CN2222160Y

CN2222160Y - Equipment for yellow phosphorus refining and phosphorus mud treatment

Info

Publication number: CN2222160Y
Application number: CN 95214525
Authority: CN
Inventors: 李文双
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-06-08
Filing date: 1995-06-08
Publication date: 1996-03-13
Anticipated expiration: 2005-06-08

Abstract

The utility model relates to equipment for yellow phosphorus refining and phosphorus mud treatment, which relates to the making and preparation of the yellow phosphorus in a non-metallic element aims at providing craftwork equipment which can overcome the shortcoming of a traditional craftwork. The utility model is designed into closed equipment, bottom is in an inverted conical shape, and the inner part is composed of a center pipe group, a center cylinder witha guiding plate, a double-layer overflow weir, the settling groove of a sloping plate and an annular filter. The utility model is used for the production of the yellow phosphorus, the process can be shortened, the equipment can be reduced, investment can be saved, energy consumption can be reduced, efficiency can be improved, and operational environment can be improved. The utility model not only can be used for newly constructed medium and small size yellow phosphorus production equipment, but also can be used for the reform of an old equipment.

Description

A kind of yellow phosphorus-refined and phosphorus mud treatment facility

The utility model relates to the preparation of non-metallic element, in particular to the preparation of yellow phosphorus.

As everyone knows, need obtain a part of product by rinsing refining kettle, standing demix from the thick phosphorus that got off by the condensation of phosphorus groove in the producing yellow Phosphorus by electric oven production process; A large amount of phosphorus mud and rinse water also must further reclaim the yellow phosphorus in the phosphorus mud by aftertreatment, to improve the productive rate of yellow phosphorus, alleviate its pollution to environment.At present, from phosphorus mud, reclaim yellow phosphorus method commonly used and mainly contain chemical method and physics method.Chemical method is to adopt to add chemicals to destroy the colloidal structure of phosphorus mud, reaches the purpose that reclaims yellow phosphorus thereby yellow phosphorus is separated with impurity.The shortcoming of this method is the cost height, equipment is many, disengaging time is long, production efficiency is low, and simultaneously, equipment corrosion is serious, operation is random greatly, the yellow phosphorus rate of recovery is low, and raffinate also needs neutralizing treatment.The physics method has two kinds of heating method and vacuum filtrations again.The former is with the heating of phosphorus mud, makes yellow phosphorus gasification wherein, condensation again, separation and recovery product; The latter carries out vacuum filtration with phosphorus mud with filter cloth, thereby reclaims yellow phosphorus wherein.These two kinds of physics methods all exist energy consumption height, operating environment is poor, the rate of recovery is low shortcoming, heating method also has problems such as process complexity, equipment corrosion are serious, vacuum filtration also have filter effect instability, severe operational environment, filter cloth consumption big, change problems such as frequent.Make a general survey of traditional phosphorus production technical process, no matter chemical method and physics method, employed one-level purification apparatus---refining kettle is simple in structure, function singleness, efficient are low, one time purified product yield is low, thereby must handle phosphorus mud and phosphorus-containing wastewater with huger secondary purification apparatus, cause that whole process flow is long, equipment is many, efficient is low, mutual aid is poor.Phosphorus mud and phosphorus-containing wastewater come transmission back betwixt, expend power and steam, and be also normal because of leakage, the spontaneous combustion of phosphorus, the contaminate environment of smoldering in the operation, the harm workers ' health.

Purpose of design of the present utility model, be to provide a kind of device that can overcome efficient, the multi-functional yellow phosphorus-refined and phosphorus mud processing of traditional technology defective, to simplify the phosphorus production flow process, cut down the consumption of energy, improve operating environment, to enhance productivity and economic benefit.

Designer of the present utility model is by studying for a long period of time, the shortcoming that exists at traditional technology and in conjunction with the needs of phosphorus production, design a kind of airtight cylindrical device, its bottom is a back taper, and inside is made up of the center inner core (2) of pipe core group (1), tape guide plate, double-deck overflow weir (9), inclined plate sedimentation groove (4), cellular an annular filter (A).This equipment is called treater, refining the concentrating of the refining and phosphorus mud of thick phosphorus in the phosphorus production can be finished, and is aided with a recycle pump, can finish that efficiently settlement separate, pump circulation rinsing, dosing are decomposed, repeatedly technological operation such as pressure filtration, repetitive scrubbing.

According to arts demand, design has the import and export of various materials on the treater, and bottom cone has insulation jacket (17), also is useful on the manhole (13) of maintenance on the cylindrical shell.

