CN1152545A

CN1152545A - Technology and equipment for recovering yellow phosphorus from phosphorus sludge

Info

Publication number: CN1152545A
Application number: CN 96112616
Authority: CN
Inventors: 杨相东
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-09-05
Filing date: 1996-09-05
Publication date: 1997-06-25

Abstract

The present invetnion relates to a process for recovering yellow phosphorus from phosphorus slag and phosphorus mud and its equipment. Said equipment is composed of kettle, heating device, main shaft with air channel, transmission device, phosphorus conveying pipe, cooling tower and reaction vessel. The phosphorus slag and phosphorus mud are placed in the closed kettle, then the kettle is heated and rotated so as to recover yellow phosphorus. Said invented equipment is long in service life and low in energy consumption, and the recovered yellow phosphorus purity can be up to above 99.9%.

Description

A kind of Processes and apparatus that from the phosphorus body refuse, reclaims yellow phosphorus

The present invention relates to a kind of from being reclaimed the technology of yellow phosphorus manufacturer's depleted phosphorus body refuse and implementing the needed production unit of this technology.

In the prior art, use producing yellow Phosphorus by electric oven, can produce phosphorus mud, phosphorus slag the like waste, to this type of material, yellow phosphorus factory with sealing treatment in its placement and the pond, still, can be fuming when phosphorus mud, phosphorus slag surface because of lack of water and catch fire often, so, full of smoke, peculiar smell is smoked day in phosphorus mud, phosphorus slag are thrown aside the zone, causes great harm to environment, and in the depleted phosphorus mud, phosphorus slag in addition the yellow phosphorus of considerable part do not have and can produce fully, like this, also cause the waste of resource; At present, all study with regard to these problems both at home and abroad, try hard to and can address the above problem, it is reported, the method for existing recovery yellow phosphorus has steam filtration method, dry blowing method, chemical reagent reaction method or the like; The steam filtration method is phosphorus mud, slag to be put into container heat continuously with steam, become finished phosphorus after the phosphorus that make the dissolving of phosphorus body refuse, filters out is refining, still there is the phosphoric of 15%-20% not regain in phosphorus mud after handling in this way, the slag, and steam consumption quantity is big, the production cycle long (about 20 days), pollutes still serious; The dry blowing method be with phosphorus mud, slag pack into distillation iron pan internal heating iron pan, by guide pipeline phosphorus steam is imported the refining finished phosphorus that becomes in the water bath, this method energy consumption is higher, service life of equipment is short, and still have the phosphorus of 10%-20% residual in the phosphorus mud of handling, the slag, the problem such as placement, contaminate environment of waste is arranged so equally; The chemical reagent reaction method adopts dithiocarbonic anhydride to make extractant, quench and get yellow phosphorus, the more preceding two kinds of method advanced persons of this method, but its process cycle is long, yield is little, once quench get the back recrement also have the phosphorus of 2%-5% residual, operating procedure complexity, temperature are wayward, and wayward to the quality of yellow phosphorus.

The objective of the invention is: the deficiency that overcomes the method existence of above-mentioned phosphorus mud, slag processing, a kind of production technique and equipment that can all reclaim phosphoric in phosphorus mud, the slag basically is provided, the energy consumption of this Processes and apparatus is little (uses coal as heating fuel, 300 kilograms in phosphorus mud per ton, slag consumption coal), service life of equipment reaches 1-2, and good in economic efficiency (yellow phosphorus 15-20 ton is reclaimed in month production), needed fund is few, reclaiming yellow phosphorus purity can reach more than 99.9%, and economic benefit is remarkable especially.

Another object of the present invention is: thoroughly solve the phosphorus mud that produces in the yellow phosphorus factory production process, the pollution problem of slag, avoided secondary pollution, residue " three wastes " after reclaiming can not produce new pollution, the residue obtained fertilizer that can be used as, in whole process of production, since phosphorus mud, slag be enclosed in handle in the kettle, do not contact with the external world, do not pollute the environment.

The present invention is achieved in that the technology that reclaims yellow phosphorus from the phosphorus body refuse: it is that phosphorus mud, phosphorus slag are placed the kettle of sealing, kettle is placed the thermal source internal heating and kettle is rotated, and makes that phosphorus mud, slag are heated, yellow phosphorus wherein distils, refluxes, condenses; Concretely: it is the kettle that phosphorus mud, phosphorus slag is placed sealing, with this kettle place in the process furnace, under the drive of transmission mechanism, rotate with the speed that per minute 6-8 changes, make phosphorus mud, slag evenly stir, be heated, make wherein yellow phosphorus liquefaction, distillation, again by communicating vessels with condense, emit in the yellow phosphorus steam input reactor finished phosphorus.Reclaim the equipment of yellow phosphorus from the phosphorus body refuse: kettle (1) is connected with main shaft (2), parichnos (3) is arranged and be provided with the ventilating pit (4) that is communicated with parichnos (3) in the middle of the main shaft (2), kettle (1) places well heater (5), main shaft (2) is placed on the bottom bracket (6), one end of main shaft (2) connects transmission mechanism (7), the other end of main shaft (2) is connected with phosphorus transporting pipe road (8), phosphorus transporting pipe road (8) is communicated with cooling tower (9), one end of cooling tower (9) places in the reactor (10), the other end connects cold water pipe (11), the phosphorus of going out mouth (12) and mudhole (13) are arranged at the bottom of reactor (10), the side of kettle (1) is provided with opening for feed (14), kettle (1) places coal firing boiler (5), for increasing the effect of logical phosphorus gas, two ventilating pits (4) is arranged in the middle of the main shaft (2).

