CN207659378U - A kind of semicoke humidification cooling system - Google Patents
A kind of semicoke humidification cooling system Download PDFInfo
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- CN207659378U CN207659378U CN201721527741.0U CN201721527741U CN207659378U CN 207659378 U CN207659378 U CN 207659378U CN 201721527741 U CN201721527741 U CN 201721527741U CN 207659378 U CN207659378 U CN 207659378U
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- semicoke
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Abstract
The utility model is related to a kind of semicokes to humidify cooling system, which includes wetting stirrer and slurrying pond, wherein the wetting stirrer includes semicoke entrance, semicoke slurry entrance and the burnt slurry outlet of humidification to be humidified；The slurrying pond includes that water inlet, the burnt slurry entrance of humidification and semicoke slurry export, semicoke slurry entrance described in the semicoke slurry outlet.The utility model mixes humidification stirring with semicoke slurry by using semicoke and is directly mixed with water instead of hot semicoke, substitutes water by using dilute burnt slurry, reduces surface tension, increase the compatibility with semicoke, wetting stirrer efficiency is greatly improved.
Description
Technical field
The utility model is related to semicoke process fields, and are more particularly related to a kind of semicoke humidification cooling system.
Background technology
In coal resources in China, the higher Young Coal proportion of volatile matter is larger, and dry base volatile matter content exists
28% or more Young Coal accounts for about 3/4 or so of national coal reserves, Young Coal of the dry base volatile matter content 35% or more
Account for about the 50% of national coal reserves.The coal that directly burns of China accounts for about the 80% of total coal amount, and the half for the coal that directly burns with
On for generating electricity, the chemical energy in many Young Coals is completely converted into thermal energy, waste in Young Coal potentially have it is high additional
Oil, gas and the chemicals of value.
In order to preferably utilize lignite, the long flame coal resource in China, low order pyrolysis of coal produces semicoke and pyrolysis gas is further
Using being a kind of new process efficiently utilized, wherein semicoke and the semi-coke powder cooling generated after pyrolysis of coal is a key link,
The especially cooling of coke powder.
All there is the temperature reduction technology of the high temperature coke powder of production in above-mentioned technique, while in order to dust-proof, facilitate storage, transport and under
The processing of one step process, needs humidification to stir.
Since the coke powder temperature of pyrolysis oven whirlwind outlet is higher, simultaneously because semicoke hydrophily is bad, especially coke powder is more
Obviously, and temperature is higher, and compatibility is poorer, so, the cooling of high temperature coke powder and humidification are currently a problem.
It is mainly reflected in following several respects：
1. high temperature coke powder and water directly mix, coke powder is easy to float on the water surface, and mixing is difficult.
2. if directly spray water in coke powder, it is easy to generate steam, drastically expands, influence equipment safety stable operation.
In the prior art, as shown in Figure 1, the pyrolysis gas of pyrolysis gas outlet initially enters one cyclonic dedusting in pyrolysis oven
Device enters back into second cyclone dust extractor after removing most crude particle dust, further dedusting, the crude particle dust in pyrolysis gas
It is collected by cyclone dust removal, is discharged by lower part unloading valve first.Then the remaining dust of pyrolysis gas carrying enters two level whirlwind
Deduster, cyclone dust collectors further collect dust therein, are discharged by the unloading valve of lower part, are removed by preceding two stage cyclone
Dirt device, 90% or more high-temperature semi-coke is separated in pyrolysis gas.Remaining pyrolysis gas and small part semi-coke powder are revolved from two level
Wind deduster excludes to enter next process.
Semi-coke powder out of two stage cyclone deduster is collected pyrolysis gas is discharged from deduster lower part unloading valve, and mixing is laggard
Enter cold burnt machine, while cooling water is arranged into hot water after cold burnt machine and high-temperature semi-coke heat exchange from water outlet by cold burnt machine water inlet
Go out.
