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Continuous vacuum crystallization device and application thereof

A technology of vacuum crystallization and crystallization kettle, applied in solution crystallization and other directions, can solve the problems of incompatibility with large-scale industrial needs, inability to continuously produce, energy loss, etc., and achieve the requirements of large-scale industrial production, stable liquid flow and energy saving Effect

Inactive Publication Date: 2010-03-03
成都炘焓能机械设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. It cannot be produced continuously and does not meet the needs of large-scale industries
[0004] 2. High energy consumption
Since the barium chloride production process requires more than 4 times of crystallization, the 4 times of crystallization cooling process is carried out in a natural state, resulting in energy loss

Method used

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  • Continuous vacuum crystallization device and application thereof
  • Continuous vacuum crystallization device and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: Combining figure 1 The continuous vacuum crystallization device includes a crystallization kettle 21, a raw material pump 5 connected to the inlet 17 of the crystallization kettle through a pipeline, a vacuum condensation recoverer 10 connected to the water vapor outlet 18 of the crystallization kettle through a pipeline, an electric heating temperature control device 13, and an axial flow pump 6 , 7, 8, bottom valve 14, etc., the bottom 22 of the crystallization tank is in the shape of a cone, and the top of the cone is connected to the bottom valve 14 of the crystallization tank; the electric heating temperature control device 13 is installed at more than half of the height in the crystallization tank , Axial flow pumps 6, 7, 8 are vertically installed in the middle of the crystallization kettle. The distance between the pump impeller 6 and the top of the vertebral body at the bottom of the crystallization kettle should be greater than one-third of the inner...

Embodiment 2

[0022] Example 2: Combining figure 2 Repeat embodiment 1 according to the same steps, but the bottom of the crystallization tank is provided with flow aids 19, 20, the flow aids include a fluid pump 20 and one end is connected with the fluid pump 20 and the other end outlet 19 is facing the valve 14 at the bottom of the crystallization tank The pipeline, the distance between pipeline outlet 19 and crystallization tank bottom valve is 100~500mm. The fluid pump 20 is a raw material liquid pump, which promotes the discharge of the product by pumping out the supersaturated solution of the corresponding crystal. During the production process, the crystals in the supersaturated solution settle at the bottom 22 of the crystallization kettle cone due to gravity, and when the discharge is not smooth, the flow-aid devices 19 and 20 are turned on to help discharge.

Embodiment 3

[0023] Embodiment 3: prepare barium chloride raw material liquid, the hydrated barium chloride raw material liquid that removes impurity through oxidation and filters is input crystallization kettle 21 through raw material pump 5, and electric heating temperature control device 13 heats and controls temperature to keep the temperature in crystallization kettle 21 At 100°C-113°C, preferably 103°C, the vacuum condensate recovery device 10 sucks water vapor and condenses it for recycling, the vacuum is maintained at 10-30Kpa, and the raw material liquid is formed in the crystallization tank 21 driven by the axial flow pumps 6, 7, and 8 The center of the kettle flows upwards, reaches the top of the kettle and then circulates downward along the wall of the kettle. The concentration of the raw material solution gradually increases. During the continuous process, the solute is thermally crystallized from the crystal nucleus to the crystal bell (induced by the first addition of the crys...

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Abstract

The invention discloses a continuous vacuum crystallization device and an application in the production of barium chloride, and the device comprises a crystallization pot, a raw material pump, a vacuum condensing recovery device, an electric heating temperature controlling device, a shaft flow pump and a bottom valve, wherein the bottom of the crystallization pot is in a conical shape, and the electric heating temperature controlling device is arranged at a place positioned above half height of the crystallization pot; the shaft flow pump is vertically arranged at the middle of the crystallization pot, the distance between the propeller of the pump and the top end of a conical body at the bottom of the crystallization pot is 1 / 3 time larger than the inner height of the crystallization pot,the propeller of the pump drives fluid raw materials upwards, and a liquid lifting pipe is arranged around the pump shaft of the shaft flow pump and the propeller of the pump; and the bottom of the crystallization pot can be also provided with a flow assisting device. The whole device is produced in enclosed environment, the process of crystallization is completed at one time, the device has continuous production process, high heating efficiency, stable fluid flow, stable and continuous crystallization, easy discharge for products and energy saving, and the device is not only suitable for large-scale industrial production, but also reduces environmental pollution and energy waste.

Description

technical field [0001] The invention relates to chemical equipment, in particular to a vacuum crystallization device and its application in the production of barium chloride. Background technique [0002] The vacuum concentration device has a concentration tank and a vacuum condensation recovery device. The liquid material is pumped into the concentration tank through a raw material pump, heated in the concentration tank, and concentrated under the suction of the vacuum pump in the vacuum condensation recovery device. It needs to complete crystallization and concentration again and again. It cannot be carried out continuously, especially in the production of barium chloride, it has the following disadvantages: [0003] 1. It cannot be produced continuously and does not meet the needs of large-scale industries. [0004] 2. High energy consumption. Since the barium chloride production process requires more than 4 times of crystallization, the 4 times of crystallization cooli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D9/02
Inventor 赖成文许章道
Owner 成都炘焓能机械设备有限公司
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