Calcium chloride reaction device

Abstract

The utility model discloses a calcium chloride reaction device which comprises a reaction kettle and a precipitation separation tank, a calcium carbonate stone adding port is arranged on the reaction kettle, a hydrochloric acid adding port is arranged at the bottom of the reaction kettle and is communicated with a hydrochloric acid adding pipeline, and a liquid inlet pipe is arranged in a tank body of the precipitation separation tank. A liquid inlet of the liquid inlet pipe is communicated with the reaction kettle through an overflow pipeline, a liquid outlet pipe is further fixed in the precipitation separation tank, a bottom inlet of the liquid outlet pipe is lower than a bottom outlet of the liquid inlet pipe, a liquid outlet of the liquid outlet pipe is lower than a liquid inlet of the liquid inlet pipe, and an oil film separation pipe is further arranged on the precipitation separation tank. The upper separating opening is higher than a liquid outlet of the liquid outlet pipe and lower than a liquid inlet of the liquid inlet pipe, the oil film separating pipe is connected with an oil film collecting box, and a sediment discharging opening is further formed in the bottom of the sediment separating tank; a gas phase opening is formed in the top of the precipitation separation tank. According to the reaction device, oily substances are separated from the precipitation separation tank, so that the oily substances are prevented from entering a filter pressing process to influence the service life of the filter cloth, and the quality of a calcium chloride finished product solution is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of calcium chloride reaction devices, belong to calcium chloride making technical field. BACKGROUND

[0002] At present, reaction device is used in the production process of calcium chloride solution, and the current reaction device mainly includes a reaction kettle. First, part of calcium carbonate is added into the reaction kettle, then hydrochloric acid is slowly added from the bottom to make it fully react, and the overflow from the upper part of the reaction kettle enters the subsequent neutralization reaction tank for neutralization reaction, and then is subjected to pressure filtration, so that the finished product calcium chloride solution is obtained. However, after the reaction of the reaction kettle is completed, part of black oily substance is produced. Due to the low density of the oily substance after the reaction, the oily substance will float on the upper layer and enter the later neutralization device and pressure filtration device with the calcium chloride solution from the upper overflow port. The oily substance sticks to the filter cloth of the pressure filter during the pressure filtration process of the reacted material, which greatly affects the pressure filtration efficiency of the pressure filter and shortens the service life of the filter cloth. Part of the oily substance also enters the calcium chloride solution product tank through the filtrate, which affects the quality of the calcium chloride solution product and affects the quality of the granulation product in the subsequent process. SUMMARY

[0003] The technical problem to be solved by the utility model is to provide a calcium chloride reaction device. The reaction device enters a sedimentation and separation tank before entering the next neutralization process to separate the oily substance, avoid the oily substance from entering the pressure filtration process to affect the service life of the filter cloth, and greatly improve the quality of the calcium chloride product solution.

[0004] To solve the above technical problems, the technical scheme of the utility model is as follows: a calcium chloride reaction device, comprising a reaction kettle, a calcium carbonate addition port is arranged on the reaction kettle, a hydrochloric acid addition port is arranged at the bottom of the reaction kettle, the hydrochloric acid addition port is communicated with a hydrochloric acid addition pipeline, an overflow port is arranged at the top of the reaction kettle, the reaction device further comprises a sedimentation and separation tank, a liquid inlet pipe is arranged in the tank body of the sedimentation and separation tank, the bottom outlet of the liquid inlet pipe extends downward and is immersed in the middle of the liquid, the liquid inlet of the liquid inlet pipe is communicated with the overflow port through an overflow pipeline, a liquid outlet pipe is further fixed in the sedimentation and separation tank, the bottom inlet of the liquid outlet pipe is lower than the bottom outlet of the liquid inlet pipe, the liquid outlet of the liquid outlet pipe is lower than the liquid inlet of the liquid inlet pipe, an oil film separation pipe is further arranged on the sedimentation and separation tank, the upper separation port of the oil film separation pipe extends upward, the upper separation port is higher than the liquid outlet of the liquid outlet pipe and lower than the liquid inlet of the liquid inlet pipe, the oil film separation pipe is connected with an oil film collection tank, and a sediment outlet is further arranged at the bottom of the sedimentation and separation tank; a gas phase port is arranged at the top of the sedimentation and separation tank.

[0005] As a preferred scheme, the sediment outlet is communicated with the reaction kettle through a reflux pipeline.