High-temperature semi-coke powder temperature after exchanging heat with water is reduced to 80 DEG C or so from 700 DEG C or so, is stirred subsequently into humidification
Machine is mixed, while water enters wetting stirrer by nozzle, then water and cold coke become aqueous by prolonged stirring and mixing
The wet semicoke of rate 30% or so, which enters the slurry system slurrying of water coke or enters feed bin, to be stored.
However, above-mentioned technique still has as a drawback that：
(1) technological process is long, and the cold defocused wetting stirrer that enters back into of cold burnt machine is needed to humidify.
(2) if semicoke is directly entered wetting stirrer, hot semicoke temperature out is very high, is 750 DEG C -650 DEG C, cycle
Coolant-temperature gage is 30 DEG C -40 DEG C.Hot semicoke, which directly mixes to cause to thermally expand with recirculated water, to be increased, and is easy to take during arranging outside vapor
Band part dust causes flour dust overflow, while producing influence to the sealing performance of equipment, and equipment damage is big, shortens equipment
Service life.And by entering back into wetting stirrer after cold burnt machine cooling, increase system investments.
Utility model content
The utility model is in view of the above-mentioned problems, be designed to provide a kind of semicoke humidification cooling system.
In order to achieve the above objectives, the utility model adopts the following technical solution：
On the one hand, one embodiment of the utility model discloses a kind of semicoke humidification cooling system comprising humidification stirs
Mix machine and slurrying pond, wherein
The wetting stirrer includes semicoke entrance, semicoke slurry entrance and the burnt slurry outlet of humidification to be humidified；
The slurrying pond includes water inlet, the burnt slurry entrance of humidification and the outlet of semicoke slurry, the semicoke slurry outlet
The semicoke slurry entrance.
Further, the dust compartment and secondary cyclone of the semicoke entrance connection primary cyclone to be humidified
Dust compartment.
Further, the burnt slurry outlet of the humidification is connected to the burnt slurry entrance of the humidification.
Further, further include the first slurry plunger pump and the second slurry plunger pump, the first slurry plunger pump setting
On the pipeline of semicoke slurry entrance described in the semicoke slurry outlet, the second slurry plunger pump setting is in connection institute
On the pipeline for stating the burnt slurry outlet of humidification and the burnt slurry entrance of the humidification.
Further, the burnt slurry outlet connection discharge header pipe of the humidification, the connection of the other end parallel connection of the discharge header pipe
The burnt slurry entrance of humidification and the burnt slurry discharge line of humidification.
Further, the second slurry plunger pump is arranged in the discharge header pipe.
Further, semicoke slurry inlet is provided with nozzle.
Further, the dust compartment lower end is provided with unloading valve.
Further, its pyrolysis gas outlet is arranged in the secondary cyclone upper end.
On the other hand, the embodiments of the present invention are also disclosed carries out the side that semicoke humidifies cooling using above system
Method comprising：The burnt slurry of humidification and water are made into semicoke slurry, humidification stirring is added in the semicoke slurry and semicoke to be humidified together
It is stirred evenly in machine, the burnt slurry of humidification is made.
Further, the burnt slurry part of the humidification obtained is used for being made into semicoke slurry, rest part discharge.
Further, the semicoke to be humidified is the high-temperature semi-coke and second cyclone dust extractor that one cyclonic deduster obtains
The mixture of obtained high-temperature semi-coke.
Further, the semicoke slurry is delivered to by the first slurry plunger pump at the nozzle of wetting stirrer, and is sprayed
It injects in wetting stirrer.
Further, the burnt slurry of humidification obtained makes to be made into semicoke slurry or row in its addition slurrying pond by the second plunger pump
Go out.
