CN206970236U - A kind of semi-dry desulfurizing process accessory substance processing unit - Google Patents
A kind of semi-dry desulfurizing process accessory substance processing unit Download PDFInfo
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- CN206970236U CN206970236U CN201720799889.3U CN201720799889U CN206970236U CN 206970236 U CN206970236 U CN 206970236U CN 201720799889 U CN201720799889 U CN 201720799889U CN 206970236 U CN206970236 U CN 206970236U
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- desulfurization
- gypsum
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- ash silo
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Abstract
The utility model belongs to solid wastes recycling field, discloses a kind of semi-dry desulfurizing process accessory substance processing unit, including storage metering units, slurrying unit, pressure oxidation unit and gypsum dehydration unit.The beneficial effects of the utility model are：Using the technical solution of the utility model, ash that desulfurization can be given up transforms into the higher solid gypsum of purity, can greatly extend the utilization orientation of the useless ash of desulfurization, popularization and popularization to semi-dry desulfurizing process bring profound significance.
Description
Technical field
The utility model belongs to solid wastes recycling field, is related to a kind of semi-dry desulfurizing process accessory substance processing unit.
Background technology
Chinese Ministry of Environmental Protection " 12 ", which plans, has worked out the Target of Total Pollutant Amount Control of sulfur dioxide, by 2015, the row of sulfur dioxide
10% will be reduced than 2010 by putting total amount.This is a severeer task.For current flue gas desulfurization improvement field,
Because various wet desulfurizing process are required to the certain waste water of quantitative outer row to ensure the ionic equilibrium of desulphurization system, and need
The waste component of discharge is extremely complex, and intractability is very big, and desulfuration waste water treatment process supporting at present is substantially simply to useless
Suspension and part heavy metal ion in water are handled, and other complicated ions inside waste water are done without good processing
The chlorion of high concentration contained by method, especially waste water without good solution, therefore the waste water after handling have no idea into
Row reuse, substantially it is used as pressing dirt to use.And semi-dry desulfurizing process is because without discharge of wastewater, therefore receive extensive
Concern, but the maximum obstruction of the current application prospect of semi-dry desulfurizing process is the place for the useless ash of accessory substance desulfurization that desulphurization system changes
Manage, the manufacturing enterprise of the useless ash of desulfurization can be especially digested in some remote districts, the no cement plant of surrounding etc., the useless ash of desulfurization is deposited
Nowhere stacking, and the useless ash of substantial amounts of airborne dust occurs in strong wind weather, influenceing very much the environment around plant area.
At present, increasingly stricter with environmental requirement, traditional wet desulfurizing process is because of wet stack problem,
Cause being discontented with for the public, especially preferably regional in some environment, the billowing steam of wet stack prints to the sense organ of people
As excessively poor, along with understanding of the public to environment protection treating is not in place, most of common people think the white water that smoke stack emission comes out
Mist is also one of pollutant.For semidry method because its exhaust temperature is high, chimney breast is hardly visible color, while semi-dry desulphurization work
The efficiency of skill has also substantially achieved the level of wet desulfurizing process, and therefore, field, semi-dry desulphurization are administered in following flue gas desulfurization
Technique will progressively substitute traditional wet desulfurizing process.But the desulfurization of semi-dry desulfurizing process is given up, grey process problem is always
It is one of major reason for limiting semidry method application, develops a kind of useless ash of succinct reliably processing semidry method, and desulfurization is useless grey
The new technology of recycling by be promote semi-dry desulphurization system application key factor.
Semi-dry desulphurization is useless grey because the difference of its technological principle, the bulk composition of the useless ash of desulfurization have larger difference, wherein
The content highest of active lime in the useless ash of the desulfurization of rotating spraying sulfur removal technology (SDA), typically 20~30%, (quality percentage is dense
Degree), the lime in the useless ash of desulfurization belongs to utilizable one kind, other several semi-dry desulfurizing process such as recirculating fluidized beds, new
Active lime content in type integrated desulfurization technique (NID), dense flow absorber sulfur removal technology is a kind of recently new typically 15~18%
Active lime content can control the useless ash in 8~10%, these sulfur removal technologies in the dynamic response area method sulfur removal technology of type
Current major part is intended for cement plant and used as cement slurry, and also some is directly incorporated into grain slag or boiler fly ash China and foreign countries
Transportation and sales are sold.When plant area does not nearby have cement plant, when the useless ash quantity of desulfurization is again bigger, the utilization of the useless ash of desulfurization just must
It need draw attention, it is impossible to cause secondary pollution problem because of the accumulation of the useless ash of desulfurization.