Pipe core group (1) is made up of the hot water distribution pipe of center hot-water line, lower end, top sewage inlet sleeve etc.

Center inner core (2) top is round shape, and the bottom is a back taper, following tape guide plate.

Double-deck overflow weir (9) design is at the treater top, divide upper and lower two-layer, the weir indentation.

Inclined plate sedimentation groove (4) design is at the treater middle part, and it is made up of some tilting metal sheets, forms a up big and down small multilayer conical vessel, drips sedimentation, gathering to quicken phosphorus.Vertical tube part is the band awl yellow phosphorus subsider at the end.

An annular filter (A) design is made up of upper sieve plate (24), following sieve plate (26) at the interannular of treater housing and yellow phosphorus subsider housing, and the centre accompanies filter cloth (23), and locks filter cloth with gantry card (5) of band chock (6).

The principle of work of treater is as follows: flow into a treater by the overflow sewage that come by the phosphorus groove, from pipe core (1) distributed flow through swash plate, make carry secretly what wherein, phosphorus that proportion is bigger drips sedimentation and builds up, along oblique flow to the subsider bottom, and contact washing with the effluent stream of upwards turning over stream is reverse, phosphorus is dripped with adherent grit separate, assemble the what bottom land.Sewage then progressively rises to the device top, compiles the effluent cycle system of back overflow to factory along weir, upper strata (9).When treater is used for making with extra care thick phosphorus, thick phosphorus is introduced by gravity flow or recycle pump.Power by pump makes circulation wash water and thick phosphorus thorough mixing, countercurrent washing, and the swash plate of flowing through drips to hold back down phosphorus, and progressively accumulates in subsider; The sewage that the weir, upper strata is compiled is phosphorous few, overflow to flow into the plant effuent recycle system, and the sewage that the lower floor weir is compiled is phosphorous more, and then the blowback of available cycles pump recycles.Take the circumstances into consideration to replenish part in the process and be subjected to phosphorus groove overflow sewage or hot wash water.The thick phosphorus that the phosphorus that reclaims from be subjected to phosphorus groove sewage adds together with the back, through above-mentioned circulation cleaning, sedimentation, most of grit impurity is by eccysis, and the hot water rinsing is used in termination of pumping this moment instead.Hot water is introduced with tangential way from the bottom via pipe core (1), produces certain eddy flow cutting action, further strengthens rinsing that phosphorus is dripped and separates.After the strong rinsing of hot water, just can be layered as salable product through standing sedimentation slightly and draw barrelling from outlet (14).For shortening the activity duration, the rinsing hot water amount is slightly larger, and swash plate can be held back most of phosphorus when rinse water rose, to improve the once yield of refining phosphorus.Flow through and still carry a certain amount of phosphorus secretly in the rinse water behind the swash plate, be called rich mud phosphorus, these rinse water rely on potential difference to compile from endless tube (10), flow into the compartment of an annular filter through inlet weir (12).Rinsing on one side, the other side then filters simultaneously.Element phosphor and water see through the filter cloth collection and go into the ring groove bottom, but the blowback of upper strata filtering water recycles as hot wash water.The hot water of using comparatively high temps after the termination of pumping instead carries out filtration washing once more, fully reclaims the phosphorus in the filter cake.The phosphorus that leaches is generally salable product, can draw barrelling from outlet (15).If, it can be pumped into refinery pit standing demix a little, promptly obtain salable product and draw barrelling from outlet (14) because of faults such as filter cloth perforation cause when defective.Phosphorus content greatly reduces in the filter cake (residue), available filtrate or hot water return to be washed, add chemicals and play the circulation stirring with pump, add the small amount of steam temperature adjustment again, after destroying its gel-like texture, get product, or draw through being pumped into an annular filter by outlet at bottom pipe (16) through rinsing, settled process, carry out the press filtration second time again, wash product, residue is discharged from outlet (7).Phosphorous very low in the residue, can be used for firing phosphoric acid etc.

But the treater separate unit uses, and two platforms also can be set as accompanying drawing 5, switches mutually and uses.

The equipment that uses the utility model to provide can make the technical process of phosphorus production shorten greatly, minimizing equipment, reduces 5～10 times of floor spaces; Reduce investment outlay 40%～90% (look equipment material and different); Cut down the consumption of energy, for 5000kVA type electric furnace, annual economize on electricity is 64～2,200,000 kW.h; Save steam 1850t (the about 250t/a of signature coal), improve the yield 5%～10% of phosphorus; Improve operational condition, alleviated environmental pollution.Equipment of the present utility model can be used for the new device that medium and small electric furnace yellow phosphorus is produced, and also can be used for the reorganization and expansion of original device.

