenished to the cooling water system in a timely manner, thereby reducing the chilled water load, improving production efficiency, and optimizing the reaction efficiency and energy utilization rate of the entire production process, which significantly increases the economic benefits of the enterprise.

[0022] 2. The design of the guide mechanism, heat exchange tank, exhaust pipe, air inlet pipe, water inlet pipe and drain pipe enables the hot gas to contact the guide mechanism when passing through the heat exchange tank, and transfer the heat to the guide mechanism through contact. At the same time, pure water passes through the inside of the guide mechanism. In this way, the heat absorbed by the guide mechanism can be promptly absorbed by the pure water and flow away with the pure water, thereby achieving heat exchange. The guide mechanism adopts a serpentine design, which can effectively increase the contact area between the gas and the guide mechanism, thereby improving the overall heat exchange efficiency.

[0023] 3. The unique design of the heat exchange grid box can convert one stream of pure water entering the heat exchange tank into multiple streams of pure water, and ensure that the pure water moves from top to bottom. The design of the heat exchange grid box and the guide pipe can effectively increase the residence time of pure water in the heat exchange tank, thereby improving the heating efficiency of the gas to the pure water, and also improving the cooling effect of the pure water on the gas.

[0024] In summary, the present invention overcomes the shortcomings of the existing technology, has a reasonable design, recycles energy, reduces production costs, greatly improves production efficiency, and at the same time optimizes the reaction efficiency and material utilization rate of the entire production process, increases the economic benefits of the enterprise, and has high social use value and application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 Flow chart of the method of the present invention.

[0027] Figure 2 It is a schematic diagram of the three-dimensional structure of the heat exchanger of the present invention.

[0028] Figure 3 It is a schematic diagram of the main cross-sectional structure of the heat exchanger of the present invention.

[0029] Figure 4 It is a schematic diagram of the three-dimensional connection structure of the heat exchange box of the present invention.

[0030] Figure 5 It is a schematic diagram of the three-dimensional structure of the first diverter plate and the second diverter plate of the present invention.

[0031] Figure 6 It is a schematic diagram of the three-dimensional connection structure of the heat exchange grid box, the first diverter plate and the second diverter plate of the present invention.

[0032] Figure 7 It is a schematic diagram of the main cross-sectional structure of the rotating plate and rotating shaft of the present invention.

[0033] Figure 8 It is a schematic diagram of the cross-sectional structure of the cavity, the first dust suction hole, the second dust suction hole and the rotating axis of the present invention.

[0034] Figure 9 It is a schematic diagram of the cross-sectional connection structure of the recovery pipe and the regulating ring pipe of the present invention.

[0035] Figure 10 It is a schematic diagram of the top view of the rotating plate of the present invention.

[0036] In the figure: 10, heat exchanger; 1, heat exchange tank; 11, exhaust pipe; 12, support frame; 13, water inlet pipe; 14, drain pipe; 15, air inlet pipe; 16, first diverter plate; 161, first diverter hole; 162, second dust suction hole; 163, collection tank; 164, connecting cavity; 165, regulating ring pipe; 166, regulating ring groove; 17, heat exchange tube; 171, first guide ring pipe; 172, connecting pipe; 173, guide pipe; 174, first equalizing flow Box; 175, second guide ring pipe; 176, second flow equalizing box; 18, second diverter plate; 181, second diverter hole; 19, sleeve; 190, rotating plate; 191, connecting ring plate; 192, connecting hole; 193, cavity; 194, roller; 195, fixing rod; 196, recovery pipe; 197, rotating shaft; 198, regulating motor; 199, negative pressure adsorption mechanism; 2, thionyl chloride catalyst; 3, lithium bromide unit; 4, chilled water system. DETAILED DESCRIPTION

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0038] Example 1

[0039] See also Figure 1 A system for comprehensive energy utilization of a thionyl chloride catalyst includes a thionyl chloride catalyst 2, a heat exchanger 10, a lithium bromide unit 3 for cooling pure water, and a chilled water system 4. The outlet of the thionyl chloride catalyst 2 is connected to the heat exchanger 10 via a pipeline, and the gas with a certain amount of heat at the outlet of the thionyl chloride catalyst 2 is directed into the heat exchanger 10. The heat exchanger 10 is provided with pure water that continuously passes through and is used to absorb the heat in the gas. The output end of the heat exchanger 10 is connected to the lithium bromide unit 3 via a pipeline, and the output end of the lithium bromide unit 3 is connected to the chilled water system 4.

