CN210229637U

CN210229637U - Useless sulphur of carrying of desulfurization danger carries salt system

Info

Publication number: CN210229637U
Application number: CN201921059433.9U
Authority: CN
Inventors: Yinde Zhao; 赵引德
Original assignee: Langfang Jin Sheng Energy Saving Technology Service Co Ltd
Current assignee: Langfang Jin Sheng Energy Saving Technology Service Co Ltd
Priority date: 2019-07-09
Filing date: 2019-07-09
Publication date: 2020-04-03
Anticipated expiration: 2029-07-09

Abstract

The utility model discloses a useless sulphur of desulfurization danger carries salt system, include agitator, scrubbing tower, pressurization coarse distillation tower, filter, flash evaporator, first crystallizer, centrifuge, active carbon adsorption filter, thick main salt vacuum evaporator, second crystallizer, centrifuge, dissolving kettle, active carbon filter, smart main salt evaporimeter and the third crystallizer that concatenates in order according to the connection order of pipeline; the utility model discloses simple structure easily disassembles the maintenance, and the operation is stable, begins to handle from sulphur foam to oxidation has been carried out sulphur foam and sulphite, more is favorable to the separation of impurity in the foam, reduces the energy consumption load and the equipment investment of carrying salt, can follow and draw sulphur and thiocyanate in the desulfurization waste liquid to the at utmost, and the product purity of drawing is high, reduces environmental pollution, avoids site environment to operating personnel's health influence.

Description

Useless sulphur of carrying of desulfurization danger carries salt system

Technical Field

The utility model relates to a useless resourceful treatment field of danger relates to a useless sulphur of desulfurization danger carries salt system.

Background

Among the prior art, the sulfur mud danger that produces in the hydrogen sulfide process that desorption gas through wet oxidation method is useless and the surplus contains salt danger useless the difficult problem that solves of coke-oven plant always, and simple substance sulphur content is lower in the traditional single-effect sulphur extraction technology, and when the desulfurization waste liquid is carried the salt alone, suspended sulphur, pitch, burnt ash, etc. that often contain in the desulfurization waste liquid impurity, the purity of salt can not reach the product index, and it is relatively poor to extract the effect, and single-effect sulphur extraction, salt extraction equipment area are big, have increaseed the running cost of enterprise.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem, a useless sulphur of carrying of desulfurization danger carries salt system is provided.

In order to achieve the above purpose, the utility model adopts the following technical proposal:

the utility model provides a useless sulphur of desulfurization danger carries sulphur and carries salt system, includes agitator, scrubbing tower, pressurization coarse distillation tower, filter, flash evaporator, first crystallizer, first centrifuge, active carbon adsorption filter, thick main salt vacuum evaporator, second crystallizer, second centrifuge, dissolving kettle, active carbon filter, smart main salt evaporimeter and the third crystallizer that concatenates in order according to the connection order of pipeline.

As a limitation of the utility model, an oxidation kettle is connected between the stirrer and the washing tower and connected with the washing tower through a pipeline.

As another limitation of the utility model, the tower kettle of the pressurized coarse distillation tower is connected with the atmospheric distillation tower through a pipeline.

As a further limitation of the utility model, the atmospheric distillation tower is connected with the sulfur granulator through a pipeline.

Due to the adoption of the technical scheme, the utility model discloses the beneficial effect who gains as follows:

1. the sulfur foam is treated, and the sulfur foam and the sulfite are oxidized by the oxidation kettle, so that the separation of impurities in the foam is facilitated, and the energy consumption load and equipment investment of subsequent salt extraction are reduced;

2. the structure is simple, the equipment is easy to disassemble and maintain, the double-lifting efficiency is high, and the occupied area is small;

3. the system can realize the functions of extracting sulfur and salt at the same time, has short period, high purity of extracted sulfur and salt, high extraction efficiency compared with single-effect extraction and more sufficient resource utilization of waste.

The utility model is suitable for a useless and surplus salt danger that contain of sulphur mud danger to producing through the hydrogen sulfide technology in the wet oxidation desorption gas is useless carries sulphur and carries salt.

The invention will be described in further detail with reference to the drawings and specific embodiments.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

In the figure: 1 stirrer, 2 washing tower, 3 pressurizing coarse distillation tower, 4 filter, 5 flash evaporation evaporator, 6 first crystallizer, 7 first centrifuge, 8 active carbon adsorption filter, 9 coarse main salt vacuum evaporator, 10 second crystallizer, 11 second centrifuge, 12 dissolving kettle, 13 active carbon filter, 14 refined main salt evaporator, 15 third crystallizer, 16 oxidation kettle and 17 normal pressure distillation tower.

Detailed Description

In the following examples, the devices used were all the existing devices unless otherwise specified, and the connection relationships used were all the existing connection relationships unless otherwise specified.

