CN206266223U - A kind of improved sulfur recovery system - Google Patents

Abstract

A kind of improved sulfur recovery system of the utility model, including centrifuge, agitator tank, cooling bath and sulfur melting kettle, sulfur melting kettle includes kettle, feed pipe, discharging opening, leakage fluid dram, conic distributor, located at kettle circumferential upper heating mantle and lower heating mantle, heating mantle is provided with air intake and liquid outlet, centrifuge is connected by pipeline with agitator tank, and agitator tank is connected by pipeline with the feed pipe of sulfur melting kettle, and cooling bath is connected with the leakage fluid dram and agitator tank of sulfur melting kettle respectively by pipeline；Temperature-sensing valve is installed on the air inlet of the upper heating mantle of sulfur melting kettle and lower heating mantle；The liquid outlet of the lower heating mantle of sulfur melting kettle is connected with steam-water separator.The utility model can effectively control secondary salt yield in clear liquid, prevent to clear liquid pollution on the environment outward, reduce corrosion of the secondary salt to equipment, extension device service life；Water vapour and condensed water are capable of achieving to recycle after being separated through steam-water separator, have saved the usage amount of heating steam, reduce production cost, realize heat recovery.

Description

A kind of improved sulfur recovery system

Technical field

The utility model is related to a kind of improved sulfur recovery system, belongs to elemental sulfur recovery technology field.

Background technology

In China's coal chemical industry, wet desulfurization system because its low cost, it is easy to operate be widely adopted.Wet desulphurization system The doctor solution and sulphur foam mixture of the sulfur-bearing 5%-15% flowed out in system carry out sulfur recovery by sulfur melting kettle；Sulfur melting kettle includes kettle Body, feed pipe, discharging opening, leakage fluid dram, conic distributor, kettle middle and lower part are provided with heating mantle, and heating mantle is provided with air intake And liquid outlet；The doctor solution and sulphur foam mixture of sulfur-bearing 5%-15% drain into kettle after the feed pipe mouth of pipe by conic distributor The heating of sulfur melting kettle middle part is entered back into the gap formed between conic distributor, bubble breakup is made after heating, formed after division Elemental sulfur sink to gathering sulfur melting kettle bottom and flow out sulfur melting kettle through discharging opening, the clear liquid of formation passes through after rising to sulfur melting kettle top Flowed into desulphurization system again after the leakage fluid dram outflow on sulfur melting kettle top and be processed.Existing sulfur recovery system directly takes off wet method The doctor solution and sulphur foam mixture flowed out in sulphur system are squeezed into sulfur melting kettle, and the clear liquid amount of generation is far longer than system and uses by oneself Amount, unnecessary clear liquid is nowhere discharged, and outer row necessarily causes environmental pollution；And when clear liquid temperature is more than 50 DEG C, can give birth at double Secondary salt is produced, the rising of secondary salt content can make equipment corrosion, block pipeline valve, decline desulfuration efficiency, and regeneration effect is poor, blebbing Foam inefficient, causes system suspension sulphur to raise and block filler, when secondary salt is too high sulfur melting kettle melt out sulphur reduce it is tacky or into pureed Deng；The common practice for solving problems is that a large amount of discharge opeings go to reduce content of the secondary salt in doctor solution, so pollutes ring Border, two is excessive to cause various components in doctor solution to consume, and a large amount of discharge opeings are needed to ensure doctor solution component, then mends again Fill new liquid, cause production cost to raise；Meanwhile, heating mantle is heated using vapor, and unnecessary water vapour is directly by going out liquid Mouth discharge, causes the waste of the energy.

Chinese patent " a kind of sulfur melting kettle of fusible sulphur mud "（The patent No.：201420154214X）Heating mantle is divided into and is added Hot jacket and lower heating mantle, realize clear liquid temperature less than 50 DEG C, so as to reduce the product of secondary salt by controlling upper and lower heating mantle respectively It is raw；The patent simply reduces secondary salt amount in clear liquid to a certain extent, however it remains produce the problem of clear hypervolia, and does not have Solve the problems, such as that directly outer row wastes the energy to unnecessary water vapour, and up and down the control of heating mantle heats temperature exist it is larger partially Difference.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of improved sulfur recovery system, is effectively reduced clear liquid Yield, realize to the precise control of sulfur melting kettle jacket temperature, reduce the generation of secondary salt in clear liquid, extension device uses the longevity Life, while realizing the recycling of unnecessary water vapour, energy saving.