[0040] See also Figure 2-6The heat exchanger includes a heat exchange tank 1, an air inlet pipe 15 for gas entry is provided at the bottom of the heat exchange tank 1, and an exhaust pipe 11 for gas discharge is provided at the upper end of the heat exchange tank 1, and a meandering guide mechanism is provided in the heat exchange tank 1 between the air inlet pipe 15 and the exhaust pipe 11 for pure water to pass through the heat exchange tank 1 and be heated by the gas, a water inlet pipe 13 for pure water to enter is provided at the upper end of the heat exchange tank 1, and the end of the water inlet pipe 13 is connected to the inlet of the upper end of the guide mechanism, a drain pipe 14 for pure water discharge is provided at the bottom of the heat exchange tank 1, and the outlet at the bottom of the guide mechanism is connected to the end of the drain pipe 14. The design of the guide mechanism, heat exchange tank 1, exhaust pipe 11, air inlet pipe 15, water inlet pipe 13 and drain pipe 14 enables the gas carrying heat to contact the guide mechanism when passing through the heat exchange tank 1, and transfer the heat to the guide mechanism through contact, while allowing pure water to pass through the inside of the guide mechanism. In this way, the pure water can absorb the heat absorbed by the guide mechanism in a timely manner and flow away with the pure water, thereby realizing heat exchange. The guide mechanism adopts a serpentine design, which can effectively increase the contact area between the gas and the guide mechanism, thereby improving the overall heat exchange efficiency.

[0041] See also Figure 4 The diversion mechanism includes a heat exchange grid box for converting a water flow into multiple water flows for dispersed flow and a diversion pipe 173 for mutual circulation between adjacent heat exchange grid boxes. The heat exchange grid box at the top is connected to the water inlet pipe 13, and the heat exchange grid box at the bottom is connected to the drain pipe 14. The heat exchange grid box includes a heat exchange pipe 17, a first diversion ring pipe 171, a second diversion ring pipe 175 and a connecting pipe 172. The first diversion ring pipe 171 There are two first flow guide rings 171, which are parallel to each other. A connecting pipe 172 is provided between the upper and lower adjacent first flow guide rings 171. The first flow guide rings 171 and the connecting pipe 172 form the external frame of the heat exchange network box. A second flow guide ring 175 is provided inside each of the first flow guide rings 171. A plurality of heat exchange tubes 17 are connected and evenly distributed radially between the first flow guide tube 173 and the second flow guide ring 175. The upper and lower second flow guide rings 175 are respectively connected to the corresponding flow guide tubes 173. The unique design of the heat exchange network box can convert one stream of pure water entering the heat exchange tank 1 into multiple streams of pure water flow, and ensure that the pure water moves from top to bottom. The design of the heat exchange network box and the flow guide pipe 173 can effectively increase the residence time of the pure water in the heat exchange tank 1, thereby improving the heating efficiency of the gas on the pure water and also improving the cooling effect of the pure water on the gas.

[0042] See also Figure 5-6The upper and lower ends of the heat exchange grid box are each provided with a first diverter plate 16 for airflow diversion, the first diverter plate 16 is fixedly connected to the inner wall of the heat exchange tank 1, and the center of the first diverter plate 16 is provided with a first diverter hole 161 for airflow to pass through. The heat exchange grid box located between adjacent first diverter plates 16 is each provided with a second diverter plate 18, the second diverter plate 18 is fixedly connected to the inner wall of the heat exchange tank 1, and a plurality of second diverter holes 181 for airflow to pass through are provided on the second diverter plate 18 close to the inner wall of the heat exchange tank 1. The design of the first diverter plate 16, the second diverter plate 18, the first diverter hole 161 and the second diverter hole 181 is coordinated with the heat exchange grid box so that when the gas passes through the first diverter plate 16, the airflow can only enter from the first diverter hole 161 in the middle, so that the airflow enters between the first diverter plate 16 and the second separation plate from the middle, and the second diverter hole 181 is set at the edge of the second diverter plate 18, so that the airflow diffuses along the bottom of the second diverter plate 18 to the outside, changing the flow direction of the airflow, and the heat exchange tube 17 is set on the first diverter plate 16 and the second diverter plate 18. In this way, when the airflow moves outward along the second diverter plate 18, it can fully contact the heat exchange tube 17. In this way, it can fully contact the heat exchange tube 17, which increases the residence time of the gas and thus improves the heat exchange efficiency. When the airflow moves upward through the second diverter hole 181, since there is only the first diverter hole 161 on the upper first diverter plate 16, the gas at the edge of the second diverter plate 18 can only move toward the upper first diverter hole 161. In this way, it is inevitable to contact the heat exchange tube 17 during the movement. In this way, the direction of the airflow is constantly changed, so that the airflow is always in contact with the guide mechanism during the flow process, which can effectively increase the residence time of the airflow in the heat exchange tank 1 and effectively improve the overall heat exchange efficiency.

