A two-in-one hydrogen chloride graphite synthesis furnace

Abstract

The utility model relates to a two-in-one hydrogen chloride graphite synthetic furnace, including furnace body, furnace cover, furnace seat, its technical key point is: the first graphite heat exchange column is established in the furnace body, the second graphite heat exchange column is established in the furnace cover, the third graphite heat exchange column is established in the furnace seat. The utility model increases the second water collector, if necessary, can supplement the cooling medium to the second water collector through the second cold supplement pipeline, and the cooling medium of third outlet is converged and is input first inlet, is used for the heat exchange demand of first graphite heat exchange column, similarly, the utility model increases the first water collector, if necessary, can supplement the cooling medium to the first water collector through the first cold supplement pipeline, and the cooling medium of first outlet is converged and is input second inlet, is used for the heat exchange demand of second graphite heat exchange column and conical graphite heat exchange block. The utility model through above -mentioned means is favorable to the temperature required for flexible adjustment synthesis section and graphite heat exchange section.

Description

Technical Field

[0001] This utility model relates to the technical field of hydrogen chloride production equipment, specifically to a two-in-one hydrogen chloride graphite synthesis furnace. Background Technology

[0002] Currently, the hydrogen chloride gas Fe produced using a two-in-one hydrogen chloride graphite synthesis furnace is... 2+ Fe 3+ With a low content, it can meet the production requirements of high-purity hydrochloric acid and high-quality polyvinyl chloride resin products, and is therefore widely used. During operation, chlorine and hydrogen enter from the bottom of the furnace, mix and burn through the lamp head to obtain hydrogen chloride gas, which then passes through the synthesis section and graphite heat exchange section to reach the top of the furnace, and finally exits from the hydrogen chloride gas outlet.

[0003] For example, CN 219689335 U discloses a novel combined two-in-one hydrogen chloride synthesis furnace, which includes an outer furnace and an inner furnace, with a flow cavity between the two furnaces. The bottom of the outer furnace is equipped with a first hydrogen inlet pipe, a second hydrogen inlet pipe, and a chlorine inlet pipe, all of which are connected to the inner furnace. When cooling water enters the flow cavity through the cooling water inlet pipe, it flows within the flow cavity and through multiple diverging holes at the bottom and top of the inner furnace, before being discharged through the cooling water drain pipe. As the cooling water flows, it carries away the high temperature of the inner furnace, cooling it and preventing the furnace bottom from bursting. However, the following problems still exist: the cooling water flows from the bottom to the top of the flow cavity, resulting in a long flow path, poor temperature regulation capability, and difficulty in flexibly adjusting the required temperature of the graphite heat exchange section. Utility Model Content

[0004] The purpose of this invention is to provide a two-in-one hydrogen chloride graphite synthesis furnace with a reasonable structure and reliable operation that solves the above problems, and which is conducive to flexibly adjusting the required temperature of the graphite heat exchange section.

[0005] The technical solution of this utility model is:

[0006] A two-in-one graphite synthesis furnace for hydrogen chloride includes a furnace body, a furnace cover fixed to the upper part of the furnace body, and a furnace base fixed to the lower part of the furnace body. The key technical features are: a first graphite heat exchange column is provided in the furnace body; a second graphite heat exchange column is provided in the furnace cover; and a third graphite heat exchange column is provided in the furnace base. The first graphite heat exchange column has multiple rows of horizontal water channels arranged at intervals from top to bottom. On both sides of the first graphite heat exchange column are built-in water distribution channels and water collection channels communicating with both ends of each horizontal water channel. The bottom side of the water distribution channels... The system includes a first inlet leading out of the furnace body, and a first outlet leading out of the furnace body located on the top side of the water collection channel. The first graphite heat exchange column also includes a group of longitudinal ventilation channels arranged intersecting with the horizontal water channel. A conical graphite heat exchange block is sandwiched between the top surface of a conical groove in the middle of the bottom surface of the second graphite heat exchange column and the top surface of the first graphite heat exchange column. A right-angle air guide pipe, connected to the upper end of the conical graphite heat exchange block, is built into the upper part of the second graphite heat exchange column. The conical graphite heat exchange block contains a connection between the longitudinal ventilation channel group and the right-angle air guide pipe. The furnace includes a flow guide hole assembly, with the end of the right-angled gas guide pipe leading out of the furnace cover. The second graphite heat exchange column also includes a first cooling water chamber surrounding the conical graphite heat exchange block and the right-angled gas guide pipe. The lower side of the first cooling water chamber has a second inlet communicating with the first outlet, and the upper side of the first cooling water chamber has a second outlet. The second inlet and the first outlet are connected by a first water collector, which also has a first make-up cooling pipe. The third graphite heat exchange column has a central through-hole in its middle, supporting a lamp holder within the through-hole. The bottom of the furnace base has a chlorine gas inlet pipe corresponding to the central through-hole. The side of the furnace base has a hydrogen gas inlet pipe inserted into the third graphite heat exchange column and communicating with the central through-hole. The third graphite heat exchange column also includes a second cooling water chamber surrounding the central through-hole and the space above it. The upper side of the second cooling water chamber has a third outlet communicating with the first inlet, and the lower side of the second cooling water chamber has a third inlet. The third outlet and the first inlet are connected by a second water collector, which also has a second make-up cooling pipe.