Solve above-mentioned technical problem technical scheme be：

A kind of improved sulfur recovery system, including sulfur melting kettle, the sulfur melting kettle include kettle, feed pipe, discharging opening, discharge opeing Mouth, conic distributor, located at kettle circumferential upper heating mantle and lower heating mantle, heating mantle is provided with air intake and liquid outlet；Its Improvements are：It also includes centrifuge, agitator tank and cooling bath, and centrifuge is connected by pipeline with agitator tank, and agitator tank leads to Piping is connected with the feed pipe of sulfur melting kettle, and cooling bath is connected with the leakage fluid dram and agitator tank of sulfur melting kettle respectively by pipeline；Institute State and temperature-sensing valve is installed on the upper heating mantle of sulfur melting kettle and the air inlet of lower heating mantle；The lower heating mantle of the sulfur melting kettle goes out liquid Mouth is connected with steam-water separator.

Above-mentioned a kind of improved sulfur recovery system, it also includes screw pump, and screw pump is installed on connection agitator tank and melts On the pipeline of sulphur kettle feed pipe；Temperature-sensing valve is installed on pipeline between the leakage fluid dram and cooling bath of the sulfur melting kettle.

The course of work of the present utility model is：

Doctor solution and sulphur foam mixture the feeding centrifugation of the sulfur-bearing 5%-15% that will be flowed out in wet desulfurization system first Be transported to the clear liquid produced after the treatment of sulphur foam in the poor liquid bath of desulphurization system and recycle by machine, centrifuge, the sulphur cream separated Entered in agitator tank by pipeline；Sulphur cream is equably diluted to the sulphur mud that sulfur content is 30% -50% to being added water in agitator tank； Sulphur mud is transported in sulfur melting kettle by screw pump, and the temperature-sensing valve at lower heating mantle air intake is opened and is passed through steam heat temperature raising；When When the temperature of sulfur melting kettle bottom is less than 130 DEG C, the temperature-sensing valve at lower heating mantle air intake is opened greatly, when the temperature of sulfur melting kettle bottom is high When 150 DEG C, the temperature-sensing valve at lower heating mantle air intake is turned down；When sulfur melting kettle upper temp is less than 75 DEG C, at leakage fluid dram Temperature-sensing valve is closed, and reduces the outer discharge capacity of clear liquid, and when sulfur melting kettle upper temp is higher than 95 DEG C, the temperature-sensing valve at leakage fluid dram is opened greatly, Increase the outer discharge capacity of clear liquid；It is flowed into connect by discharging opening in the liquid sulfur that sulfur melting kettle bottom is formed and is sulphur in sulphur box after cooling Sulphur finished product；The clear liquid discharged from leakage fluid dram enters cooling in cooling bath, under cooling tube cooling effect of the clear liquid in cooling bath Entered into after cooling in agitator tank and be re-circulated utilization, unnecessary clear liquid can enter desulphurization system by pipeline in cooling bath Recycled in poor liquid bath；The unnecessary water vapour and condensed water discharged through the liquid outlet of lower heating mantle are real after being separated through steam-water separator Now recycle.

The beneficial effects of the utility model are：

The utility model carries out centrifuge separation and agitator tank dilution to the sulphur foam flowed out in wet desulfurization system first Stirring, can be greatly decreased the yield of clear liquid, so as to reduce the yield of secondary salt；Temperature-sensing valve on upper and lower heating mantle air intake It is capable of achieving to be precisely controlled heating-up temperature, further secondary salt yield in control clear liquid, has prevented outer to clear liquid and make environment Into pollution, reduce corrosion of the secondary salt to equipment, extension device service life；The controllable clear liquid of temperature-sensing valve installed on leakage fluid dram Discharge rate, the clear liquid of discharge recycles into agitator tank after being cooled down through cooling bath, discharged through the liquid outlet of lower heating mantle Unnecessary water vapour and condensed water are realized recycling after being separated through steam-water separator, have saved the usage amount of heating steam, reduce Production cost, realizes heat recovery.

Brief description of the drawings

Fig. 1 is the utility model schematic diagram；

Marked in figure：Kettle 1, feed pipe 2, discharging opening 3, leakage fluid dram 4, conic distributor 5, upper heating mantle 6, lower heating Set 7, air intake 8, liquid outlet 9, centrifuge 10, agitator tank 11, cooling bath 12, pipeline 13, temperature-sensing valve 14, steam-water separator 15, Screw pump 16, connect sulphur box 17.