[0043] See also Figure 2-6 In this embodiment, the first guide ring tube 171 and the connecting tube 172 are both arranged inside the inner wall of the heat exchange tank 1, which can achieve the concealment of the first guide ring tube 171 and the connecting tube 172. The airflow contacts the inner wall of the heat exchange tank 1, which will inevitably heat the inner wall of the heat exchange tank 1. The first guide ring tube 171 and the connecting tube 172 are arranged inside the inner wall of the heat exchange tank 1. In this way, the heat of the inner wall of the heat exchange tank 1 can be fully absorbed by the flow of pure water, thereby further improving the overall heat exchange efficiency.

[0044] See also Figure 3-4The heat exchange tank 1 is provided with a first flow equalizing box 174 and a second flow equalizing box 176. The bottom of the first flow equalizing box 174 is connected to the top flow guide pipe 173, and one end of the first flow equalizing box 174 is connected to the water inlet pipe 13. The second flow equalizing box 176 is located at the bottom of the heat exchange tank 1, one end of the second flow equalizing box 176 is connected to the bottom flow guide pipe 173, and the other end of the second flow equalizing pipe is connected to the drain pipe 14.

[0045] See also Figure 2-3 The bottom of the heat exchange tank 1 is provided with a plurality of support frames 12 for supporting.

[0046] When this embodiment is used:

[0047] (1) Connect the outlet gas phase of the thionyl chloride catalyst to the air inlet pipe 15 through a pipe, so that the gas enters the heat exchange tank 1. At the same time, connect the output end of the pure water to the water inlet pipe 13 through a pipe, and connect the extended end of the drain pipe 14 to the water inlet end of the lithium bromide unit, so that the pure water enters the heat exchange tank 1.

[0048] (2) After the gas enters the heat exchange tank 1, it moves toward the second diverter plate 18 of the upper layer through the first diverter hole 161 at the center of the first diverter plate 16 at the bottom. The airflow passes through the first diverter hole 161 and blows toward the second diverter plate 18. It moves along the inner wall of the second separation plate toward the second diverter hole 181 at the outer edge. After passing through the second diverter hole 181, the airflow moves toward the first diverter plate 16 of the upper layer. After contacting the corresponding first diverter plate 16, it moves toward the middle first diverter hole 161. This cycle is repeated, so that the gas moves upward over the corresponding first diverter plate 16 and second diverter plate 18 in the heat exchange tank 1, and is finally discharged through the exhaust pipe 11.

[0049] (3) After entering the heat exchange tank 1, the pure water moves downward in the opposite direction to the gas, with the air flow upward and the pure water downward, which can better heat the pure water and improve the heat exchange efficiency;

[0050] This embodiment uses a special heat exchanger, which will neither affect the gas composition at the catalyst outlet nor pollute the pure water. At the same time, it can effectively improve the heat exchange efficiency of pure water to gas, and can further improve the comprehensive energy utilization efficiency of the thionyl chloride catalyst.