[0007] In the aforementioned two-in-one graphite synthesis furnace for hydrogen chloride, the furnace body and furnace cover are connected by an upper flange assembly, the opposite end face edges of the first graphite heat exchange column and the second graphite heat exchange column are connected by a first concave-convex structure, the furnace body and furnace base are connected by a lower flange assembly, and the opposite end face edges of the first graphite heat exchange column and the third graphite heat exchange column are connected by a second concave-convex structure.

[0008] The aforementioned two-in-one hydrogen chloride graphite synthesis furnace has an acid discharge port at the bottom of the furnace base that communicates with the central through hole. The outer end of the right-angle gas guide pipe is connected to a condenser. The condenser has multiple upper baffles and multiple lower baffles arranged alternately to form a serpentine channel. The condenser is connected to a gas transmission pipe at the end of the serpentine channel. The bottom of the condenser has a liquid collection port.

[0009] The beneficial effects of this utility model are:

[0010] The first, second, and third graphite heat exchange columns ensure production safety and regulate production temperature. During normal operation, due to the long cooling path, this invention includes a second water collector. When needed, cooling medium can be supplied to the second water collector through a second cooling supply pipe, merging with the cooling medium discharged from the third outlet and entering the first inlet to meet the heat exchange needs of the first graphite heat exchange column. Similarly, this invention includes a first water collector. When needed, cooling medium can be supplied to the first water collector through a first cooling supply pipe, merging with the cooling medium discharged from the first outlet and entering the second inlet to meet the heat exchange needs of the second graphite heat exchange column and the conical graphite heat exchange block. This invention, through the above methods, facilitates flexible adjustment of the required temperatures in the synthesis section and the graphite heat exchange section. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 yes Figure 1 Enlarged view of section A.

[0013] In the diagram: 1. Furnace cover, 2. Second outlet, 3. Second graphite heat exchange column, 4. First cooling water chamber, 5. Upper flange assembly, 6. Furnace body, 7. First graphite heat exchange column, 8. Water distribution channel, 9. Second water collector, 10. Second make-up cooling pipe; 11. First inlet, 12. Lower flange assembly, 13. Third outlet, 14. Furnace base, 15. Second cooling water chamber, 16. Third graphite heat exchange column, 17. Chlorine gas inlet pipe, 18. 19. Hydrogen inlet pipe; 20. Third inlet; 21. Lamp holder; 22. Water collection channel; 23. Horizontal water passage; 24. Longitudinal ventilation channel group; 25. First outlet; 26. First water collector; 27. First cooling pipeline; 28. Second inlet; 29. ​​Liquid collection port; 30. Upper baffle; 31. Lower baffle; 32. Condenser; 33. Right-angle gas guide pipe; 34. Gas transmission pipeline; 35. Conical graphite heat exchange block; 36. Flow guide hole group. Detailed Implementation

[0014] The present invention will be described in detail with reference to the accompanying drawings.

[0015] like Figure 1 , Figure 2 As shown, the two-in-one hydrogen chloride graphite synthesis furnace includes a furnace body 6, a furnace cover 1 fixed to the upper part of the furnace body 6, and a furnace base 14 fixed to the lower part of the furnace body 6.

