Phosphorus separation and purification method and equipment
A kind of equipment and crude phosphorus technology, which is applied in the field of phosphorus separation and purification, can solve problems such as inability to meet process requirements, and achieve the effects of low production conditions, easy process control, and low energy consumption
Inactive Publication Date: 2011-07-27
ZHONGQING YILAN GRP CO LTD
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Problems solved by technology
Once there is a quality problem in the raw materials during the production process, the patent cannot meet the process requirements
Method used
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[0025] The present invention will be further described below through examples, and examples are only used for detailed description of the present invention, and do not limit the present invention thereby.
[0026] First do the preparations before driving:
[0027] 1. The whole system is tested for hydraulic pressure, the system pressure is increased to 0.6MPA, and the pressure is maintained for 1 hour, and no pressure leakage is qualified.
[0028] 2. Open the pipeline and tank insulation system, preheat the pipeline, tank and tank, and keep the insulation temperature between 70-90°C.
[0029] 3. Fill the phosphorus tank B with hot water (the slag pool water can be used). Note that the temperature in the tank is controlled between 60-80°C.
[0030] Then proceed as follows:
[0031] 1. The liquid crude phosphorus or sludge phosphorus with a crude phosphorus purity between 10% and 30% is pumped from the crude phosphorus storage tank A into the pressure phosphorus tank B. A is...
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Abstract
The invention relates to a phosphorus separation and purification method in yellow phosphorus production and a used key equipment. The method comprises the following steps of: (1) taking liquid crude phosphorous with the purity of crude phosphorous of larger than 10 percent or phosphorus sludge as raw materials; (2) injecting hot water in a phosphorous pressing tank B; (3) conveying the raw materials into the phosphorous pressing tank B from a crude phosphorous storing tank A by siphon or pump; (4) using hot water for pressing the crude phosphorous or phosphorus sludge in the phosphorous pressing tank B into phosphorus separation and purification equipment C; and (5) opening a phosphorous discharging port at the lower end of the phosphorus separation and purification equipment C, and discharging yellow phosphorous with the purity of larger than 99 percent. The phosphorus separation and purification equipment consists of three parts of an elliptical sealing head 17, a cylinder and a cone-bending sealing head 3; the elliptical sealing head is in sealing connection with the upper end of the cylinder by a flange; the lower end of the cylinder is welded with the cone-bending sealing head; and the lower end of the cone-bending sealing head is provided with a slag-discharging pipe 1. The invention is a new method for using special filtering cloth to filter discontinuously, which doesnot cause replacement problem of filter materials containing phosphorus and is developed on the basis of the prior art. The phosphorus separation and purification method not only is applicable to separation and refining of crude phosphorus, but also is applicable to separation and purification of phosphorus sludge.
Description
technical field [0001] The invention relates to a phosphorus separation and purification method in yellow phosphorus production and key equipment used. Background technique [0002] In the production of yellow phosphorus electric furnace, the dust and volatile matter with high dispersion and strong adsorption capacity entering the electric furnace together with the materials will enter the condensation system together with the phosphorus furnace gas in the electric furnace, and the phosphorus vapor will condense on the dust surface. A stable phosphorus sludge will be formed, and it is difficult to separate elemental phosphorus from the phosphorus sludge by simple mechanical separation methods. At present, the following processes are usually used at home and abroad to separate and purify elemental phosphorus: 1. Static precipitation process; 2. Filtration separation process. Both of the above two processes produce a certain amount of sludge phosphorus, which also contains 10...
Claims
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IPC IPC(8): C01B25/047
Inventor 李文星王庆田李振宇余晨杨保勇尹品云赵理仁
Owner ZHONGQING YILAN GRP CO LTD