Embodiment of the system for extracting sulfur and salt from desulfurization hazardous waste

The embodiment is a system for extracting sulfur and salt from hazardous desulfurization waste, and as shown in fig. 1, the system comprises a stirrer 1, an oxidation kettle 16, a washing tower 2, a pressurizing rough distillation tower 3, a filter 4, a flash evaporation evaporator 5, a first crystallizer 6, a first centrifuge 7, an active carbon adsorption filter 8, a rough main salt vacuum evaporator 9, a second crystallizer 10, a second centrifuge 11, a dissolving kettle 12, an active carbon filter 13, a fine main salt evaporator 14 and a third crystallizer 15 which are connected in series in sequence according to the connection sequence of pipelines.

The tower kettle of the pressurizing rough distillation tower 3 is connected with the atmospheric pressure rectifying tower 17 through a pipeline, the atmospheric pressure rectifying tower 17 is connected with a sulfur granulator through a pipeline, namely, the bottom of the kettle of the pressurizing rough distillation tower 3 after rough distillation is heavy component crude sulfur, the heavy component crude sulfur enters the atmospheric pressure rectifying tower 17 through a pipeline to be rectified again to generate high-purity sulfur, the high-purity sulfur enters the sulfur granulator through a pipeline to be granulated to form granulated sulfur, and the granulated sulfur can be sold and used for the second time after being packaged.

The process flow of the utility model is as follows:

the treatment of the desulfurization hazardous waste is started from sulfur foam, the sulfur foam is sent into an oxidation kettle 16 in which a catalyst is put in advance through a pipeline after being smashed by a stirrer 1, the sulfur foam is re-oxidized in the oxidation kettle 16, and the sulfite is simultaneously oxidized to facilitate the separation of impurities in the sulfur foam, and reduces the energy consumption and equipment investment of subsequent salt extraction, the material in the oxidation kettle 16 is pumped into a washing tower 2 through a desulphurization liquid circulating pump for washing, the particle impurities in the sulfur foam are removed, the tar impurities are separated, the separated material enters a pressurizing rough distillation tower 3, and (3) carrying out sulfur-liquid separation to ensure that the waste liquid from which the salt is extracted does not contain suspended sulfur, the sulfur does not contain salt and a desulfurizer, feeding the crude sulfur in the tower kettle of the pressurized coarse distillation tower 3 into the normal-pressure rectifying tower 17 through a pipeline for secondary distillation to obtain the sulfur with the purity of more than 99.5%, and feeding the sulfur into a sulfur granulator through a pipeline for granulation to generate sulfur particles for reuse. The salt extracting liquid flowing out from the top of the pressurizing coarse distillation tower 3 is filtered by a filter 4 and then enters a flash evaporation evaporator 5 for flash evaporation, the redundant energy consumption of the pressurizing coarse distillation tower 3 is effectively utilized, the cost is reduced, the material coming out from the flash evaporation evaporator 5 enters a centrifugal machine 7 through a first crystallizer 6, the centrifugal machine 7 is a closed continuous device which is provided with a spiral conveyer and a hot air drying device, the salt can be prevented from absorbing moisture and getting damp in the air, the material separated from the byproduct salt is pumped into an active carbon adsorption filter 8 through a circulating pump, the filter liquid is directly pumped into a coarse main salt vacuum evaporator 9, the usage amount of the active carbon is reduced in the process, the material sequentially passes through a second crystallizer 10 and the centrifugal machine 11 through pipelines to be centrifuged, the solid-liquid separation is realized, the separated coarse salt desulfurization waste liquid can be used for reforming and upgrading the flue gas desulfurization, and is used as an alkali source for the flue gas desulfurization, meanwhile, the flue, the investment cost is reduced, the crude salt obtained by separation is dissolved in a dissolving kettle 12, the dissolved crude salt is pumped into an active carbon filter 13 through a circulating pump, and the filtered material sequentially enters a refined main salt evaporator 14 and a third crystallizer 15 to obtain thiocyanate with the purity of more than 98.7 percent.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a useless sulphur of carrying of desulfurization danger carries salt system which characterized in that: the device comprises a stirrer, a washing tower, a pressurizing coarse distillation tower, a filter, a flash evaporation evaporator, a first crystallizer, a first centrifugal machine, an active carbon adsorption filter, a coarse main salt vacuum evaporator, a second crystallizer, a second centrifugal machine, a dissolving kettle, an active carbon filter, a fine main salt evaporator and a third crystallizer which are sequentially connected in series according to the connection sequence of pipelines.

2. The system for extracting sulfur and salt from hazardous waste according to claim 1, wherein: an oxidation kettle is connected between the stirrer and the washing tower through a pipeline.

3. The system for extracting sulfur and salt from hazardous waste according to claim 1, wherein: and the tower kettle of the pressurized coarse distillation tower is connected with the atmospheric distillation tower through a pipeline.

4. The system for extracting sulfur and salt from hazardous waste in claim 3, wherein: the atmospheric distillation tower is connected with the sulfur granulator through a pipeline.