[0051] Example 2

[0052] The same points as Example 1 are not described here. The differences from Example 1 are as follows:

[0053] See also Figure 7 、 Figure 8 、 Figure 10A rotatable rotating shaft 197 is provided at the center of the heat exchange tank 1, and the rotating shaft 197 passes through the centers of the corresponding first diverter plate 16 and the second diverter plate 18 respectively. A rotatable rotating plate 190 in the shape of a mosquito coil is provided on the upper and lower side walls of the second diverter plate 18. A fixedly connected and annular connecting ring plate 191 is provided at the center of the rotating plate 190. The inner side of the connecting ring plate 191 is fixedly connected to the corresponding rotating shaft 197, and a sliding cavity in the shape of a mosquito coil is formed between the rotating plates 190. A plurality of rollers 194 in sliding connection corresponding to the heat exchange tubes 17 are provided in the sliding cavity. The heat exchange tubes 17 are all provided with sleeves 19 in sliding connection for scraping impurities on the surface of the heat exchange tubes 17. A fixedly connected fixing rod 195 is provided on the sleeve 19, and the bottom of the fixing rod 195 is rotatably connected to the corresponding rollers 194.

[0054] The design of the sleeve 19 can scrape away dust and impurities on the surface of the heat exchange tube 17 by the back and forth movement of the sleeve 19 on the surface of the heat exchange tube 17, which can effectively prevent excessive accumulation of dust on the surface of the heat exchange tube 17, resulting in poor heat exchange efficiency, thereby effectively improving the overall heat exchange efficiency. The design of the rotating plate 190 is mosquito-repellent-repellent-repellent-repellent, and the combination of the roller 194 and the fixed rod 195 makes the rotating plate 190 rotate synchronously with the rotation of the rotating shaft 197. Since the heat exchange tube 17 is fixed, the sleeve 19, the fixed rod 195 and the roller 194 It cannot rotate synchronously with the rotation of the rotating plate 190, and the rotating plate 190 is designed to be like a mosquito coil, which will automatically move the roller 194 along the rotation trajectory of the rotating plate 190 gradually outward along the direction of the heat exchange tube 17, thereby realizing the synchronous outward movement of the sleeve 19, so that the sleeve 19 can move on the heat exchange tube 17, thereby scraping off impurities on the surface of the heat exchange tube 17. When the sleeve 19 needs to move back, the rotating shaft 197 is rotated in the opposite direction, so that the sleeve 19 can automatically move back synchronously with the heat exchange tube 17, thereby realizing the back and forth movement of the sleeve 19 on the surface of the heat exchange tube 17, so that the sleeve 19 can scrape the surface of the heat exchange tube 17 back and forth.

[0055] Furthermore, the upper end of the rotating shaft 197 is rotatably connected to the corresponding first flow equalizing box 174, and the bottom of the rotating shaft 197 is rotatably sealed to the bottom of the heat exchange tank 1. A fixedly connected regulating motor 198 is provided at the bottom of the heat exchange tank 1, and the output end of the regulating motor 198 is meshedly connected to the end of the rotating shaft 197 through a gear.

[0056] Example 3

[0057] The same points as Example 2 are not described here. The differences from Example 2 are as follows:

[0058] See also Figure 7-10, a cavity 193 in the shape of a mosquito coil is provided inside the rotating plate 190 above the second diverter plate 18, and a plurality of first dust suction holes are provided on one side of the rotating plate 190 for absorbing dust and impurities on the second diverter plate 18, the first dust suction hole is connected to the cavity 193, the rotating shaft 197 is a hollow tube body, and a connecting hole 192 is provided between the rotating shaft 197 and the end of the cavity 193, the connecting hole 192 is arranged in the connecting ring plate 191, and an adjusting ring groove 166 with a convex cross-section is provided on the inner side wall of the first diverter hole 161, and an adjusting ring pipe 165 that is matched and slidably connected is provided in the adjusting ring groove 166. A plurality of evenly distributed and radial collecting grooves 163 are provided in the first diverter plate 16 outside the adjusting ring groove 166, and a plurality of second dust suction holes 162 that are connected to the collecting grooves 163 and are used to absorb impurities on the upper surface of the first diverter plate 16 are provided on the upper surface of the first diverter plate 16. An open connecting cavity 164 is provided on the outer side of the adjusting ring tube 165 located on one side of the collecting tank 163, and the collecting tank 163 and the adjusting ring tube 165 are connected through the connecting cavity 164. A fixedly connected and connected recovery pipe 196 is provided on the rotating shaft 197 located on one side of the adjusting ring tube 165, and the extended end of the recovery pipe 196 is fixedly connected to the adjusting ring tube 165, and the recovery pipe 196 is connected to the adjusting ring tube 165, wherein the adjusting ring tube 165 and the adjusting ring groove 166 are slidably and sealedly connected, and a negative pressure adsorption mechanism 199 is provided at the bottom of the heat exchange tank 1 for performing negative pressure suction on the rotating shaft 197.