[0016] The furnace body 6 is provided with a first graphite heat exchange column 7, the furnace cover 1 is provided with a second graphite heat exchange column 3, and the furnace base 14 is provided with a third graphite heat exchange column 16. The first graphite heat exchange column 7 is provided with multiple rows of horizontal water channels 22 arranged at intervals from top to bottom. The first graphite heat exchange column 7 has a branch water channel 8 and a collection water channel 21 on both sides, which are connected to the two ends of each horizontal water channel 22. The bottom side of the branch water channel 8 is provided with a first inlet 11 leading out of the furnace body 6, and the top side of the collection water channel 21 is provided with a first outlet 24 leading out of the furnace body 6. The first graphite heat exchange column 7 is also provided with a longitudinal ventilation channel group 23 arranged alternately with the horizontal water channels 22.

[0017] The second graphite heat exchange column 3 has a conical groove at the center of its bottom surface, and a conical graphite heat exchange block 34 is sandwiched between the top surface of the conical groove and the top surface of the first graphite heat exchange column 7. A right-angled air guide pipe 32, connected to the upper end of the conical graphite heat exchange block 34, is built into the upper part of the second graphite heat exchange column 3. The conical graphite heat exchange block 34 has a guide hole group 35 connecting the longitudinal ventilation channel group 23 and the right-angled air guide pipe 32. The end of the right-angled air guide pipe 32 leads out of the furnace cover 1. The second graphite heat exchange column 3 also has a first cooling water chamber 4 surrounding the conical graphite heat exchange block 34 and the right-angled air guide pipe 32. The lower side of the first cooling water chamber 4 has a second inlet 27 communicating with the first outlet 24, and the upper side of the first cooling water chamber 4 has a second outlet 2. The second inlet 27 and the first outlet 24 are connected by a first water collector 25, which also has a first cooling replenishment pipe 26.

[0018] The third graphite heat exchange column 16 has a central through hole in its middle, through which a lamp holder 20 is supported. The bottom of the furnace base 14 has a chlorine gas inlet pipe 17 corresponding to the central through hole. The side of the furnace base 14 has a hydrogen gas inlet pipe 18 that is inserted into the third graphite heat exchange column 16 and communicates with the central through hole. The third graphite heat exchange column 16 also has a second cooling water chamber 15 surrounding the central through hole and the space above it. The upper side of the second cooling water chamber 15 has a third outlet 13 that communicates with the first inlet 11, and the lower side of the second cooling water chamber 15 has a third inlet 19. The third outlet 13 and the first inlet 11 are connected by a second water collector 9, which also has a second cooling replenishment pipe 10.

[0019] In this embodiment, the furnace body 6 and the furnace cover 1 are connected by an upper flange assembly 5. The opposite end edges of the first graphite heat exchange column 7 and the second graphite heat exchange column 2 are connected by a first concave-convex structure. The furnace body 6 and the furnace base 14 are connected by a lower flange assembly 12. The opposite end edges of the first graphite heat exchange column 7 and the third graphite heat exchange column 16 are connected by a second concave-convex structure. The bottom of the furnace base 14 is provided with an acid discharge port communicating with the central through hole. The outer end of the right-angle gas guide pipe 32 is connected to a condenser 31. The condenser 31 is provided with multiple upper baffles 29 and multiple lower baffles 30. The upper baffles 29 and multiple lower baffles 30 are arranged alternately to form a serpentine channel. The end of the condenser 31 corresponding to the serpentine channel is connected to a gas transmission pipe 33. The bottom of the condenser 31 is provided with a liquid collection port 28.

[0020] Working principle:

[0021] 1. Raw material gases chlorine and hydrogen are introduced through chlorine inlet pipe 17 and hydrogen inlet pipe 19. The lamp head 20 is ignited, and the chlorine and hydrogen mix and burn at the lamp head to obtain hydrogen chloride gas. The hydrogen chloride gas rises to the longitudinal ventilation channel group 23 arranged in the first graphite heat exchange column 7, rises through the longitudinal ventilation channel group 23 to the guide hole group 35, and is then transported by the guide hole group 35 to the right-angle guide pipe 32. Then it is discharged to the condenser 31 through the right-angle guide pipe 32, and after passing through the serpentine channel, it is sent to the gas delivery pipeline 33, and then sent to the target location by the gas delivery pipeline 33. The condensed acid liquid at the bottom of the condenser 31 is discharged to the collection tank through each liquid collection port 28 (omitted in the figure).