The present invention compared with prior art, overcome the deficiency of existing phosphorus mud, the existence of slag treatment process, a kind of production technique and equipment that can all reclaim phosphoric in phosphorus mud, the slag basically is provided, the energy consumption of this Processes and apparatus is little, service life of equipment is long, and is good in economic efficiency, and needed fund is few, reclaim yellow phosphorus purity and can reach more than 99.9%, economic benefit is remarkable especially; The present invention has thoroughly solved the phosphorus mud that produces in the yellow phosphorus factory production process, the pollution problem of slag, avoided secondary pollution, residue " three wastes " after reclaiming can not produce new pollution, the residue obtained fertilizer that can be used as, in whole process of production, since phosphorus mud, slag be enclosed in handle in the kettle, do not contact with the external world, do not pollute the environment; So the present invention has reached goal of the invention.

Accompanying drawing 1 is a device structure synoptic diagram of the present invention.

Embodiments of the invention: metal kettle (1) is connected with metal main shaft (2), main shaft (2) hollow, there is a parichnos (3) centre and is provided with the ventilating pit (4) that is communicated with parichnos (3), kettle (1) places coal firing boiler (5), main shaft (2) is placed on the bottom bracket (6), one end of main shaft (2) connects transmission mechanism (7) and motor, the other end of main shaft (2) is connected with phosphorus transporting pipe road (8), phosphorus transporting pipe road (8) is communicated with cooling tower (9), one end of cooling tower (9) places in the reactor (10), the other end connects cold water pipe (11), the phosphorus of going out mouth (12) and mudhole (13) are arranged at the bottom of reactor (10), and the side of kettle (1) is provided with opening for feed (14).The method of using is that 800 kilograms of phosphorus mud, phosphorus slag are packed into from opening for feed (14) in the kettle, fire coal filtered after will the kettle sealing and heat up, and start motor kettle is rotated, under the drive of transmission mechanism, rotate with the speed that per minute 6-8 changes, make phosphorus mud, slag evenly stir, be heated, make wherein yellow phosphorus liquefaction, distillation, again by communicating vessels with condense, emit in the yellow phosphorus steam input reactor finished phosphorus.

Claims

1, a kind of technology that reclaims yellow phosphorus from the phosphorus body refuse is characterized in that: it is that phosphorus mud, phosphorus slag are placed the kettle of sealing, kettle is placed the thermal source internal heating and kettle is rotated, and makes that phosphorus mud, slag are heated, yellow phosphorus wherein distils, refluxes, condenses.

2, according to the described this technology that from the phosphorus body refuse, reclaims yellow phosphorus of claim 1, it is characterized in that: it is the kettle that phosphorus mud, phosphorus slag is placed sealing, with this kettle place in the process furnace, under the drive of transmission mechanism, rotate with the speed that per minute 6-8 changes, make phosphorus mud, slag evenly stir, be heated, make wherein yellow phosphorus liquefaction, distillation, again by communicating vessels with condense, emit in the yellow phosphorus steam input reactor finished phosphorus.

3, a kind of equipment that from the phosphorus body refuse, reclaims yellow phosphorus, it is characterized in that: kettle (1) is connected with main shaft (2), parichnos (3) is arranged and be provided with the ventilating pit (4) that is communicated with parichnos (3) in the middle of the main shaft (2), kettle (1) places well heater (5), main shaft (2) is placed on the bottom bracket (6), one end of main shaft (2) connects transmission mechanism (7), the other end of main shaft (2) is connected with phosphorus transporting pipe road (8), phosphorus transporting pipe road (8) is communicated with cooling tower (9), one end of cooling tower (9) places in the reactor (10), the other end connects cold water pipe (11), and the phosphorus of going out mouth (12) and mudhole (13) are arranged at the bottom of reactor (10).

4, according to the described this equipment that reclaims yellow phosphorus from the phosphorus body refuse of claim 3, it is characterized in that: the side of kettle (1) is provided with opening for feed (14), and kettle (1) places coal firing boiler (5).

5, according to claim 3 or the 4 described this equipment that from the phosphorus body refuse, reclaim yellow phosphorus, it is characterized in that: two ventilating pits (4) are arranged in the middle of the main shaft (2).