Cooling device for inhibiting scaling of two-in-one graphite synthesis furnace

Abstract

The utility model discloses a two-in-one graphite synthesis furnace scaling inhibiting cooling device, and particularly relates to the technical field of cooling, the two-in-one graphite synthesis furnace scaling inhibiting cooling device comprises a two-in-one graphite synthesis furnace, a spiral cooling pipe is buried in the cylindrical side wall of the two-in-one graphite synthesis furnace, and the bottom of the spiral cooling pipe extends out of the side wall of the two-in-one graphite synthesis furnace to be communicated with a heat exchanger; the heat exchanger is provided with a plurality of vertical through grooves, the heat exchanger is slidably provided with a scraper attached to the outer surface of the heat exchanger, the bottom of the scraper is in threaded connection with a screw, the heat exchanger and the scraper are jointly sleeved with a heat exchange box, a driving motor is fixedly installed on the outer wall of the heat exchange box, and the output end of the driving motor is coaxially and fixedly connected with the screw. The top of the spiral cooling pipe communicates with a pure water tank, a branch water pipe at the bottom of the pure water tank communicates with the water return pipe, a piston is slidably installed in an inner cavity of the pure water tank, a through hole is formed in the top of the pure water tank, and the heat exchange efficiency can be kept stable for a long time.

Description

Technical Field

[0001] This utility model belongs to the field of cooling technology, specifically relating to a cooling device for inhibiting scaling in a two-in-one graphite synthesis furnace. Background Technology

[0002] Currently, hydrogen chloride gas production mainly utilizes a two-in-one steam-type graphite synthesis furnace. During normal production, the operation and control of this furnace are crucial. The core of this process lies in controlling the chlorine-hydrogen ratio, primarily achieved by precisely adjusting the amounts of chlorine and hydrogen entering the furnace. Detailed regulation of the chlorine and hydrogen inlet flow rates ensures a suitable ratio, thereby guaranteeing efficient hydrogen chloride gas synthesis.

[0003] The two-in-one graphite synthesis furnace generates a large amount of heat during operation. To maintain a stable operating temperature, circulating water is used for heat exchange and cooling. The circulating water continuously flows through the furnace's cooling system, carrying away heat and providing effective cooling. However, this circulating water cooling method carries certain risks. The circulating water may contain numerous impurities, which flow continuously within the system. Over extended periods of operation, these impurities gradually accumulate and adhere to the heat exchange components inside the furnace. This accumulation is gradual; initially, the impact may be minor, but over time, it can clog the heat exchange channels, reducing heat exchange efficiency. In severe cases, it can cause even more serious damage to the furnace, leading to significant economic losses and the risk of production interruption.

[0004] Therefore, a new type of cooling device for inhibiting scaling in a two-in-one graphite synthesis furnace is needed. Utility Model Content

[0005] To address the aforementioned problems, this utility model discloses a cooling device for inhibiting scaling in a two-in-one graphite synthesis furnace.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A cooling device for inhibiting scaling in a two-in-one graphite synthesis furnace includes the two-in-one graphite synthesis furnace. A spiral cooling pipe is embedded in the cylindrical side wall of the two-in-one graphite synthesis furnace. The bottom of the spiral cooling pipe extends out of the side wall of the two-in-one graphite synthesis furnace and connects to a heat exchanger. The heat exchanger is provided with several vertical through slots. A scraper that fits against the outer surface of the heat exchanger is slidably installed on the heat exchanger and is adapted to the through slots of the heat exchanger. A screw is threaded to the bottom of the scraper. The heat exchanger and the scraper are encased in a heat exchange box. A drive motor is fixedly installed on the outer wall of the heat exchange box, and the output end of the drive motor is coaxially fixedly connected to the screw. A return water pipe is connected to the other end of the heat exchange box. A pure water tank is connected to the top of the spiral cooling pipe. A water pump is provided at the bottom of the pure water tank on the side connected to the spiral cooling pipe. A branch water pipe at the bottom of the pure water tank is connected to the return water pipe. A piston is slidably installed in the inner cavity of the pure water tank, and a through hole is opened at the top of the pure water tank.

[0008] As a preferred embodiment of this utility model, the heat exchange box is provided with a horizontal branch pipe at the bottom and a vertical branch pipe at the top.

[0009] As a preferred embodiment of this utility model, the bottom of the heat exchange box is funnel-shaped, and a slag discharge valve is provided at the bottom outlet of the funnel shape.

[0010] As a preferred technical solution of this utility model, the inner cavity of the pure water tank is provided with a limiting ring, and the limiting ring is located above the branch water pipe and the water pump entering the inner cavity of the pure water tank.

[0011] As a preferred embodiment of this invention, the bottom of the pure water tank is provided with a replenishment valve for connecting a pure water pipeline.

[0012] As a preferred embodiment of this utility model, the side wall of the pure water tank is provided with a vertical transparent observation window.