The utility model has the beneficial effects that：
The utility model produces the semicoke slurry thin pulp of water content 80%~90%, and the main region of water using slurrying pond
Between not being that surface tension difference, the surface tension of semicoke slurry are 0.03 n/m~0.05 n/m, the surface of normal-temperature water
Tension is 0.073 n/m.From water another difference is that the compatibility of itself and semi-coke powder is different with water.Thin pulp is instead of water
It is mixed into wetting stirrer and semicoke, the effect and speed of semicoke humidification stirring can be significantly improved.Solve semicoke and water
Mixing humidifies irregular problem.It is specific as follows：
1) humidification stirring is mixed with semicoke slurry by using semicoke directly to mix with water instead of hot semicoke, by using
Dilute burnt slurry substitutes water, reduces surface tension, increases the compatibility with semicoke, wetting stirrer efficiency is greatly improved.
Stirring section length can shorten 50%, and reduce airborne dust.Requirement of the system to sealing is reduced, to which equipment volume reduces,
Cost reduction.
2) it solves temperature and reaches 550 DEG C of hot semicokes and disposably largely mixed with 30 DEG C of recirculated water, and produce larger
Coefficient of thermal expansion, cause dust to leak security risk caused by with equipment superpressure.
Description of the drawings
Fig. 1 is the structural schematic diagram of the prior art；
Fig. 2 is the structural schematic diagram of one embodiment of the utility model.
Wherein, 1, pyrolysis oven, 2, one cyclonic deduster, 3, second cyclone dust extractor, 4, unloading valve, 5, slurrying pond, 6,
Wetting stirrer, 7, water inlet, 8, the burnt slurry entrance of humidification, 9, the outlet of semicoke slurry, 10, semicoke entrance to be humidified, 11, half cinder
Starch entrance, 12, the burnt slurry outlet of humidification, the 13, first slurry plunger pump, the 14, second slurry plunger pump.
Specific implementation mode
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with the accompanying drawings and implement
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only explaining this
Utility model is not used to limit the utility model.
As shown in Fig. 2, one embodiment of the utility model discloses a kind of semicoke humidification cooling system comprising humidification stirring
Machine 6 and slurrying pond 5, wherein the wetting stirrer 6 includes that semicoke entrance 10 to be humidified, semicoke slurry entrance 11 and humidification are burnt
Slurry outlet 12；The slurrying pond 5 includes water inlet 7, the burnt slurry entrance 8 of humidification and semicoke slurry outlet 9, the semicoke slurry outlet
9 are connected to the semicoke slurry entrance 11.
The present embodiment mixes humidification stirring with semicoke slurry using semicoke and is directly mixed with water instead of hot semicoke, passes through profit
Water is substituted with dilute burnt slurry, surface tension is reduced, increases the compatibility with semicoke, the effect of wetting stirrer 6 is greatly improved
Rate.Stirring section length can shorten 50%, and reduce airborne dust.Requirement of the system to sealing is reduced, to which equipment volume subtracts
It is small, cost reduction.Dust is avoided to leak security risk caused by with equipment superpressure.
In the another embodiment of the utility model, the semicoke entrance 10 to be humidified is connected to the dust of primary cyclone
The dust compartment in storehouse and secondary cyclone.Unloading valve 4 is obtained by being located at dust compartment lower end to release semicoke to be humidified.
As a kind of preferred embodiment of the utility model, the burnt slurry outlet 12 of the humidification and the burnt slurry entrance of the humidification
8 connections.The manufactured burnt slurry of humidification can be used directly as the raw material for preparing semicoke slurry.
The another embodiment of the utility model further includes on the basis of the above embodiments 13 He of the first slurry plunger pump
Second slurry plunger pump 14, the first slurry plunger pump 13 are arranged the semicoke slurry described in the semicoke slurry outlet and enter
On mouthfuls 11 pipeline, the setting of the second slurry plunger pump 14 be connected to the burnt slurry of the humidification export 12 and the humidification coke starch into
On the pipeline of mouth 8.
In another preferred embodiment, the burnt 12 connection discharge header pipe of slurry outlet of the humidification, the other end of the discharge header pipe
The burnt slurry entrance 8 of connection humidification and the burnt slurry discharge line of humidification in parallel, discharge line are used as downstream application for that will humidify burnt slurry
Raw material.
