CN111804254A - High-efficient heat transfer cauldron - Google Patents

Abstract

The invention discloses a high-efficiency heat exchange kettle, which comprises a kettle body, a feeding valve, a discharging valve, a pump, a gas tank, a gas injection frame, a gas pipe and a controller, wherein the kettle body comprises a kettle body, a kettle cover for sealing the top opening of the kettle body and support legs fixed on the outer wall of the lower end of the kettle body in a surrounding manner, the gas injection frame comprises a vertical pipe, a plurality of ring pipes and a plurality of nozzles, the ring pipes are sequentially fixed between a left vertical pipe and a right vertical pipe from top to bottom and are communicated with the vertical pipe, the nozzles are uniformly fixed on the inner arc side of the ring pipes, the gas pipe comprises a first pipe body, a second pipe body and a third pipe body, one end of the first gas pipe is fixed on a gas inlet pipe at the bottom end of the vertical pipe, the other end of the first gas pipe is connected with the pump after penetrating through a gas inlet insertion pipe at the left lower end of the kettle body, the two ends of the second, can bear the corrosion of chloride ions and has good heat exchange effect.

Description

A high-efficiency heat exchange kettle

【Technical field】

The invention relates to the technical field of heat exchange kettles, in particular to the technical field of a high-efficiency heat exchange kettle.

【Background technique】

The amination reaction between p-toluenesulfonamide and ammonia is a typical exothermic reaction. The amination process is one of the dangerous processes under the national key supervision, and it is necessary to focus on monitoring the temperature in the amination reaction kettle. Because the reaction product contains chloride ions, the reaction kettle is generally made of glass-lined material, but the thermal conductivity of the enamel is low, and the heat exchange effect is very poor, and the interlock is often triggered by over-temperature, resulting in stopping the feeding and making the production unsteady, which needs to be solved urgently.

[Content of the invention]

The purpose of the present invention is to solve the problems in the prior art, and to propose a high-efficiency heat exchange kettle, which can withstand chloride ion corrosion and has good heat exchange effect.

In order to achieve the above purpose, the present invention proposes a high-efficiency heat exchange kettle, including a kettle body, a feed valve, a discharge valve, a pump, a gas tank, an air jet frame, a gas pipe and a controller, and the kettle body includes a kettle body, a closed The kettle cover with the top opening of the kettle body and the outriggers fixed on the outer wall of the lower end of the kettle body, the feeding valve and the discharging valve are respectively fixed on the feeding pipe at the upper right end of the kettle body and the discharging pipe in the center of the bottom end, The jetting rack is located in the inner cavity of the kettle body, and the jetting rack includes a standpipe, a plurality of ring pipes fixed between the left and right standpipes in turn from top to bottom and communicated with the standpipe, and a number of ring pipes evenly fixed on the standpipe. The nozzle on the inner arc side of the ring pipe, the gas pipe includes a first pipe body, a second pipe body and a third pipe body, one end of the first gas pipe is fixed on the air inlet pipe at the bottom end of the standpipe, and the other end is passing through the kettle body The air inlet tube at the lower left end is connected to the pump, the two ends of the second air tube are respectively connected to the air outlet of the air tank and the pump, one end of the third air tube is fixed on the air return port of the air tank and the other end is It is fixed on the gas outlet tube at the upper left end of the kettle body, the upper end of the standpipe is provided with a gas outlet tube, and the controller is respectively electrically connected with the feeding valve, the discharging valve and the pump.

Preferably, both the feed pipe and the gas outlet cannula are located on the air jet frame, and the end of the feed pipe extending into the inner cavity of the kettle body is located above between the left and right vertical pipes.

Preferably, several temperature detectors are arranged on the inner wall of the kettle body, and the temperature detectors are electrically connected to the controller.

Preferably, the kettle wall of the kettle body includes a carbon steel layer and a pure titanium layer coated outside the carbon steel layer.

Preferably, the middle part of the front side of the kettle body is provided with a side opening, and the side opening is closed by a side cover.

Preferably, an included angle of 30-45° is formed between the line connecting the bottom end of the spray head and the center of the ring pipe and the central axis of the spray head.

Preferably, a water tank is also included, and the middle section of the third air pipe is meanderingly arranged in the water tank.