[0022] 2. A synthesis chamber is formed between the first graphite heat exchange column 7 and the third graphite heat exchange column 16. The synthesis chamber not only serves as a combustion chamber but also collects condensed acid. The condensed acid is discharged into the collection tank through the acid discharge port, which is blocked in the figure.

[0023] 3. When it is necessary to adjust the heat exchange temperature of the first graphite heat exchange column 7, cooling medium can be supplied to the second water collector 9 through the second cooling supply pipe 10, and the cooling medium discharged from the third outlet 13 can be combined and input into the first inlet 11; when it is necessary to adjust the heat exchange temperature of the second graphite heat exchange column 2 and the conical graphite heat exchange block 34, cooling medium can be supplied to the first water collector 25 through the first cooling supply pipe 26, and the cooling medium discharged from the first outlet 24 can be combined and input into the second inlet 27.

[0024] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made within the scope of this utility model should still fall within the scope of this utility model.

Claims

1. A two-in-one hydrogen chloride graphite synthesis furnace, comprising a furnace body, a furnace cover fixed to the upper part of the furnace body, and a furnace base fixed to the lower part of the furnace body, characterized in that: The furnace body contains a first graphite heat exchange column, the furnace cover contains a second graphite heat exchange column, and the furnace base contains a third graphite heat exchange column. The first graphite heat exchange column has multiple rows of horizontal water channels arranged at intervals from top to bottom. On both sides of the first graphite heat exchange column are built-in branch channels and converging channels that communicate with both ends of each horizontal water channel. The bottom side of the branch channels has a first inlet leading out of the furnace body, and the top side of the converging channels has a first outlet leading out of the furnace body. A graphite heat exchange column is further provided with a longitudinal ventilation channel group arranged intersecting with the horizontal water channel; a conical groove is provided in the middle of the bottom surface of the second graphite heat exchange column, and a conical graphite heat exchange block is sandwiched between the top surface of the conical groove and the top surface of the first graphite heat exchange column; a right-angle air guide pipe connected to the upper end of the conical graphite heat exchange block is built into the upper part of the second graphite heat exchange column; the conical graphite heat exchange block is provided with a guide hole group connecting the longitudinal ventilation channel group and the right-angle air guide pipe; the end of the right-angle air guide pipe leads out of the furnace cover. The graphite heat exchange column is further provided with a first cooling water chamber surrounding a conical graphite heat exchange block and a right-angled gas guide pipe. The lower side of the first cooling water chamber is provided with a second inlet communicating with a first outlet, and the upper side of the first cooling water chamber is provided with a second outlet. The second inlet and the first outlet are connected by a first water collector, and the first water collector is also provided with a first make-up cooling pipe. The third graphite heat exchange column is provided with a central through hole in the middle, and a lamp holder is supported in the central through hole. The bottom of the furnace base is provided with a chlorine gas inlet pipe corresponding to the central through hole. The side of the furnace base is provided with a hydrogen gas inlet pipe inserted into the third graphite heat exchange column and communicating with the central through hole. The third graphite heat exchange column is further provided with a second cooling water chamber surrounding the central through hole and the space above it. The upper side of the second cooling water chamber is provided with a third outlet communicating with a first inlet, and the lower side of the second cooling water chamber is provided with a third inlet. The third outlet and the first inlet are connected by a second water collector, and the second water collector is also provided with a second make-up cooling pipe.

2. The two-in-one hydrogen chloride graphite synthesis furnace according to claim 1, characterized in that: The furnace body and furnace cover are connected by an upper flange assembly. The opposite end face edges of the first graphite heat exchange column and the second graphite heat exchange column are connected by a first concave-convex structure. The furnace body and furnace base are connected by a lower flange assembly. The opposite end face edges of the first graphite heat exchange column and the third graphite heat exchange column are connected by a second concave-convex structure.

3. The two-in-one hydrogen chloride graphite synthesis furnace according to claim 1, characterized in that: The bottom of the furnace base is provided with an acid discharge port that communicates with the central through hole. The outer end of the right-angle gas guide pipe is connected to a condenser. The condenser is provided with multiple upper baffles and multiple lower baffles. The upper baffles and multiple lower baffles are arranged alternately to form a serpentine channel. The condenser is connected to a gas transmission pipe at the end of the serpentine channel. The bottom of the condenser is provided with a liquid collection port.

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