Accompanying drawing 1 is a treater structural representation of the present utility model;

Accompanying drawing 2 is an A portion enlarged diagram in the accompanying drawing 1;

Accompanying drawing 3 is I in the accompanying drawing 1-I sectional schematic diagram;

Accompanying drawing 4 is the top view of accompanying drawing 1.

More than among 1～4 figure, 1 is the pipe core group, 2 is the center inner core of tape guide plate, 3 is the adding medicine pipe, and 4 are taper inclined plate sedimentation groove, and 5 is gantry card, 6 is chock with lock tight flat, and 7 are the residue outlet, and 8 is filtrate outlet, 9 is double-deck overflow weir, and 10 is rich phosphorus mud fairlead, and 11 is the wash water pipe, 12 is rich phosphorus mud import distribution weir, and 13 is manhole, 14,15 are the yellow phosphorus outlet, 16,18 is slag-drip opening, 17 is insulation jacket, and 19 are the insulation water inlet, and 20 are the insulation water out, 21 is gusset, 22 is fixed lower support grid, and 23 is filter cloth, and 24 is movable upper sieve plate, 25 is movable upper support grid, and 26 is fixed sieve plate down.

Accompanying drawing 5 is an application flow synoptic diagram of the present utility model, and wherein 1 for being subjected to the phosphorus groove, and 2 is No. 1 treater, and 3 is No. 2 treaters, and 4 for being recycle pump.

Embodiment: the electric furnace yellow phosphorus production line that furnace volume is 5000kVA, its throughput adopts two treaters as accompanying drawing 1～4 for producing 2kt yellow phosphorus per year.This treater profile as shown in Figure 1, drum diameter is Φ 2.8m, high 4.2m, add the awl end height overall 4.85m; The inner core upper diameter Φ 500mm of its conical centre, lower diameter Φ 300mm, height overall 2.2m; Taper inclined plate sedimentation groove (4) tilted plate section height is 1.3m, and tapered segment diameter of phi 1.5m, straight section height are 1.3m, and the awl section highly is 0.8m, swash plate spacing 0.1～0.19m, and swash plate is made with the stainless material of wall thickness 1.5mm; An annular filter external diameter Φ 2.8m, internal diameter Φ 1.5m, width are 0.65m, the epimere height is 2.4m, the hypomere height is 1.0m, filters sieve plate and makes with the stainless steel of thick 2～3mm, and the upper and lower grid of strainer (22,25) and gantry card (5) are all made with stainless material; Awl end insulation jacket (17) spacing 50mm, with the short tube reinforcing of Φ 50mm, long 60mm, cylindrical shell, cone, top cover, insulation jacket are that the carbon steel of 6～8mm is made with thickness all.This treater removes manhole (13), pipeline connects with flange, and outside strainer fastened with gantry, all the other were all made with welding process.Rich phosphorus mud fairlead (10) is a ring pipe, makes with the carbon steel seamless tube of Φ 89, and overflow weir is made spination with the stainless steel of thick 2mm.Two application of treater in production line mode as shown in Figure 5.

Claims

1, a kind of yellow phosphorus-refined and phosphorus mud treatment facility in the electric furnace process phosphorus production technology,

Be characterised in that it is a kind of airtight equipment, the bottom is back taper, and its inside is made up of the central tube (2) of pipe core group (1), tape guide plate, double-deck overflow weir (9), inclined plate sedimentation groove (4), cellular an annular filter (A).

2, according to the described equipment of claim 1, it is characterized in that having on this equipment the import and export of various materials, bottom cone has insulation jacket, and manhole is arranged on the cylindrical shell.

3,, it is characterized in that the pipe core group is made up of center hot-water line, lower end hot water distribution pipe, top sewage inlet sleeve according to the described equipment of claim 1.

4, according to the described equipment of claim 1, it is characterized in that central tube top is round shape, the bottom is a back taper, following tape guide plate.

5, according to the described equipment of claim 1, it is characterized in that double-deck overflow weir is positioned at its upper side, divide upper and lower two-layer, the weir indentation.

6, according to the described equipment of claim 1, it is characterized in that the inclined plate sedimentation groove is positioned at the equipment middle part, tilted plate section is formed taper by some tilting metal sheets, and direct tube section is the band awl subsider at the end.

7, according to the described equipment of claim 1, it is characterized in that the interannular of an annular filter at apparatus casing and subsider housing, form by upper and lower sieve plate and filter cloth therebetween, with the tight filter cloth of gantry kayser of band chock.

8,, it is characterized in that equipment and parts thereof adopt stainless material or carbon steel material to make according to the described equipment of claim 1.