CN205294836U

CN205294836U - Sulphur recovery system

Info

Publication number: CN205294836U
Application number: CN201521121769.5U
Authority: CN
Inventors: 刘海滨
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-12-31
Filing date: 2015-12-31
Publication date: 2016-06-08
Anticipated expiration: 2025-12-31

Abstract

The utility model discloses a temperature control is convenient, and clear solution, steam and/or the comdenstion water of production can just can reduce environmental pollution sulphur recovery system by make full use of, including centrifuge, sulfur melting cauldron, agitator tank, screw pump, the sulfur melting cauldron including feed inlet, discharge gate, leakage fluid dram, establish steam inlet and liquid outlet on the heating jacket of sulfur melting cauldron lower part, the agitator tank passes through screw pump and feed inlet intercommunication, steam inlet department is equipped with the temperature -sensing valve. Leakage fluid dram department is equipped with the temperature -sensing valve. Liquid outlet and catch water intercommunication. The leakage fluid dram passes through temperature -sensing valve and cooling bath intercommunication, and the cooling bath communicates sulfur melting cauldron upper portion with the agitator tank and is equipped with the heating jacket, is equipped with steam inlet, liquid outlet on this heating jacket, and steam inlet department is equipped with the temperature -sensing valve. Sulphur through this sulphur recovery system produces is of high quality, the utility model discloses corruption to equipment obviously alleviates, can also reduction in production cost.

Description

A kind of sulfur recovery system

Technical field

This utility model relates to sulfur extraction equipment, particularly a kind of sulfur recovery system.

Background technology

Powerful gradually along with China, the requirement of environmental conservation is also more and more higher, and the zero-emission of Coal Chemical Industry desulphurization system will become final goal. In China's coal chemical industry, mostly adopt wet desulfurization system at present, because its cost is low, easily operate and be widely adopted. Wet desulfurization system includes absorbing, regenerating and the big process of sulfur recovery three, in three big processes, sulfur recovery problem is maximum, it is most difficult to process, especially coke-oven plant, chemical fertilizer factory is now in order to reduce production cost, sulphur coal has started to be used in a large number, the process of the sulfur foam thing that also have a headache, take great energy most most in Cheng Liao coke-oven plant.

In wet desulfurization system, sulfur foam processes and is generally divided into two classes, one class is the molten sulfur of continuous sulfur melting kettle: the sulfur foam of the sulfur-bearing 5%-15% flowed down with regenerator throws sulfur melting kettle into by foam pump, after steam in the additional hot jacket of sulfur melting kettle heats the sulfur foam in sulfur melting kettle, sulfur granules is deposited to after bottom melts through putting sulfur mouth desulphurization to connecing in sulfur box, sulfur in lump form is obtained after cooling, its clear liquid stream is in clear liquid groove, and clear liquid enters back into system circulation after precipitate and separate. This method shortcoming is that clear liquid temperature reaches 70 DEG C-90 DEG C; Clear liquid temperature more than 50 DEG C after, secondary salt can be generated at double, the rising of secondary salt content can make equipment corrosion, blocking pipeline valve, desulfuration efficiency can be made to decline, and regeneration effect is bad, goes out foam inefficient, causing system suspension sulfur to raise and block filler, when secondary salt is too high, sulfur melting kettle melts out sulfur and reduces tacky or become mud shape etc. For this, this occurs in coke-oven plant, and only way is exactly that a large amount of discharge opeing goes to reduce secondary salt content in doctor solution, so contaminated environment, two cause the various components in doctor solution to consume excessive, a large amount of discharge opeing is needed for ensureing doctor solution component, then it is supplemented with new liquid, causes production cost to raise. Another kind of is release sulfur cream after sulfur foam adopts mechanical filter, and liquid enters back into system circulation after filtering. The product that this method deals is sulfur cream rather than sulfur in lump form, and nobody want, too dirty contaminated environment, only pays the bill to allow others pull away process.

The patent No. is the sulfur melting kettle of a kind of fusible sulfur mud of ZL201420154214.X, include kettle, feed pipe, charging aperture, conic distributor, kettle middle and lower part is provided with and adds hot jacket, and heating puts and is provided with air intake, liquid outlet, described in add hot jacket be divided into add hot jacket and under add hot jacket; Under add and inside the sulfur melting kettle at hot jacket place, be provided with connecting tube, connecting tube two ends with under add hot jacket and connect, connecting tube is positioned at above conical lower portion; The described feed pipe mouth of pipe is relative with the tapering of the conic distributor being located within sulfur melting kettle, is provided with gap between conic distributor and kettle. But, the temperature of this patent controls very inconvenient, and it is not so good that effect recycled by the clear liquid of generation, and environment also produces certain pollution; The water vapour ejected from liquid outlet and/or condensed water are also without realizing scientific utilization.

Summary of the invention

This utility model solves the technical problem that to be to provide a kind of temperature easy to control, the clear liquid, water vapour and/or the condensed water that produce can make full use of and can reduce environmental pollution sulfur recovery system, this sulfur recovery system can also reduce production cost, improves productivity effect.