The content of the invention
The utility model will solve the problems, such as the recycling recycling that semi-dry desulphurization gives up grey.
In order to solve the above-mentioned technical problem, the utility model discloses a kind of processing of semi-dry desulfurizing process accessory substance to fill
Put, including storage metering units, slurrying unit, pressure oxidation unit and gypsum dehydration unit；
It is described storage metering units include feeding tube, desulfurization give up ash silo, weighing sensor, push-pull valve, star feeder with
And conveying worm；The closed tank truck of one end connection peripheral hardware of the feeding tube, the charging aperture of the useless ash silo of other end connection desulfurization；
The useless ash silo top of the desulfurization is staving, and bottom is centrum, and desulfurization is given up, and ash silo is interior to be provided with weighing sensor, and the bottom of centrum is set
Push-pull valve；The discharging opening of the useless ash silo of desulfurization is formed under the push-pull valve opening, the discharging opening connection star feeder
Feed end；The star feeder is used for uniform discharge, and its discharge end connects the feed end of conveying worm, the helical feed
The discharge end connection slurrying unit of machine；
The slurrying unit includes pulping tank, slurry mixer and Pulp pump；Slurry mixer connects motor, and deeply
In pulping tank, the pulping tank is additionally provided with air inlet and grout outlet, and oxidation unit is forced in air inlet connection, and grout outlet passes through pipeline
Connect Pulp pump；
Oxidation unit is forced to include oxidation fan and corresponding pipeline composition, the oxygen of oxidation fan bulging passes through pipeline
Connect the air inlet of pulping tank and blast in pulping tank；
The gypsum dehydration unit includes gypsum cyclone, vacuum hydroextractor and gypsum storehouse；Gypsum cyclone is used to receive
Collect the slurry that is pumped into by Pulp pump, and after carrying out primary dewatering to slurry, the concentration slurry of formation is delivered to vacuum hydroextractor
Carry out second dehydration；The vacuum hydroextractor includes vacuum chamber, gas-liquid separator and water ring vacuum pump；In the vacuum chamber
Put belt conveyor wheel, connection gypsum cyclone at the top of vacuum chamber, the concentration slurry formed in gypsum cyclone is along opening stream
To the belt of belt conveyor wheel head end, the bottom of vacuum chamber connects gas-liquid separator by filtrate backflow main pipe, and filtrate is returned
Stream main pipe, gas-liquid separator, water ring vacuum pump sequentially connect；The gypsum warehouse compartment is in the end of belt conveyor wheel；
The present apparatus is turned waste into wealth rationally using the problem of caused byproduct can not recycle after semi-dry desulphurization,
By way of forcing to aoxidize, by the calcium sulfite oxidation in the useless ash of desulfurization into calcium sulfate, while will be a small amount of in the useless ash of desulfurization
Lime changes into calcium carbonate, while by controlling the crystal growth time of gypsum, by the useless ash of semi-dry desulphurization, is changed into gypsum,
The quality of gypsum gives up ash for making plasterboard, cement retarder, adding with natural gypsum quality without too big difference, and then by desulfurization
The fields such as gas concrete.
Further, the present apparatus is additionally provided with compressed air unit, and the compressed air unit includes compressed air cylinder and band
The pipeline of air intake valve, compressed air cylinder by the pipeline communication gypsum dehydration unit with air intake valve vacuum hydroextractor it is true
Empty van body, it is mainly used to be purged to desulfurization of gypsum wetting system, to reduce gypsum moisture content.
Further, the storage metering units also include sack cleaner and vacuum relief valve, the sack cleaner
The top of the useless ash silo of desulfurization is arranged at vacuum relief valve.
Further, the feeding tube of the storage metering units is vertically arranged, and its top connects desulfurization by L-type bend pipe and given up
Ash silo, blocked with preventing useless ash from assembling in feeding tube.
Further, the bottom centrum gradient of the useless ash silo of the desulfurization is more than or equal to 60 °, can effectively prevent because desulfurization is given up
The angle of repose of ash is larger, and density is small, has adhesion and charge, and calcium lime powder blocks in storehouse, be hardened, and that easily accumulates asks
Topic.