[0059] A cavity 193 and a first dust suction hole are provided on the rotating plate 190, so that when the rotating plate 190 rotates along with the rotating shaft 197, the negative pressure generated by the negative pressure adsorption mechanism 199 can adsorb dust and impurities on the upper surface of the second diverter plate 18 through the first dust suction hole, thereby realizing automatic dust removal of dust on the upper surface of the second diverter plate 18. Moreover, since the rotating plate 190 is rotating, the first dust suction hole can more comprehensively adsorb impurities on the surface of the second diverter plate 18, thereby improving the overall dust removal efficiency.

[0060] Furthermore, the negative pressure adsorption mechanism 199 includes a negative pressure adsorption box, the adsorption end of the negative pressure adsorption box is connected to the bottom of the rotating shaft 197, and the negative pressure adsorption box is provided with an adsorption mechanism for generating negative pressure. The adsorption machine can use any device on the market that can realize the negative pressure adsorption function. This device is widely used in current life, so this application does not describe it in detail.

[0061] Furthermore, the first diverter plate 16 is funnel-shaped, and the first diverter hole 161 is disposed at the bottom center of the first diverter plate 16 .

[0062] When this embodiment is used:

[0063] When there are too many dust and impurities on the first diverter plate 16 and the second diverter plate 18, when the adjusting motor 198 starts to drive the rotating shaft 197 to rotate, the negative pressure adsorption box is started, so that the negative pressure generated by the negative pressure adsorption box sucks the inside of the rotating shaft 197, so that the first dust suction hole sucks the impurities on the upper surface of the second diverter plate 18, and at the same time, the second dust suction hole 162 sucks the impurities on the surface of the first diverter plate 16, which can make the impurities and dust enter the negative pressure adsorption box through the rotating shaft 197, thereby realizing automatic dust removal inside the heat exchanger, and effectively preventing excessive dust inside the heat exchanger from causing poor air flow rate.

[0064] Example 4

[0065] Reference Figure 1 A method for comprehensive energy utilization of a thionyl chloride catalyst comprises the following steps:

[0066] S1: The gas phase at the outlet of the thionyl chloride catalyst is fed into the heat exchanger through the air inlet pipe, causing the gas with a certain amount of heat to move along a fixed channel in the heat exchanger. Pure water is also fed into the heat exchanger through the water inlet pipe. The pure water moves in the fixed channel in the heat exchanger in the opposite direction of the gas phase, and the gas phase at the outlet of the thionyl chloride catalyst exchanges heat with the pure water.

[0067] The outlet gas temperature of the thionyl chloride catalyst is controlled at 290-300°C, and the pure water temperature after heat exchange is 130-140°C;

[0068] S2: Pure water after heat exchange enters the lithium bromide unit;

[0069] Among them, pure water is 100m 3 / h enters the lithium bromide unit;

[0070] S3: The cooling water produced through heat exchange enters the chilled water system in the device area;

[0071] The cooling water temperature is 0-2℃

[0072] S4: According to daily electricity consumption statistics, each ton of thionyl chloride saves 20kWh of electricity.

[0073] Example 5

[0074] Reference Figure 1 A method for comprehensive energy utilization of a thionyl chloride catalyst comprises the following steps:

[0075] S1: The gas phase at the outlet of the thionyl chloride catalyst is fed into the heat exchanger through the air inlet pipe, causing the gas with a certain amount of heat to move along a fixed channel in the heat exchanger. Pure water is also fed into the heat exchanger through the water inlet pipe. The pure water moves in the fixed channel in the heat exchanger in the opposite direction of the gas phase, and the gas phase at the outlet of the thionyl chloride catalyst exchanges heat with the pure water.

[0076] The outlet gas temperature of the thionyl chloride catalyst is controlled at 220-230°C, and the pure water temperature after heat exchange is 90-100°C;

[0077] S2: Pure water after heat exchange enters the lithium bromide unit;

[0078] Among them, pure water is 100m 3 / h enters the lithium bromide unit;

[0079] S3: The cooling water produced through heat exchange enters the chilled water system in the device area;

[0080] The cooling water temperature is 0-2℃

[0081] S4: According to daily electricity consumption statistics, each ton of thionyl chloride saves 30kWh of electricity.