Technical solutions of the utility model so complete, a kind of sulfur recovery system, include centrifuge, sulfur melting kettle, agitator tank, screw pump, sulfur melting kettle includes charging aperture, discharging opening, leakage fluid dram, is located at air intake and liquid outlet that the heating of sulfur melting kettle bottom puts, agitator tank is connected with charging aperture by screw pump, and described air intake place is provided with temperature-sensing valve.

Further advantageous embodiments, described leakage fluid dram place is provided with temperature-sensing valve.

Further advantageous embodiments, described liquid outlet connects with steam-water separator.

Further advantageous embodiments, described leakage fluid dram is connected with cooling bath by temperature-sensing valve, and cooling bath connects with agitator tank.

Further advantageous embodiments, sulfur melting kettle top is provided with and adds hot jacket, and this heating puts and is provided with air intake, liquid outlet, and air intake place is provided with temperature-sensing valve.

This utility model is that the sulfur cream after the clear liquid in sulfur foam is filtered by centrifuge is sent in sulfur melting kettle, finally produces liquid sulfur and discharges in discharging opening; It is recycled from leakage fluid dram clear liquid out, is recycled from liquid outlet water vapour out and/or condensed water. After machine has filtered clear liquid by centrifugation, doctor solution content contained in sulfur cream is little; Entering into heat temperature raising in sulfur melting kettle after sulfur cream dilute, the secondary salt amount produced in sulfur melting kettle is little, and the corrosion of equipment is substantially alleviated, and the generation clear liquid in sulfur melting kettle returns wet desulfurization system and fills new utilization, thus being effectively reduced environmental pollution.

It addition, with 40,000 Nm per hour³Sulfur-bearing 5g/m in tolerance, coal gas³The wet desulfurization system of coke-oven plant be example, have an existing sulfur recovery system, sulfur melting kettle every day discharges doctor solution 20m for controlling secondary salt content and not exceeding standard³, handling is every side doctor solution 130 yuan, then need every day to pay doctor solution handling 2600 yuan, then join 20m³System cost mended by doctor solution is about 1200 yuan, and therefore every day pays about 3800 yuan, runs 300 days by annual, altogether expenditure 1,140,000 yuan; Producing sulfur amount to calculate by sulfur content 70%, produce 40000*0.005*24*0.7=3.36t every day, coke-oven plant only sells 300 yuan due to the low sulfur per ton of sulfur purity, and every day, sulfur can sell about 1,000 yuan, then can take in 300,000 yuan every year; Actual wet desulphurization pays 1,140,000 yuan-30 ten thousand yuan=840,000 yuan. With sulfur recovery system of the present utility model owing to major part doctor solution is returned in wet desulfurization system not past high temperature, greatly reduce the generation of secondary salt;Only need every day to discharge doctor solution 10m³, then need every day to pay doctor solution handling 1200 yuan, mend 10m³Doctor solution cost is about 600 yuan, and therefore every day pays about 1800 yuan, runs 300 days by annual, altogether expenditure 540,000 yuan; Owing to produced sulfur quality is good, about 500 yuan of sulfur per ton, every day, sulfur can sell about 1600 yuan, then can take in 480,000 yuan every year; This utility model actual expenses 540,000 yuan 480,000 yuan=60,000 yuan. This utility model just can cut down expenses 840,000 yuan 60,000 yuan=780,000 yuan for coke-oven plant, reduces production cost, improves productivity effect.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Detailed description of the invention

In conjunction with accompanying drawing, this utility model is described in further detail, centrifuge 1 connects with agitator tank 2, mode of communicating can pass through the sulfur cream that manually or mechanically centrifuge 1 is produced by equipment and be transported in agitator tank 2, the sulfur cream open height that goes out of centrifuge 1 can also being located at agitator tank charging aperture top, centrifuge 1 can select horizontal centrifuge; Enter in agitator tank 2 by pipeline by sulfur cream; Agitator tank 2 is connected with the charging aperture 5 of sulfur melting kettle 8 by screw pump 3; Control to make the sulfur being deposited on sulfur melting kettle bottom be melt into liquid sulfur for temperature can be passed through, under add the air intake place of hot jacket and be connected to temperature-sensing valve 16, leakage fluid dram 6 is connected with cooling bath 14 by temperature-sensing valve 7, and cooling bath 14 is connected with agitator tank 2 by pipeline, and liquid outlet 9 connects with steam-water separator 10. For ease of when bringing into operation, improving rapidly the temperature in sulfur melting kettle, sulfur melting kettle top is provided with and adds hot jacket, above add hot jacket with under add hot jacket and do not connect, upper heating is overlapped air inlet place and is provided with temperature-sensing valve 4.