The beneficial effects of the utility model are：
Using the technical solution of the utility model, ash that desulfurization can be given up transforms into the higher solid gypsum of purity, can
Greatly to extend the utilization orientation of the useless ash of desulfurization, popularization and popularization to semi-dry desulfurizing process bring profound significance；
After system of the present utility model processing, lime content is by 10%~30% not through before processing in the useless ash of desulfurization
It is down within 1%, calcium sulfite content is down within 3% by 20%~30% not through before processing, and dihydrate gypsum content is not by having
30%~40% through before processing improves to more than 85%, and gypsum purity is suitable with natural gypsum purity, and application prospect carries significantly
It is high.
Brief description of the drawings
Fig. 1 is the utility model structure diagram.
Embodiment
As shown in figure 1, the utility model discloses a kind of semi-dry desulfurizing process accessory substance processing unit, including storage meter
Measure unit, slurrying unit, force oxidation unit and gypsum dehydration unit；
The storage metering units include feeding tube 18, the useless ash silo 1 of desulfurization, weighing sensor 4, push-pull valve 5, star-shape feeding
Machine 6 and conveying worm 7；The closed tank truck of one end connection peripheral hardware of the feeding tube 18, the useless ash silo 1 of other end connection desulfurization
Charging aperture；Feeding tube 18 is vertically arranged, and its top connects the useless ash silo 1 of desulfurization by L-type bend pipe, to prevent useless ash in feeding tube
Aggregation blocks in 18, and the useless top of ash silo 1 of the desulfurization is staving, and bottom is centrum, and the bottom centrum of the useless ash silo 1 of the desulfurization is oblique
Degree is set to 60 °, can effectively prevent that the angle of repose of the ash because desulfurization is given up is larger, density is small, has adhesion and charge, quick lime
Powder blocks in storehouse, is hardened, the problem of easily accumulation；Desulfurization is given up, and ash silo 1 is interior to be provided with weighing sensor 4, and the bottom of centrum, which is set, inserts
Plate valve 5；The discharging opening of the useless ash silo 1 of desulfurization is formed under the opening of push-pull valve 5, the discharging opening connects star feeder 6
Feed end；The star feeder 6 is used for uniform discharge, and its discharge end connects the feed end of conveying worm 7, the spiral
The discharge end connection slurrying unit of conveyer 7；Also include sack cleaner 2 and vacuum relief valve 3, the He of sack cleaner 2
Vacuum relief valve 3 is arranged at the top of the useless ash silo 1 of desulfurization；
The slurrying unit includes pulping tank 8, slurry mixer 9 and Pulp pump 10；Slurry mixer 9 connects motor,
And go deep into pulping tank 8, the pulping tank 8 is additionally provided with air inlet and grout outlet, and oxidation unit, grout outlet are forced in air inlet connection
Pulp pump 10 is connected by pipeline；
Oxidation unit is forced to include oxidation fan 15 and accordingly pipeline composition, the oxygen that oxidation fan 15 bloats passes through
The air inlet of pipeline connection pulping tank 8 is simultaneously blasted in pulping tank 8；
The gypsum dehydration unit includes gypsum cyclone 11, vacuum hydroextractor and gypsum storehouse 17；Gypsum cyclone 11
For collecting the slurry that is pumped into by Pulp pump 10, and after carrying out primary dewatering to slurry, the concentration slurry of formation is delivered to very
Empty dewaterer carries out second dehydration；The vacuum hydroextractor includes vacuum chamber, gas-liquid separator 13 and water ring vacuum pump 14；Institute
Belt conveyor wheel 12 built in vacuum chamber is stated, gypsum cyclone 11 is connected at the top of vacuum chamber, is formed in gypsum cyclone 11
Concentration slurry is flow to along opening on the belt of the head end of belt conveyor wheel 12, and the bottom of vacuum chamber is connected by filtrate backflow main pipe
Ventilation liquid/gas separator 13, filtrate backflow main pipe, gas-liquid separator 13, water ring vacuum pump 14 sequentially connect；17, the gypsum storehouse
In the end of belt conveyor wheel 12.
The present apparatus is additionally provided with compressed air unit, and the compressed air unit includes compressed air cylinder 16 and with air intake valve
Pipeline, the vacuum tank that compressed air cylinder 16 passes through vacuum hydroextractor in the pipeline communication gypsum dehydration unit with air intake valve
Body, it is mainly used to be purged to desulfurization of gypsum wetting system, to reduce gypsum moisture content.