[0006] As a preferred scheme, the reaction kettle comprises a first reaction kettle and a second reaction kettle, the first reaction kettle and the second reaction kettle are identical in structure, the liquid inlet of the second reaction kettle is communicated with the overflow port of the first reaction kettle through an overflow pipe, and the overflow port of the second reaction kettle is communicated with the liquid inlet of the liquid inlet pipe of the precipitation separation tank through an overflow pipe.

[0007] As a preferred scheme, the bottom of the cavity of the first reaction kettle and the second reaction kettle is provided with a liquid distribution pipe, the liquid distribution pipe is communicated with the hydrochloric acid adding port, and a plurality of hydrochloric acid outlet ports are arranged on the liquid distribution pipe.

[0008] As a preferred scheme, the bottom inlet of the liquid outlet pipe is 45-55 cm away from the bottom of the precipitation separation tank.

[0009] As a preferred scheme, the upper separation port of the oil film separation pipe is arranged in a horn shape.

[0010] As a preferred scheme, the distance between the upper separation port of the oil film separation pipe and the liquid outlet port of the liquid outlet pipe is 10-15 cm.

[0011] As a preferred scheme, the precipitation separation tank is further provided with an aeration stirring pipe communicated with the gas phase port, and the lower end of the aeration stirring pipe extends to the bottom of the precipitation separation tank.

[0012] The utility model discloses the effect is: because calcium chloride reaction device, including the reaction kettle, be provided with calcium carbonate stone adding mouth on the reaction kettle, the bottom of reaction kettle is provided with hydrochloric acid adding mouth, hydrochloric acid adding mouth and hydrochloric acid adding pipeline intercommunication, the top of reaction kettle is provided with overflow, the reaction device still includes the sedimentation separation jar, the jar body of sedimentation separation jar is provided with the liquid inlet pipe, the bottom outlet of liquid inlet pipe extends downward and is immersed in the middle part of liquid, the liquid inlet of liquid inlet pipe and overflow between overflow pipe intercommunication, the sedimentation separation jar still is fixed with the liquid outlet pipe, the bottom inlet of liquid outlet pipe is lower than the bottom outlet of liquid inlet pipe, the liquid outlet of liquid outlet pipe is lower than the liquid inlet of liquid inlet pipe, still be provided with oil film separation pipe on the sedimentation separation jar, the upper separation of oil film separation pipe extends upward, the upper separation is higher than the liquid outlet of liquid outlet pipe and is lower than the liquid inlet of liquid inlet pipe, and the oil film separation pipe is connected with oil film collection tank, and the bottom of sedimentation separation jar still is provided with the sedimentary material outlet; The top of sedimentation separation jar is provided with gas phase mouth, therefore, after the reaction of hydrochloric acid and calcium carbonate in the reaction kettle, the liquid after reaction will enter the liquid inlet pipe of sedimentation separation jar, because the liquid inlet pipe will be inserted below the liquid level, so the disturbance to the originally static liquid can be reduced when liquid inlet, and the density of oil, calcium chloride solution and solid impurities is different after the liquid is deposited in the sedimentation separation jar, therefore, the bottom inlet of liquid outlet pipe is lower than the bottom outlet of liquid inlet pipe, and the upper separation is higher than the liquid outlet of liquid outlet pipe and is lower than the liquid inlet of liquid inlet pipe, so that the liquid outlet pipe can discharge the calcium chloride solution in the middle part, and the oil film separation pipe can separate the oil above the liquid surface of the liquid outlet of liquid outlet pipe, thereby ensuring that no calcium chloride flows out, and the bottom is provided with the sedimentary material outlet, so that the three different density substances can be separated, so that the service life of filter cloth is prolonged after the subsequent neutralization reaction and pressure filtration of calcium chloride, and the calcium chloride solution is more pure.

[0013] And because the sedimentary material outlet is communicated with the reaction kettle through the reflux pipeline, so the solid sediment can be refluxed into the reaction kettle for further reaction, avoiding the waste of calcium carbonate.

[0014] And because the reaction kettle includes the first reaction kettle and the second reaction kettle, the first reaction kettle and the second reaction kettle are same in structure, the liquid inlet of the second reaction kettle is communicated with the overflow of the first reaction kettle through the overflow pipe, and the overflow of the second reaction kettle is communicated with the liquid inlet of the liquid inlet pipe of the sedimentation separation jar through the overflow pipe, so that the first reaction kettle and the second reaction kettle can further make the calcium carbonate and hydrochloric acid fully react.