Specific embodiment

Fig. 1 shows, a kind of improved sulfur recovery system of the utility model, including centrifuge 10, agitator tank 11, cooling bath 12nd, screw pump 16 and sulfur melting kettle, sulfur melting kettle include kettle 1, feed pipe 2, discharging opening 3, leakage fluid dram 4, conic distributor 5, are located at Kettle 1 outer circumferential upper heating mantle 6 and lower heating mantle 7, are provided with air intake 8 and go out respectively in upper heating mantle 6 and lower heating mantle 7 Liquid mouthful 9；Centrifuge 10 is connected by pipeline 13 with agitator tank 11, and agitator tank 11 is connected by pipeline 13 with the feed pipe 2 of sulfur melting kettle Connect, screw pump 16 is installed on the pipeline of connection agitator tank 11 and sulfur melting kettle feed pipe 2, for that will separate and stir through centrifuge 10 Mix during the sulphur foam after the dilution stirring of tank 11 pumps into sulfur melting kettle；Cooling bath 12 by pipeline 13 respectively with the leakage fluid dram 4 of sulfur melting kettle Connected with agitator tank 11；Temperature-sensing valve 14 is installed on the air inlet 8 of the upper heating mantle 6 of sulfur melting kettle and lower heating mantle 7, for realizing Temperature is precisely controlled in sulfur melting kettle；The liquid outlet 9 of the lower heating mantle 7 of sulfur melting kettle is connected with steam-water separator 15, for realizing The repetitive cycling of unnecessary water vapour and condensed water is utilized；Installed on pipeline 13 between the leakage fluid dram 4 and cooling bath 12 of sulfur melting kettle There is temperature-sensing valve 14, the outer row for controlling clear liquid.

The course of work of the present utility model is：

Doctor solution and sulphur foam mixture the feeding centrifugation of the sulfur-bearing 5%-15% that will be flowed out in wet desulfurization system first Be transported to the clear liquid produced after the treatment of sulphur foam in the poor liquid bath of desulphurization system and recycle by machine 10, centrifuge 10, separates Sulphur cream is entered in agitator tank 11 by pipeline；It is 30% -50% that sulphur cream is equably diluted into sulfur content to being added water in agitator tank 11 Sulphur mud；Sulphur mud is transported in sulfur melting kettle by screw pump 16, and the temperature-sensing valve 14 at the air intake 8 of lower heating mantle 7 is opened and is passed through Steam heat temperature raising；When the temperature of sulfur melting kettle bottom is less than 130 DEG C, the temperature-sensing valve 14 at the air intake 8 of lower heating mantle 7 is opened Greatly, when the temperature of sulfur melting kettle bottom is higher than 150 DEG C, the temperature-sensing valve 14 at the air intake 8 of lower heating mantle 7 is turned down；Work as sulfur melting kettle When upper temp is less than 75 DEG C, the temperature-sensing valve 14 at leakage fluid dram 4 is closed, and the outer discharge capacity of clear liquid is reduced, when sulfur melting kettle upper temp During higher than 95 DEG C, the temperature-sensing valve 14 at leakage fluid dram 4 opens the outer discharge capacity for increasing clear liquid greatly；In the liquid sulfur that sulfur melting kettle bottom is formed It is flowed into connect by discharging opening 3 and is sulphur finished product in sulphur box 17 after cooling；The clear liquid discharged from leakage fluid dram 4 enters cooling bath Cooling in 12, enters into agitator tank 11 after being cooled down under cooling tube cooling effect of the clear liquid in cooling bath 12 and is re-circulated profit With unnecessary clear liquid can be entered in the poor liquid bath of desulphurization system by pipeline and be recycled in cooling bath 12；Through going out for lower heating mantle 7 The unnecessary water vapour and condensed water of the discharge of liquid mouthful 9 are realized recycling after being separated through steam-water separator 15.

Claims (2)

1. a kind of improved sulfur recovery system, including sulfur melting kettle, the sulfur melting kettle includes kettle（1）, feed pipe（2）, discharging opening （3）, leakage fluid dram（4）, conic distributor（5）, located at kettle（1）Circumferential upper heating mantle（6）With lower heating mantle（7）, heating mantle It is provided with air intake（8）And liquid outlet（9）；It is characterized in that：It also includes centrifuge（10）, agitator tank（11）And cooling bath （12）, centrifuge（10）By pipeline（13）With agitator tank（11）Connection, agitator tank（11）By pipeline（13）With sulfur melting kettle Feed pipe（2）Connection, cooling bath（12）By pipeline（13）Respectively with the leakage fluid dram of sulfur melting kettle（4）And agitator tank（11）Connection； The upper heating mantle of the sulfur melting kettle（6）With lower heating mantle（7）Air inlet（8）On temperature-sensing valve is installed（14）；The sulfur melting kettle Lower heating mantle（7）Liquid outlet（9）With steam-water separator（15）Connection.

2. a kind of improved sulfur recovery system as claimed in claim 1, it is characterised in that：It also includes screw pump（16）, spiral shell Bar pump（16）It is installed on connection agitator tank（11）With sulfur melting kettle feed pipe（2）Pipeline（13）On；The leakage fluid dram of the sulfur melting kettle （4）With cooling bath（12）Between pipeline（13）On temperature-sensing valve is installed（14）.