The course of work is as follows：Closed tank truck ships useless ash to be desulfurization, and useless ash is delivered into desulfurization by feeding tube 18
In useless ash silo 1, desulfurization is given up, and ash silo 1 is interior to design 50-60m3, it is 1.5 times of the closed tank truck that can accommodate 30 tons, closed tank truck will
The feeding tube of the Geldart-D particle band connection present apparatus carried to scene, closed tank truck is transported by the byproduct after semi-dry desulphurization
18, the useless ash of desulfurization is pumped into, it is necessary to during slurrying, is opened push-pull valve 5, is delivered in pulping tank 8, weighing sensor 4 is used in slurrying
When measuring fixed amount, judge that desulfurization in storehouse is given up ash quantity, indicates, alarm available for teletransmission.It is uniform that solid content is made into pulping tank
Stable useless grey slurries, pressure oxidation and the gypsum crystallization process of the useless ash of desulfurization are then completed in pulping tank.Slurries are in slurrying
In tank after treatment, the slurries after processing are sent into by dewatering system by Pulp pump and carry out dewater treatment.
The oxidation wind bloated from oxidation fan 15 is fed in the oxidation wind laid stock tank bottom after cooling, by pipeline
Pipeline, oxidation fan 15 are the oxidation air that pulping tank 8 provides abundance, ensure to absorb the abundant oxygen of calcium sulfite in pulping tank 8
Change, so as to transform into calcium sulfate.Calcium hydroxide in useless ash, which has, is partially converted into calcium carbonate.The type selecting of oxidation fan 15 with
The volume of pulping tank 8 matches.
General oxidation fan sets two, and an operation, one standby, can select roots blower or screw pneumatics
Machine；
Thick plaster slurry in pulping tank 8 after fully oxidized, crystallization is sent into gypsum cyclone 11, gypsum by Pulp pump 10
The overflow slurry of cyclone 11 directly returns to pulping tank 8, and underflow is sent to the table of belt pulley 12 of vacuum hydroextractor by distributed pipeline
Face, with the at the uniform velocity advance of belt pulley 12, the moisture in gypsum slurries is extracted out by negative pressure, it is most of to be sent into pulping tank 8, few portion
Other industrial water spots of plant area can be periodically sent into by dividing.
The annular configuration of gypsum cyclone 11, each gypsum cyclone 11 are equipped with single valve.Gypsum cyclone 11 is adopted
Made of the material of wear resistant corrosion resistant, its supporting structure uses carbon steel component.At least standby eddy flow of gypsum cyclone 11
Son.Gypsum slurries after the dehydration of the one-level of gypsum cyclone 11 deliver to vacuum hydroextractor, will by the swabbing action of vavuum pump 14
Gypsum slurries are further dehydrated, and the gypsum filter cake of generation, filtrate is sent to pulping tank 8.
Negative pressure is produced in vavuum pump 14, under suction function, the free waters of gypsum slurries with suction air, through true
Empty dewaterer vacuum tank enters filtrate backflow main pipe, then tangentially enters vapour liquid separator 13.In vapour liquid separator 13, due to
Centrifuge, gas phase separates with liquid phase.Gas phase arranges air through vavuum pump, and liquid phase enters slurrying under gravity.
The present apparatus is additionally provided with compressed air unit, and the compressed air unit includes compressed air cylinder 16 and with air intake valve
Pipeline, the vacuum tank that compressed air cylinder 16 passes through vacuum hydroextractor in the pipeline communication gypsum dehydration unit with air intake valve
Body, it is mainly used to be purged to desulfurization of gypsum wetting system, to reduce gypsum moisture content.
The density general control of slurries is in 1.2~1.35Kg/L in above-mentioned pulping tank 8, and the PH of slurries is to general control 4
~5, slurry temperature is substantially environment temperature, and residence time general control of the slurries in pulping tank 8 was at 16~18 hours, institute
State gypsum dehydration system to handle using two-stage dehydration device, one-level is pre-processed by gypsum cyclone 11, and concentration of slurry is promoted to
More than 50%, two level carries out deep dehydration using vacuum hydroextractor, and the moisture content in final finished gypsum is down to less than 10%.
In the gypsum after vacuum hydroextractor deep dehydration, gypsum crystal grain meso-position radius are more than 70 μm, gypsum purity
Not less than 85%, gypsum moisture content is no more than 10%.
Gypsum filter cake is in the tail end removal of belt 12.Filter cake is peeled off with belt pulley 12 under gravity, falls directly into gypsum
Storehouse 17, then by being transported after load wagon entrucking.