[0082] Example 6

[0083] Reference Figure 1 A method for comprehensive energy utilization of a thionyl chloride catalyst comprises the following steps:

[0084] S1: The gas phase at the outlet of the thionyl chloride catalyst is fed into the heat exchanger through the air inlet pipe, causing the gas with a certain amount of heat to move along a fixed channel in the heat exchanger. Pure water is also fed into the heat exchanger through the water inlet pipe. The pure water moves in the fixed channel in the heat exchanger in the opposite direction of the gas phase, and the gas phase at the outlet of the thionyl chloride catalyst exchanges heat with the pure water.

[0085] The outlet gas temperature of the thionyl chloride catalyst is controlled at 190-200°C, and the pure water temperature after heat exchange is 50-60°C;

[0086] S2: Pure water after heat exchange enters the lithium bromide unit;

[0087] Among them, pure water is 100m 3 / h enters the lithium bromide unit;

[0088] S3: The cooling water produced through heat exchange enters the chilled water system in the device area;

[0089] The cooling water temperature is 0-2℃

[0090] S4: According to daily electricity consumption statistics, each ton of thionyl chloride saves 15kWh of electricity.

[0091] Table 1 Different examples to obtain thionyl chloride to reduce consumption

[0092]

[0093] By exchanging heat with pure water at the outlet of the thionyl chloride catalyst and feeding the pure water into the lithium bromide unit to produce cooling water, the load of the chilled water system is reduced. According to daily power consumption statistics, Example 2 has the best effect, greatly reducing energy loss and basically achieving the maximum heat recycling effect.

[0094] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0095] In the present invention, unless otherwise expressly specified or limited, terms such as "disposed," "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; they may refer to mechanical connections, direct connections, or indirect connections through an intermediate medium; they may refer to internal communication between two elements or interaction between two elements. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0096] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by a person skilled in the art. The provision of power is also common knowledge in the art. The present invention is mainly used to protect mechanical devices, so the control method and circuit connection are not explained in detail in the present invention.

[0097] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A system for comprehensive energy utilization of thionyl chloride catalyst, characterized in that: The invention comprises a thionyl chloride catalyst (2), a heat exchanger (10), a lithium bromide unit (3) for cooling pure water, and a chilled water system (4), wherein the outlet of the thionyl chloride catalyst (2) is connected to the heat exchanger (10) through a pipeline, and the gas with a certain amount of heat at the outlet of the thionyl chloride catalyst (2) is directed into the heat exchanger (10), and the heat exchanger (10) is provided with pure water that continuously passes through and is used to absorb the heat in the gas, and the output end of the heat exchanger (10) is connected to the lithium bromide unit (3) through a pipeline, and the output end of the lithium bromide unit (3) is connected to the chilled water system (4); The diversion mechanism includes a heat exchange grid box for converting a water flow into a plurality of dispersed water flows and a diversion pipe (173) for mutual circulation between adjacent heat exchange grid boxes, wherein the heat exchange grid box at the top is connected to the water inlet pipe (13), and the heat exchange grid box at the bottom is connected to the drain pipe (14); The heat exchange grid box comprises a heat exchange tube (17), a first flow guide ring tube (171), a second flow guide ring tube (175) and a connecting tube (172), wherein there are two first flow guide ring tubes (171), the first flow guide ring tubes (171) are parallel to each other, and a connecting tube (172) is provided between the upper and lower adjacent first flow guide ring tubes (171), and the first flow guide ring tubes (171) and the connecting tube (172) constitute an external frame of the heat exchange grid box, and a second flow guide ring tube (175) is provided inside each of the first flow guide ring tubes (171), and a plurality of heat exchange tubes (17) that are connected and evenly distributed in a radial shape are provided between the first flow guide tube (173) and the second flow guide ring tube (175), and the upper and lower second flow guide ring tubes (175) are respectively connected to the corresponding flow guide tubes (173); The heat exchange grid box is provided with a first diverter plate (16) for airflow diversion at both upper and lower ends, the first diverter plate (16) is fixedly connected to the inner wall of the heat exchange tank (1), and a first diverter hole (161) for airflow to pass through is provided at the center of the first diverter plate (16), and a second diverter plate (18) is provided inside the heat exchange grid box between adjacent first diverter plates (16), the second diverter plate (18) is fixedly connected to the inner wall of the heat exchange tank (1), and a plurality of second diverter holes (181) for airflow to pass through are provided on the second diverter plate (18) on the side close to the inner wall of the heat exchange tank (1); The center of the heat exchange tank (1) is provided with a rotatable rotating shaft (197), and the rotating shaft (197) passes through the center of the corresponding first diverter plate (16) and the second diverter plate (18), respectively. The upper and lower side walls of the second diverter plate (18) are provided with a rotating plate (190) that is rotatably connected and has a mosquito coil shape. The center of the rotating plate (190) is provided with a fixedly connected and annular connecting ring plate (191), and the inner side of the connecting ring plate (191) is connected to the corresponding rotating shaft (197). ) are fixedly connected, and a sliding cavity in the shape of a mosquito coil is formed between the rotating plates (190), and a plurality of rollers (194) that are slidably connected and correspond to the heat exchange tubes (17) are provided in the sliding cavity. The heat exchange tubes (17) are all provided with sleeves (19) that are slidably connected and used to scrape impurities from the surface of the heat exchange tubes (17). The sleeves (19) are provided with fixed rods (195) that are fixedly connected, and the bottoms of the fixed rods (195) are rotatably connected to the corresponding rollers (194).