Beneficial effects of the present invention: the present invention uses pure titanium with a thermal conductivity of 15.24W/m·K by coating the carbon steel layer with a pure titanium layer, so that the thermal conductivity of the kettle body is more than 10 times that of a general enamel kettle body, It can withstand chloride ion corrosion, and the baffle plate can be welded according to the needs, and the cost performance is relatively high; by setting the pump, the gas tank and the jet frame, the ejected gas is used to make the raw material liquid produce strong disturbance, effectively enhancing the heat exchange effect; By setting a water tank and placing the middle section of the third pipe body in the water tank, the gas is cooled to further improve the cooling effect; by setting several temperature detectors in the kettle body, the temperature of the reaction liquid can be monitored in real time to avoid over-temperature .

The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

【Description of drawings】

Fig. 1 is the front view of a kind of high-efficiency heat exchange still of the present invention;

Fig. 2 is the front sectional view of the kettle body of a kind of high-efficiency heat exchange kettle of the present invention;

Fig. 3 is the front view of the jet frame of a kind of high-efficiency heat exchange kettle of the present invention;

Fig. 4 is the top view of the jet frame of a kind of high-efficiency heat exchange kettle of the present invention;

Fig. 5 is the structural representation of the still wall of the still body of a kind of high-efficiency heat exchange still of the present invention.

In the picture: 1-kettle body, 11-kettle body, 111-feeding pipe, 112-discharging pipe, 113-inlet intubation, 114-outlet intubation, 115-carbon steel layer, 116-pure titanium layer, 117-side cover, 12-kettle cover, 13-outrigger, 2-feed valve, 3-discharge valve, 4-pump, 5-air tank, 6-jet rack, 61-standpipe, 611-air outlet pipe , 612-air intake pipe, 62-ring pipe, 63-spray head, 7-trachea, 71-first pipe body, 72-second pipe body, 73-third gas pipe, 8-water tank.

【Detailed ways】

Referring to Figures 1 to 5, a high-efficiency heat exchange kettle of the present invention includes a kettle body 1, a feed valve 2, a discharge valve 3, a pump 4, a gas tank 5, a jet frame 6, a gas pipe 7 and a controller. The kettle body 1 includes a kettle body 11, a kettle cover 12 that closes the top opening of the kettle body 11, and a support leg 13 that is fixed on the outer wall of the lower end of the kettle body 11. The feed valve 2 and the discharge valve 3 are respectively fixed on the kettle body. 11. On the feed pipe 111 at the upper right end and the discharge pipe 112 at the center of the bottom end, the air jet frame 6 is located in the inner cavity of the kettle body 11, and the air jet frame 6 includes a riser 61, a number of which are fixed in sequence from top to bottom A ring pipe 62 between the left and right stand pipes 61 and communicating with the stand pipes 61 and a plurality of nozzles 63 evenly fixed on the inner arc side of the ring pipe 62, the gas pipe 7 includes a first pipe body 71 and a second pipe body 72 and the third pipe body 73, one end of the first air pipe 71 is fixed on the intake pipe 612 at the bottom end of the standpipe 61 and the other end is connected with the pump 4 after passing through the intake intubation pipe 113 at the lower left end of the kettle body 11, The two ends of the second gas pipe 72 are respectively connected with the air outlet of the gas tank 5 and the pump 4, one end of the third gas pipe 73 is fixed on the air return port of the gas tank 5 and the other end is fixed on the upper left end of the kettle body 11. On the gas outlet cannula 114, the upper end of the standpipe 61 is provided with a gas outlet pipe 612, and the controller is respectively electrically connected with the feed valve 2, the discharge valve 3 and the pump 4, the feed pipe 111 and the gas outlet cannula 114 are all located on the jet frame 6, the end of the feeding pipe 111 extending into the inner cavity of the kettle body 11 is located above the left and right standpipes 61, and the inner wall of the kettle body 11 is provided with a number of temperature detectors , the temperature detector is electrically connected to the controller, the kettle wall of the kettle body 11 includes a carbon steel layer 115 and a pure titanium layer 116 clad outside the carbon steel layer 115, and the middle part of the front side of the kettle body 11 There is a side opening, the side opening is closed by the side cover 117, the connection line between the bottom end of the spray head 63 and the center of the ring pipe 62 and the central axis of the spray head 63 form an included angle of 30 to 45°, and also includes a water tank 8 , the middle section of the third air pipe 73 is meanderingly arranged in the water tank 8 .