Use above-mentioned system carry out the method for semicoke humidification process for：The burnt slurry of humidification and water are made into semicoke slurry, it will
The semicoke slurry and semicoke to be humidified, which are added together in wetting stirrer 6, to stir evenly, and the burnt slurry of humidification is made.Accordingly, described
The burnt slurry part of humidification obtained is used for being made into semicoke slurry, raw material of the rest part discharge as downstream application.It is described to be humidified
Semicoke is the mixture of the high-temperature semi-coke that one cyclonic deduster 2 obtains and the high-temperature semi-coke that second cyclone dust extractor 3 obtains.Institute
It states semicoke slurry to be delivered at the nozzle of wetting stirrer 6 by the first slurry plunger pump 13, and is injected into wetting stirrer 6
In.Make to be made into semicoke in its addition slurrying pond 5 it is further preferred that the burnt slurry of humidification obtained is used as power by the second plunger pump
Slurry or discharge.
When in use, fine coal reacts the device of the utility model in fast pyrogenation stove 1, generates high-temperature semi-coke and pyrolysis
Gas.Pyrolysis gas carries high-temperature semi-coke powder and initially enters one cyclonic deduster 2, wherein 80% or so high-temperature semi-coke is collected,
The high-temperature semi-coke import of wetting stirrer 6 is discharged by unloading valve 4.Remaining pyrolysis gas carry remaining high-temperature semi-coke into
Enter second cyclone dust extractor 3, further dedusting, efficiency of dust collection is 80% or so.The high-temperature semi-coke that two level cyclone collection gets off
It is discharged by the high temperature unloading valve 4 of lower part, into the high-temperature semi-coke entrance of wetting stirrer 6.Two-way high-temperature semi-coke powder directly into
Enter wetting stirrer 6, spray into dilute burnt slurry in wetting stirrer 6 simultaneously, since high temperature coke powder can be with dilute burnt slurry mixing in time, institute
The dust carried in the process is arranged outside with the evaporation of vapor to greatly reduce.Meet the needs that high-temperature semi-coke powder directly humidifies.
The humidification coke slurry that above-mentioned wetting stirrer 6 makes is sent outside by Pulp pump, and the burnt slurry moisture content 45% of design humidification~
55% or so (mass percent), can be as the fuel of water-coal slurry furnace or the raw material of water-coal-slurry producer.Wherein 10%~
30% water coke slurry enters slurrying pond 5, in slurrying pond 5 further plus water becomes dilute burnt slurry i.e. semicoke slurry, moisture content 80%~
90% or so, wetting stirrer 6 is then squeezed by Pulp pump and high temperature coke powder mixes.The high-temperature semi-coke of wetting stirrer 6 enters
Unloading valve 4 connects under mouth and whirlwind, and unloading valve 4 outlet conduit in two stage cyclone lower part connects 6 high temperature of wetting stirrer partly after merging
Burnt entrance, the temperature of high-temperature semi-coke is 400 DEG C to 600 DEG C or so at this time.Wherein, slurrying pond 5 can be JRD--ZJ500S high speeds
Pulper safe prepares semicoke slurry to ensure to tell.Wetting stirrer 6 can select twin shaft to add blender SI-20,
Feature is multistage water jet and Multi-stage stirring.
The semi-coke powder come out from 1 two stage cyclone deduster lower part of pyrolysis oven initially enters the coke powder charging of wetting stirrer 6
Mouth is semicoke entrance 10 to be humidified, meanwhile, the thin pulp come out from high-speed pulping machine enters wetting stirrer 6 from water jet, passes through
Different spray ports sprays into the inside of wetting stirrer 6, and semicoke and thin pulp inject according to a certain percentage.Pass through wetting stirrer 6
The humidification coke slurry of water content 45%~55% is produced in the stirring of internal paddle.In the burnt slurry of humidification obtained, mass fraction is about
70%~90% or so humidification coke slurry is transported to coal water slurry combustion furnace by plunger pump or producer is used as raw material；Mass fraction
About 10%~30% or so the burnt slurry of humidification squeezes into the semicoke feed inlet of high-speed pulping machine by plunger pump, in high-speed pulping machine
Interior and further water mixing, is made the thin pulp of water content 80%~90%, then thin pulp squeezes into wetting stirrer 6 by plunger pump
Water jet and internal coke powder be stirred the qualified humidification coke slurry of production.