2. The system for comprehensive energy utilization of a thionyl chloride catalyst according to claim 1, characterized in that: The heat exchanger comprises a heat exchange tank (1), wherein an air inlet pipe (15) for gas to enter is provided at the bottom of the heat exchange tank (1), and an exhaust pipe (11) for gas to be discharged is provided at the upper end of the heat exchange tank (1), and a guide mechanism is provided in the heat exchange tank (1) between the air inlet pipe (15) and the exhaust pipe (11), and is used for pure water to pass through the heat exchange tank (1) and be heated by the gas. A water inlet pipe (13) for pure water to enter is provided at the upper end of the heat exchange tank (1), and the end of the water inlet pipe (13) is communicated with the inlet at the upper end of the guide mechanism. A drain pipe (14) for pure water to be discharged is provided at the bottom of the heat exchange tank (1), and the outlet at the bottom of the guide mechanism is communicated with the end of the drain pipe (14).

3. The system for comprehensive energy utilization of thionyl chloride catalyst according to claim 1, characterized in that: A first flow equalizing box (174) and a second flow equalizing box (176) are provided in the heat exchange tank (1), wherein the bottom of the first flow equalizing box (174) is connected to the uppermost flow guide pipe (173), and one end of the first flow equalizing box (174) is connected to the water inlet pipe (13); the second flow equalizing box (176) is located at the bottom of the heat exchange tank (1), one end of the second flow equalizing box (176) is connected to the lowermost flow guide pipe (173), and the other end of the second flow equalizing pipe is connected to the drain pipe (14).

4. A method for comprehensive energy utilization of a thionyl chloride catalyst according to any one of claims 1 to 3, characterized in that: The following steps are involved: S1: The outlet gas phase of the thionyl chloride catalyst (1) is sent into the heat exchanger (10) through the air inlet pipe (15), so that the gas with a certain amount of heat moves along the fixed channel in the heat exchanger, and pure water is allowed to enter the heat exchanger through the water inlet pipe (13). The pure water moves in the fixed channel in the heat exchanger (10) in the opposite direction of the gas, and the outlet gas phase of the thionyl chloride catalyst (1) exchanges heat with the pure water; S2: The pure water after heat exchange enters the lithium bromide unit (3), and the lithium bromide unit (3) is used to cool the pure water; S3: The cooling water produced by heat exchange enters the chilled water system (4) of the device area, thereby replenishing the cooling water in the chilled water system (4) in a timely manner.

5. The method for comprehensive energy utilization of a thionyl chloride catalyst according to claim 4, wherein: The temperature of the gas phase at the outlet of the catalyst in S1 is controlled at 220-230°C.

6. The method for comprehensive energy utilization of a thionyl chloride catalyst according to claim 4, wherein: The temperature of the pure water after the heat exchange in S1 is 90-100°C.

7. The method for comprehensive energy utilization of a thionyl chloride catalyst according to claim 4, characterized in that: The S2 pure water is 100m 3 / h enters the lithium bromide unit.

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