[0015] And the bottom of the first reaction kettle and the second reaction kettle cavity is provided with a liquid distribution pipe, the liquid distribution pipe is communicated with the hydrochloric acid adding port, a plurality of hydrochloric acid liquid outlets are arranged on the liquid distribution pipe, the liquid distribution pipe can make the hydrochloric acid more dispersed when entering, the contact surface of the hydrochloric acid and the calcium carbonate is larger, and the reaction is faster.

[0016] And the upper separation port of the oil film separation pipe is arranged in a horn shape, so that the oil film separation pipe can collect a larger oil film surface, and the oil can be better separated.

[0017] And the precipitation separation tank is further provided with an aeration stirring pipe communicated with the gas phase port, and the lower end of the aeration stirring pipe extends to the bottom of the precipitation separation tank, so that compressed air can be periodically introduced into the aeration stirring pipe, the mud at the bottom of the precipitation separation tank is stirred and compressed by air pressure to participate in the reaction in the first reaction kettle, the mud is discharged more smoothly, and blockage is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model will be further described below in combination with the drawings and examples.

[0019] Figure 1 It is the structure schematic diagram of the utility model embodiment;

[0020] In the drawings: 1, first reaction kettle;2, hydrochloric acid adding pipeline;3, liquid distribution pipe;4, overflow pipe;5, second reaction kettle;6, precipitation separation tank;7, liquid inlet pipe;8, gas phase port;9, liquid outlet pipe;10, aeration stirring pipe;11, oil film separation pipe;12, upper separation port;13, sediment discharge port;14, reflux pipeline;15, oil film collection tank. DETAILED DESCRIPTION

[0021] The utility model will be further described below in combination with the drawings and examples.

[0022] As Figure 1 The utility model discloses a calcium chloride reaction device, including the reaction kettle, the top of the reaction kettle is provided with the overflow port, the bottom of the reaction kettle is provided with the hydrochloric acid adding port, the hydrochloric acid adding port is communicated with the hydrochloric acid adding pipeline 2, the top of the reaction kettle is provided with the overflow port. The reaction kettle includes the first reaction kettle 1 and the second reaction kettle 5, the structure of the first reaction kettle 1 and the second reaction kettle 5 is same, the liquid inlet of the second reaction kettle 5 is communicated with the overflow port of the first reaction kettle 1 through the overflow pipe 4, and the overflow port of the second reaction kettle 5 is communicated with the liquid inlet of the liquid inlet pipe 7 of the precipitation separation tank 6 through the overflow pipe 4. The top cover of the first reaction kettle 1 and the second reaction kettle 5 can be opened and locked, and the calcium carbonate stone can be added into the first reaction kettle 1 and the second reaction kettle 5 from the top.

[0023] The reaction device further comprises a sedimentation separation tank 6, a liquid inlet pipe 7 is arranged in the tank body of the sedimentation separation tank 6, the bottom outlet of the liquid inlet pipe 7 extends downward and is immersed in the middle of the liquid, the liquid inlet of the liquid inlet pipe 7 is communicated with the overflow port of the second reaction kettle 5 through an overflow pipe 4, and a liquid outlet pipe 9 is further fixed in the sedimentation separation tank 6, the bottom inlet of the liquid outlet pipe 9 is lower than the bottom outlet of the liquid inlet pipe 7, and the liquid outlet of the liquid outlet pipe 9 is lower than the liquid inlet of the liquid inlet pipe 7, preferably, the liquid outlet of the liquid outlet pipe 9 is located at one third of the sedimentation separation tank 6 from the upper end. A gas phase port 8 is arranged at the top of the sedimentation separation tank 6.

[0024] An oil film separation pipe 11 is further arranged on the sedimentation separation tank 6, and the upper separation port 12 of the oil film separation pipe 11 is arranged in a horn shape. The upper separation port 12 of the oil film separation pipe 11 extends upward, the upper separation port 12 is higher than the liquid outlet of the liquid outlet pipe 9 and lower than the liquid inlet of the liquid inlet pipe 7, and the bottom inlet of the liquid outlet pipe 9 is 45-55 cm away from the tank bottom of the sedimentation separation tank 6. The distance between the upper separation port 12 of the oil film separation pipe 11 and the liquid outlet of the liquid outlet pipe 9 is 10-15 cm.

[0025] The oil film separation pipe 11 is connected with an oil film collection tank 15, and the oil in the oil film collection tank 15 is used for granulation heating in a burning system. A sediment outlet 13 is further arranged at the bottom of the sedimentation separation tank 6, and the sediment outlet 13 is communicated with the reaction kettle through a reflux pipe 14.