In the present embodiment, due to dilute burnt slurry surface tension smaller, hot semicoke is easier to mix, be mixed more with dilute burnt slurry
It is easy to add, and makes high temperature coke powder rapidly and dilute burnt slurry hybrid cooling, reduces the generation of steam, while also eliminating a large amount of steam and taking
The problem of band dust leaks.And it solves temperature and reaches 550 DEG C of hot semicokes and disposably largely mixed with 30 DEG C of recirculated water, and
The problem of larger coefficient of thermal expansion causes flour dust overflow is produced, solves the problems, such as that equipment is difficult to seal, improves economy
Benefit.
Embodiment
Pyrolysis oven pyrolysis gas consumption is designed according to 100 ton hours, pyrolysis oven raw coal consumption is 100t/h, production
50,000 Nm3/h of pyrolysis gas, the high-temperature semi-coke 50t/h of pyrolysis oven production.Wherein 10% or so high-temperature semi-coke powder is discharged with pyrolysis gas
Pyrolysis oven, it is 5t/h, 90% or more semicoke granularity≤0.5mm in pyrolysis gas that pyrolysis gas, which carries coke powder amount,.
Wherein high-temperature semi-coke temperature is 750 DEG C or so, and Industrial Analysis and elemental analysis, particularly relevant parameter are carried out to semicoke
Such as table 1：
1 high-temperature semi-coke Industrial Analysis of table and elemental analysis
Remarks：Mad refers to moisture, and Aad refers to ash content, and Vad- is volatile matter, and FCad is fixed carbon.
Semicoke granularmetric composition such as table 2 in pyrolysis gas：
Semicoke granularmetric composition in 2 pyrolysis gas of table
After pyrolysis gas is by cyclone dust collectors, wherein it is~500 DEG C or so to collect the semicoke temperature got off, heap density
0.45t/m3..Total amount is 5t/h.Specifically, the pyrolysis gas for carrying semi-coke powder initially enters one cyclonic deduster, wherein level-one
Cyclone dust removal efficiency is 80% or so, high-temperature semi-coke powder unloading valve discharge under whirlwind of about 4t/h.Then pyrolysis gas carries
Remaining high temperature coke powder enters second cyclone dust extractor, same reason, and about 0.8t/h high-temperature semi-coke powders are from two level cyclone dust removal
Unloading valve discharge under device, high-temperature semi-coke powder temperature is reduced to 400 DEG C or so at this time.Latter two right unloading valve outlet conduit closes
And 4.8t/h high-temperature semi-coke powders hourly enter wetting stirrer from wetting stirrer high-temperature semi-coke import.Due to dilute burnt slurry
It is good with the compatibility of high-temperature semi-coke, it can cool down with high temperature coke powder rapid fusion.So wetting stirrer can receive it is at higher temperature
The coke powder of degree.Temperature has 200 DEG C of the entrance maximum temperature of the prior art that can be increased to 400 DEG C or more, simplifies chilling coke processing.Add
Twin shaft wetting stirrer may be used in wet mixer, and middle front part is divided into water spray or whitewashing area, and rear portion is stirring area.
Relatively, if directly water spray stirring, since the tension of normal-temperature water is 0.073 n/m or so, additionally, due to semicoke
Powder contains a small amount of tar ingredients, so two kinds of compatibilities are poor, stirring, wetting stirrer are humidified according to the semi-coke powder of 4.8t/h
In stirring section length >=4 meter, while also will produce a large amount of airborne dust.