[0013] As a preferred embodiment of this utility model, bearings are respectively fitted at both ends of the screw, and both bearings are fixedly embedded in the side wall of the pure water tank.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. This application is equipped with a pure water circulation pipeline and an external circulation water pipeline that work together. The pure water circulation pipeline is not prone to scaling. However, the cooling water in the external circulation water pipeline is prone to scaling on the outer wall of the heat exchanger, which affects the heat exchange efficiency of the heat exchanger. Therefore, a scraper adapted to the outer surface of the heat exchanger is provided. The scraper is activated periodically to scrape off the scale on the outer wall of the heat exchanger. The scale that is scraped off settles at the bottom of the heat exchange box and can be discharged periodically by opening the slag discharge valve, so that the heat exchange efficiency of this application can remain stable for a long time.

[0016] Second, the pure water tank of this application is equipped with a piston, which moves with the change of pure water volume, thereby maintaining the pressure in the pure water circulation pipeline within a certain range and reducing the probability of excessive pressure in the pure water circulation pipeline. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure of the two-in-one graphite synthesis furnace from another angle, according to another embodiment of this utility model.

[0019] Figure 3 This is a cross-sectional view of the heat exchanger, heat exchange box, scraper, screw, drive motor, and bearing according to an embodiment of the present utility model;

[0020] Figure 4 This is a cross-sectional view of the pure water tank, water pump, and piston according to an embodiment of the present invention.

[0021] List of identifiers in attached diagrams:

[0022] 1. Two-in-one graphite synthesis furnace; 2. Spiral cooling tube; 3. Heat exchanger;

[0023] 4. Heat exchanger box; 401. Horizontal branch pipe; 402. Vertical branch pipe; 403. Slag discharge valve;

[0024] 5. Scraper; 6. Screw; 7. Drive motor; 8. Bearing; 9. Return water pipe;

[0025] 10. Pure water tank; 101. Limiting ring; 102. Branch water pipe; 103. Make-up valve;

[0026] 11. Water pump; 12. Piston. Detailed Implementation

[0027] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0028] Please see Figure 1-4A cooling device for inhibiting scaling in a two-in-one graphite synthesis furnace includes a two-in-one graphite synthesis furnace 1, with a spiral cooling pipe 2 embedded in the cylindrical sidewall of the furnace 1. The production of hydrogen chloride gas primarily utilizes this two-in-one steam-type graphite synthesis furnace (two-in-one graphite synthesis furnace 1). During operation, the furnace 1 generates a large amount of heat; to maintain a stable operating temperature, circulating water is used for heat exchange and cooling. The bottom of the spiral cooling pipe 2 extends out from the sidewall of the furnace 1 and connects to a heat exchanger 3. The heat exchanger 3 has several vertical slots, and scrapers 5 are slidably mounted on its outer surface, fitting the slots of the heat exchanger 3. A screw 6 is threadedly connected to the bottom of the scraper 5. A heat exchange box 4 is fitted over both the heat exchanger 3 and the scraper 5. A drive motor 7 is fixedly mounted on the outer wall of the heat exchange box 4, and the output end of the drive motor 7 is coaxially and fixedly connected to the screw 6. The other end of the heat exchange box 4 is connected to the return water pipe 9, the top of the spiral cooling pipe 2 is connected to the pure water tank 10, and a water pump 11 is installed at the bottom of the side of the pure water tank 10 connected to the spiral cooling pipe 2. The branch water pipe 102 at the bottom of the pure water tank 10 is connected to the return water pipe 9, a piston 12 is slidably installed in the inner cavity of the pure water tank 10, and a through hole is opened at the top of the pure water tank 10.

[0029] The spiral cooling pipe 2, heat exchanger 3, return water pipe 9, pure water tank 10, and water pump 11 constitute a pure water circulation pipeline, and the pure water is not prone to scaling in this pipeline. The area below piston 12 in the inner cavity of the pure water tank 10 is filled with pure water.

[0030] A horizontal branch pipe 401 is installed at the bottom of the heat exchange box 4, and a vertical branch pipe 402 is installed at the top of the heat exchange box 4. The horizontal branch pipe 401 and the vertical branch pipe 402 are respectively connected to the two ends of an external circulating water pipeline, which are used to exchange heat and cool the heat exchanger 3 inside the heat exchange box 4. The bottom of the heat exchange box 4 is funnel-shaped, and a slag discharge valve 403 is installed at the bottom outlet of the funnel-shaped bottom. The slag discharge valve 403 can be opened periodically to discharge the residue accumulated at the bottom of the heat exchange box 4.

[0031] The inner cavity of the pure water tank 10 is equipped with a limit ring 101, which is positioned above the point where the branch pipe 102 and the water pump 11 enter the inner cavity of the pure water tank 10, ensuring that the piston 12 does not block the connection between the branch pipe 102 and the water pump 11 and the inner cavity of the pure water tank 10. A replenishment valve 103 for connecting to a pure water pipeline is located at the bottom of the pure water tank 10. Since a small amount of pure water is consumed during long-term circulation, the replenishment valve 103 can be opened to inject a certain amount of pure water when the amount of pure water in the inner cavity of the pure water tank 10 is too low. A vertical transparent observation window is provided on the side wall of the pure water tank 10 for observing the height of the piston 12.