[0026] Control valves are arranged on each pipe, so that the opening and closing thereof can be controlled, when the sediment needs to be refluxed, the liquid outlet pipe 9, the liquid inlet pipe 7 and the oil film separation pipe 11 can be closed, then gas is introduced from the gas phase port 8, the pressure in the sedimentation separation tank 6 is increased, and thus the sediment is refluxed into the first reaction kettle 1 through the reflux pipe 14. Further preferably, an aeration stirring pipe 10 is further arranged in the sedimentation separation tank 6 and communicated with the gas phase port 8, and the lower end of the aeration stirring pipe 10 extends to the bottom of the sedimentation separation tank 6. In this way, the aeration stirring pipe 10 can be used to introduce compressed air for stirring at regular time, so that the sediment is mixed to form slurry, and thus the slurry can be more smoothly refluxed into the first reaction kettle 1.

[0027] A liquid distribution pipe 3 is arranged at the bottom in the cavity of the first reaction kettle 1 and the second reaction kettle 5, the liquid distribution pipe 3 is communicated with a hydrochloric acid adding port, a plurality of hydrochloric acid liquid outlets are arranged on the liquid distribution pipe 3, the liquid distribution pipe is beneficial to the dispersion of hydrochloric acid and facilitates the full contact with calcium carbonate stones.

[0028] The above-described embodiments are only preferred embodiments of the present application, and are not intended to limit the scope of the present application. Various modifications and improvements can be made to the technical solutions of the present application without departing from the design spirit of the present application, and all such modifications and improvements shall fall within the protection scope of the present application as defined by the claims.

Claims

1. A calcium chloride reaction device, comprising a reactor, wherein the reactor is provided with a calcium carbonate addition port, a hydrochloric acid addition port is provided at the bottom of the reactor, the hydrochloric acid addition port is connected to a hydrochloric acid addition pipeline, and an overflow port is provided at the top of the reactor, characterized in that: The reaction device also includes a sedimentation separation tank, a liquid inlet pipe is provided in the tank body of the sedimentation separation tank, the bottom outlet of the liquid inlet pipe extends downward and is immersed in the middle of the liquid, the liquid inlet of the liquid inlet pipe is connected to the overflow port through an overflow pipe, a liquid outlet pipe is also fixed in the sedimentation separation tank, the bottom inlet of the liquid outlet pipe is lower than the bottom outlet of the liquid inlet pipe, the liquid outlet of the liquid outlet pipe is lower than the liquid inlet of the liquid inlet pipe, an oil film separation pipe is also provided on the sedimentation separation tank, the upper separation port of the oil film separation pipe extends upward, the upper separation port is higher than the liquid outlet of the liquid outlet pipe and lower than the liquid inlet of the liquid inlet pipe, the oil film separation pipe is connected to an oil film collection box, the bottom of the sedimentation separation tank is also provided with a sediment discharge port; the top of the sedimentation separation tank is provided with a gas phase port.

2. a kind of calcium chloride reaction device as claimed in claim 1, is characterized in that: The sediment discharge port is connected to the reactor through a reflux pipeline.

3. a kind of calcium chloride reaction device as claimed in claim 2, is characterized in that: The reactor includes a first reactor and a second reactor. The first reactor and the second reactor have the same structure. The liquid inlet of the second reactor is connected to the overflow port of the first reactor through an overflow pipe. The overflow port of the second reactor is connected to the liquid inlet of the liquid inlet pipe of the sedimentation separation tank through the overflow pipe.

4. a kind of calcium chloride reaction device as claimed in claim 3, is characterized in that: A liquid distribution pipe is provided at the bottom of the first reactor and the second reactor cavity. The liquid distribution pipe is connected to the hydrochloric acid addition port, and a plurality of hydrochloric acid outlets are provided on the liquid distribution pipe.

5. a kind of calcium chloride reaction device as claimed in claim 4, is characterized in that: The bottom inlet of the liquid outlet pipe is 45-55 cm away from the bottom of the sedimentation separation tank.

6. a kind of calcium chloride reaction device as claimed in claim 5, is characterized in that: The upper separation port of the oil film separation tube is configured to be trumpet-shaped.

7. a kind of calcium chloride reaction device as claimed in claim 6, is characterized in that: The distance between the upper separation port of the oil film separation tube and the liquid outlet of the liquid outlet tube is 10-15 cm.

8. a kind of calcium chloride reaction device as claimed in claim 7, is characterized in that: An aeration and stirring pipe connected to the gas phase port is further provided in the sedimentation and separation tank, and the lower end of the aeration and stirring pipe extends to the bottom of the sedimentation and separation tank.

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