Claims (5)
- A kind of 1. semi-dry desulfurizing process accessory substance processing unit, it is characterised in that：Including storage metering units, slurrying unit, Force oxidation unit and gypsum dehydration unit；The storage metering units include feeding tube, desulfurization useless ash silo, weighing sensor, push-pull valve, star feeder and spiral shell Revolve conveyer；The closed tank truck of one end connection peripheral hardware of the feeding tube, the charging aperture of the useless ash silo of other end connection desulfurization；It is described The useless ash silo top of desulfurization is staving, and bottom is centrum, and desulfurization is given up, and ash silo is interior to be provided with weighing sensor, and the bottom of centrum sets plate Valve；The discharging opening of the useless ash silo of desulfurization, the charging of the discharging opening connection star feeder are formed under the push-pull valve opening End；The star feeder is used for uniform discharge, and its discharge end connects the feed end of conveying worm, the conveying worm Discharge end connects slurrying unit；The slurrying unit includes pulping tank, slurry mixer and Pulp pump；Slurry mixer connects motor, and gos deep into slurrying In tank, the pulping tank is additionally provided with air inlet and grout outlet, and oxidation unit is forced in air inlet connection, and grout outlet is connected by pipeline Pulp pump；The pressure oxidation unit includes oxidation fan and corresponding pipeline forms, and the oxygen of oxidation fan bulging passes through pipeline Connect the air inlet of pulping tank and blast in pulping tank；The gypsum dehydration unit includes gypsum cyclone, vacuum hydroextractor and gypsum storehouse；Gypsum cyclone be used for collect by The slurry that Pulp pump is pumped into, and to slurry carry out primary dewatering after, by the concentration slurry of formation be delivered to vacuum hydroextractor carry out Second dehydration；The vacuum hydroextractor includes vacuum chamber, gas-liquid separator and water ring vacuum pump；It is defeated built in the vacuum chamber Belt pulley is sent, gypsum cyclone is connected at the top of vacuum chamber, the concentration slurry formed in gypsum cyclone flow to defeated along opening On the belt for sending belt pulley head end, the bottom of vacuum chamber connects gas-liquid separator by filtrate backflow main pipe, and filtrate backflow is female Pipe, gas-liquid separator, water ring vacuum pump sequentially connect；The gypsum warehouse compartment is in the end of belt conveyor wheel.
- A kind of 2. semi-dry desulfurizing process accessory substance processing unit according to claim 1, it is characterised in that：It is additionally provided with pressure Contracting air element, the compressed air unit includes compressed air cylinder and the pipeline with air intake valve, compressed air cylinder pass through band The vacuum chamber of vacuum hydroextractor in the pipeline communication gypsum dehydration unit of air intake valve.
- A kind of 3. semi-dry desulfurizing process accessory substance processing unit according to claim 1 or 2, it is characterised in that：It is described Storage metering units also include sack cleaner and vacuum relief valve, and the sack cleaner and vacuum relief valve are arranged at de- The top of the useless ash silo of sulphur.
- A kind of 4. semi-dry desulfurizing process accessory substance processing unit according to claim 3, it is characterised in that：The storage The feeding tube of metering units is vertically arranged, and its top connects the useless ash silo of desulfurization by L-type bend pipe.
- A kind of 5. semi-dry desulfurizing process accessory substance processing unit according to claim 1 or 2, it is characterised in that：It is described The bottom centrum gradient of the useless ash silo of desulfurization is more than or equal to 60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720799889.3U CN206970236U (en) | 2017-07-04 | 2017-07-04 | A kind of semi-dry desulfurizing process accessory substance processing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720799889.3U CN206970236U (en) | 2017-07-04 | 2017-07-04 | A kind of semi-dry desulfurizing process accessory substance processing unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206970236U true CN206970236U (en) | 2018-02-06 |
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ID=61407332
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720799889.3U Expired - Fee Related CN206970236U (en) | 2017-07-04 | 2017-07-04 | A kind of semi-dry desulfurizing process accessory substance processing unit |
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| Country | Link |
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| CN (1) | CN206970236U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110104670A (en) * | 2019-06-03 | 2019-08-09 | 中建材环保研究院（江苏）有限公司 | A kind of desulfurizing byproduct effective utilization system and method |
-
2017
- 2017-07-04 CN CN201720799889.3U patent/CN206970236U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110104670A (en) * | 2019-06-03 | 2019-08-09 | 中建材环保研究院（江苏）有限公司 | A kind of desulfurizing byproduct effective utilization system and method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180206 |
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| CF01 | Termination of patent right due to non-payment of annual fee |