A kind of sulfur recovery system produces the method for sulfur,

A. separating: the sulfur foam of the sulfur-bearing 5%-15% flowed out in wet desulfurization system enters centrifuge, the clear liquid that centrifuge 1 produces after being processed by sulfur foam is transported in the lean liquid bath of desulphurization system and recycles, and the sulfur cream separated is transported in agitator tank 2;

B. stirring: by water injection pipe toward adding water in agitator tank 2 or from after cooling bath 14 clear liquid out, is diluted to the sulfur mud that sulfur content is 30% 50% uniformly by sulfur cream;

C. molten sulfur: sulfur mud screw pump 3 is transported in sulfur melting kettle 8 by charging aperture, the temperature-sensing valve 16 at lower heating set air intake place is opened and is passed into steam heating intensification; When the temperature of sulfur melting kettle 8 bottom is lower than 130 DEG C, the temperature-sensing valve 16 at lower heating set air intake place automatically turns on, and when the temperature of sulfur melting kettle bottom is higher than 150 DEG C, the temperature-sensing valve 16 at lower heating set air intake place is automatically switched off; When sulfur melting kettle upper temp is lower than 75 DEG C, the temperature-sensing valve 7 at leakage fluid dram place is automatically switched off; When sulfur melting kettle upper temp is higher than 95 DEG C, the temperature-sensing valve 7 at leakage fluid dram place automatically turns on, and the liquid sulfur formed in sulfur melting kettle 8 bottom is flowed into by thermal insulation valve 11 to connect in sulfur box 12 and is sulfur finished product after cooling;

D. reclaim: after the temperature-sensing valve 7 at leakage fluid dram 6 place is opened, clear liquid in sulfur melting kettle 8 is discharged from leakage fluid dram 6, the clear liquid produced in sulfur melting kettle 8 enters cooling in cooling bath 14 through the temperature-sensing valve 7 of leakage fluid dram 6, leakage fluid dram place, under clear liquid cooling tube 13 cooling effect in cooling bath 14 after cooling, the clear liquid that cooled groove 14 processed enter in agitator tank 2 by again with, clear liquid unnecessary in cooling bath 14 can pass through pipeline and enter recycling in the lean liquid bath of desulphurization system; Recycling after steam-water separator 10 separates is entered from liquid outlet 9 water vapour out and/or condensed water.

Further preferred embodiments, a kind of sulfur recovery system production method,

C. molten sulfur: sulfur mud screw pump 3 is transported in sulfur melting kettle 8 by charging aperture, the temperature-sensing valve 16 outside lower heating set air intake is opened and is passed into steam heating intensification; When the temperature of sulfur melting kettle 8 bottom is lower than 130 DEG C, the temperature-sensing valve 16 that air intake is overlapped in the temperature-sensing valve 4 of upper heating set air intake, lower heating automatically turns on, and when the temperature of sulfur melting kettle 8 bottom is higher than more than 130 DEG C, the temperature-sensing valve 4 of upper heating set air intake is automatically switched off; When the temperature of sulfur melting kettle bottom is lower than 130 DEG C, the temperature-sensing valve 16 that air intake is overlapped in the temperature-sensing valve 4 at upper heating set air intake place, lower heating automatically turns on; When the temperature of sulfur melting kettle bottom is higher than 150 DEG C, the temperature-sensing valve 16 at lower heating set air intake place is automatically switched off; When sulfur melting kettle upper temp is lower than 75 DEG C, the temperature-sensing valve 7 at leakage fluid dram place is automatically switched off; When sulfur melting kettle upper temp is higher than 95 DEG C, the temperature-sensing valve 7 at leakage fluid dram place automatically turns on, and the liquid sulfur formed in sulfur melting kettle bottom is flowed into by thermal insulation valve 11 to connect in sulfur box 12 and is sulfur finished product after cooling;

This utility model can be interval sulfur melting system, it is possible to for continuous sulfur melting system, the clear liquid of generation can recycle, it is possible to effectively reduces the generation of secondary salt. The concentration of sulfur mud is rare thick can arbitrarily be regulated, and has process sulfur ability big, and sulfur yield is high, and sulfur quality is good; By temperature-sensing valve control, it is possible to effectively reduce steam consumption.

The above is only preferred embodiment of the present utility model, and protection domain of the present utility model is not limited merely to above-described embodiment, and all technical schemes belonged under this utility model thinking belong to protection domain of the present utility model. It should be pointed out that, for those skilled in the art, without departing from the some improvements and modifications under this utility model principle premise, also should be regarded as protection domain of the present utility model.

Claims

1. a sulfur recovery system, include centrifuge, sulfur melting kettle, agitator tank, screw pump, sulfur melting kettle includes charging aperture, discharging opening, leakage fluid dram, is located at air intake and liquid outlet that the heating of sulfur melting kettle bottom puts, agitator tank is connected with charging aperture by screw pump, it is characterised in that: described air intake place is provided with temperature-sensing valve.

2. a kind of sulfur recovery system according to claim 1, it is characterised in that: described leakage fluid dram place is provided with temperature-sensing valve.

3. a kind of sulfur recovery system according to claim 1 and 2, it is characterised in that: described liquid outlet connects with steam-water separator.

4. a kind of sulfur recovery system according to claim 3, it is characterised in that: described leakage fluid dram is connected with cooling bath by temperature-sensing valve, and cooling bath connects with agitator tank.

5. a kind of sulfur recovery system according to claim 4, it is characterised in that: sulfur melting kettle top is provided with and adds hot jacket, and this heating puts and is provided with air intake, liquid outlet, and air intake place is provided with temperature-sensing valve.