[0032] Bearings 8 are respectively fitted at both ends of the screw 6, and both bearings 8 are fixedly embedded in the side wall of the pure water tank 10.

[0033] Working principle:

[0034] During operation, the horizontal branch pipe 401 and the vertical branch pipe 402 are respectively connected to the two ends of the external circulating water pipeline. When the external cooling water flows through the heat exchange box 4, it flows along the through groove of the heat exchanger 3 so as to fully exchange heat and cool down the heat exchanger 3. The water pump 11 draws the pure water in the pure water tank 10 into the spiral cooling pipe 2. The spiral cooling pipe 2 cools down the two-in-one graphite synthesis furnace 1. Then the heated pure water flows into the heat exchanger 3. The heated pure water in the heat exchanger 3 exchanges heat with the cooling water flowing through the heat exchange box 4 and cools down. The cooled pure water flows back into the pure water tank 10 through the return water pipe 9.

[0035] Since the cooling water flowing into the heat exchange box 4 is not pure water, it is easy for scale to form on the outer wall of the heat exchanger 3, which affects the heat exchange efficiency of the heat exchanger 3. Therefore, during use, the drive motor 7 is started periodically to drive the screw 6 to rotate. The screw 6 drives the scraper 5 to move back and forth to scrape off the scale on the outer wall of the heat exchanger 3. The scraped scale settles at the bottom of the heat exchange box 4, and the residue (scale) can be discharged periodically by opening the slag discharge valve 403.

[0036] During the circulation of pure water, some of the pure water in the pipeline will expand in volume due to heat. The piston 12 inside the pure water tank 10 will move with the change in the volume of pure water, thereby maintaining the pressure in the pure water circulation pipeline within a certain range.

[0037] It should be noted that the above content merely illustrates the technical concept of this utility model and cannot be used to limit the scope of protection of this utility model. For those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and all such improvements and modifications fall within the scope of protection of the claims of this utility model.

Claims

1. A cooling device for inhibiting scaling in a two-in-one graphite synthesis furnace, comprising a two-in-one graphite synthesis furnace (1), characterized in that, The cylindrical sidewall of the two-in-one graphite synthesis furnace (1) is embedded with a spiral cooling pipe (2). The bottom of the spiral cooling pipe (2) extends out of the sidewall of the two-in-one graphite synthesis furnace (1) and connects to a heat exchanger (3). The heat exchanger (3) is provided with several vertical through slots. A scraper (5) is slidably installed on the heat exchanger (3) and fits its outer surface. The scraper (5) is adapted to the through slots of the heat exchanger (3). A screw (6) is threaded to the bottom of the scraper (5). The heat exchanger (3) and the scraper (5) are together covered by a heat exchange box (4). The heat exchange box (4) has... A drive motor (7) is fixedly installed on the outer wall, and the output end of the drive motor (7) is coaxially fixedly connected to the screw (6). The other end of the heat exchange box (4) is connected to a return water pipe (9). The top of the spiral cooling pipe (2) is connected to a pure water tank (10), and a water pump (11) is installed at the bottom of the side of the pure water tank (10) connected to the spiral cooling pipe (2). The branch water pipe (102) at the bottom of the pure water tank (10) is connected to the return water pipe (9). A piston (12) is slidably installed in the inner cavity of the pure water tank (10), and a through hole is opened at the top of the pure water tank (10).

2. The cooling device for inhibiting scaling in a two-in-one graphite synthesis furnace according to claim 1, characterized in that, The heat exchange box (4) is provided with a horizontal branch pipe (401) at the bottom and a vertical branch pipe (402) at the top.

3. The cooling device for inhibiting scaling in a two-in-one graphite synthesis furnace according to claim 1, characterized in that, The bottom of the heat exchange box (4) is funnel-shaped, and a slag discharge valve (403) is provided at the bottom outlet of the funnel shape.

4. The cooling device for inhibiting scaling in a two-in-one graphite synthesis furnace according to claim 1, characterized in that, The inner cavity of the pure water tank (10) is provided with a limiting ring (101), and the limiting ring (101) is located above the branch water pipe (102) and the water pump (11) entering the inner cavity of the pure water tank (10).

5. The cooling device for inhibiting scaling in a two-in-one graphite synthesis furnace according to claim 1, characterized in that, The bottom of the pure water tank (10) is provided with a replenishment valve (103) for connecting a pure water pipe.

6. The cooling device for inhibiting scaling in a two-in-one graphite synthesis furnace according to claim 5, characterized in that, The pure water tank (10) has a vertical transparent observation window on its side wall.

7. The cooling device for inhibiting scaling in a two-in-one graphite synthesis furnace according to claim 1, characterized in that, The screw (6) is fitted with bearings (8) at both ends, and both bearings (8) are fixedly embedded in the side wall of the pure water tank (10).

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