The working process of the present invention:

First, the raw materials are put into the inner cavity of the kettle body 11 through the feeding pipe 111 to carry out the reaction. During the reaction, the pump 4 sends the gas in the gas tank 5 that is insoluble in the raw material liquid and does not react with the raw material liquid into the air jet rack 6 along the second pipe body 72 and the first pipe body 71, and then from several The nozzles 63 are sprayed out. The gas ejected obliquely by the nozzle 63 continuously stirs the raw material liquid, so that the raw material liquid forms a vortex, and cooperates with the kettle wall made of pure titanium carbon steel to effectively dissipate heat. Subsequently, the gas flows out of the kettle body 1 along the third gas pipe 73 , passes through the water tank 8 to cool down, and then returns to the gas tank 5 again. A stirrer can be installed on the kettle cover 12 to stir the raw materials, and the stirring direction of the stirrer is consistent with the vortex direction of the raw material liquid produced by the gas flow.

In the present invention, the pure titanium layer is coated on the carbon steel layer, and the pure titanium with the thermal conductivity of 15.24W/m·K is used, so that the thermal conductivity of the kettle body is more than 10 times that of the general enamel kettle body, and it can withstand chloride ion corrosion. The baffle plate can be welded according to the needs, and the cost performance is relatively high; by setting the pump, the gas tank and the jet frame, the raw material liquid is strongly disturbed by the sprayed gas, and the heat exchange effect is effectively enhanced; The middle section of the third pipe body is meanderingly placed in the water tank to cool the gas and further improve the cooling effect; by setting several temperature detectors in the kettle body, the temperature of the reaction liquid is monitored in real time to avoid over-temperature.

The above-mentioned embodiments are illustrative of the present invention, not limitations of the present invention, and any simple transformation scheme of the present invention belongs to the protection scope of the present invention.

Claims (7)

1. The utility model provides a high-efficient heat transfer cauldron which characterized in that: comprises a kettle body (1), a feeding valve (2), a discharging valve (3), a pump (4), an air tank (5), an air injection frame (6), an air pipe (7) and a controller, wherein the kettle body (1) comprises a kettle body (11), a kettle cover (12) for sealing the top opening of the kettle body (11) and supporting legs (13) fixed on the outer wall of the lower end of the kettle body (11) in a surrounding way, the feeding valve (2) and the discharging valve (3) are respectively fixed on a feeding pipe (111) at the upper right end of the kettle body (11) and a discharging pipe (112) at the center of the bottom end, the air injection frame (6) is positioned in the inner cavity of the kettle body (11), the air injection frame (6) comprises a vertical pipe (61), a plurality of ring pipes (62) which are sequentially fixed between the left vertical pipe (61) and the right vertical pipe (61) from top to bottom and are communicated with the vertical pipe (61), and a plurality of, trachea (7) include first body (71), second body (72) and third body (73), the one end of first trachea (71) is fixed on intake pipe (612) of riser (61) bottom and the other end is connected with pump (4) after wearing out air inlet intubation tube (113) of cauldron body (11) left lower extreme, the both ends of second trachea (72) are connected with gas outlet and pump (4) of gas pitcher (5) respectively, the one end of third trachea (73) is fixed on the return air inlet of gas pitcher (5) and the other end is fixed on the intubate of giving vent to anger (114) of cauldron body (11) upper left end, the upper end of riser (61) is equipped with outlet duct (612), the controller is connected with feed valve (2), ejection of compact valve (3) and pump (4) electricity respectively.

2. The high efficiency heat exchange kettle of claim 1, wherein: the feeding pipe (111) and the air outlet insertion pipe (114) are both positioned on the air injection frame (6), and one end of the feeding pipe (111) extending into the inner cavity of the kettle body (11) is positioned above the left vertical pipe and the right vertical pipe (61).

3. The high efficiency heat exchange kettle of claim 1, wherein: the inner wall of the kettle body (11) is provided with a plurality of temperature detectors, and the temperature detectors are electrically connected with the controller.

4. The high efficiency heat exchange kettle of claim 1, wherein: the kettle wall of the kettle body (11) comprises a carbon steel layer (115) and a pure titanium layer (116) coated outside the carbon steel layer (115).

5. The high efficiency heat exchange kettle of claim 1, wherein: the front side middle part of cauldron body (11) is equipped with the side opening, the side opening is sealed by side cap (117).

6. The high efficiency heat exchange kettle of claim 1, wherein: and an included angle of 30-45 degrees is formed between the connecting line of the bottom end of the spray head (63) and the circle center of the ring pipe (62) and the central axis of the spray head (63).

7. The high efficiency heat exchange kettle of claim 1, wherein: the air purifier also comprises a water tank (8), and the middle section of the third air pipe (73) is arranged in the water tank (8) in a winding manner.

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