And starched containing 10% water coke of coke powder if sprayed into, surface tension, which reduces, comes 0.04 n/m or so, while in water coke slurry
Semicoke it is identical with coke powder property, be conducive to high temperature coke powder and water coke slurry rapid fusion.Wetting stirrer effect is greatly improved
Rate.Stirring section length can shorten 50%, reduce airborne dust, reduce requirement of the system to sealing.
The water coke come out from wetting stirrer starches coke content 50% or so, after being got by Pulp pump, wherein 10%~20%
Water coke slurry returns to slurrying pond, then adds water that the thin pulp of coke content 10% is made, squeezes into wetting stirrer by Pulp pump and be used as humidification
Raw material.Other remaining water coke slurries enter next process and starch the raw material of gas processed or the raw material of water coke slurry combustion furnace as water coke.
The above is only the preferred embodiment of the present invention, is not used for limiting the scope of the utility model；
If not departing from the spirit and scope of the utility model, the utility model is modified or replaced equivalently, should all be covered
In the protection domain of the utility model claims.
Claims (10)
1. a kind of semicoke humidifies cooling system, which is characterized in that including wetting stirrer and slurrying pond, wherein
The wetting stirrer includes semicoke entrance, semicoke slurry entrance and the burnt slurry outlet of humidification to be humidified；
The slurrying pond includes that water inlet, the burnt slurry entrance of humidification and semicoke slurry export, described in the semicoke slurry outlet
Semicoke slurry entrance.
2. semicoke as described in claim 1 humidifies cooling system, which is characterized in that the semicoke entrance to be humidified is connected to level-one
The dust compartment of cyclone separator and the dust compartment of secondary cyclone.
3. semicoke as described in claim 1 humidifies cooling system, which is characterized in that the burnt slurry outlet of the humidification and the humidification
Coke slurry entrance connection.
4. semicoke as claimed in claim 1 or 2 humidifies cooling system, which is characterized in that further include the first slurry plunger pump, institute
The first slurry plunger pump is stated to be arranged on the pipeline of semicoke slurry entrance described in the semicoke slurry outlet.
5. semicoke as claimed in claim 4 humidifies cooling system, which is characterized in that further include the second slurry plunger pump, it is described
Second slurry plunger pump is arranged on the pipeline for being connected to the burnt slurry outlet of the humidification and the burnt slurry entrance of the humidification.
6. semicoke as claimed in claim 5 humidifies cooling system, which is characterized in that the burnt slurry outlet connection discharging of the humidification is total
Pipe, the burnt slurry entrance of connection humidification and the burnt slurry discharge line of humidification of the other end parallel connection of the discharge header pipe.
7. semicoke as claimed in claim 6 humidifies cooling system, which is characterized in that the second slurry plunger pump is arranged in institute
It states in discharge header pipe.
8. semicoke as described in claim 1 humidifies cooling system, which is characterized in that semicoke slurry inlet is provided with spray
Mouth.
9. semicoke as claimed in claim 2 humidifies cooling system, which is characterized in that the dust compartment lower end, which is provided with, unloads ash
Valve.
10. semicoke as claimed in claim 2 humidifies cooling system, which is characterized in that the secondary cyclone upper end is set
Set its pyrolysis gas outlet.
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| CN201721527741.0U CN207659378U (en) | 2017-11-16 | 2017-11-16 | A kind of semicoke humidification cooling system |
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| CN201721527741.0U CN207659378U (en) | 2017-11-16 | 2017-11-16 | A kind of semicoke humidification cooling system |
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| CN207659378U true CN207659378U (en) | 2018-07-27 |
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ID=62946903
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107880909A (en) * | 2017-11-16 | 2018-04-06 | 北京神雾电力科技有限公司 | A kind of semicoke humidification cooling system and method |
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- 2017-11-16 CN CN201721527741.0U patent/CN207659378U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107880909A (en) * | 2017-11-16 | 2018-04-06 | 北京神雾电力科技有限公司 | A kind of semicoke humidification cooling system and method |
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Effective date of registration: 20201118 Address after: 102209 226, 2nd floor, building 71, 30 Litang Road, Changping District, Beijing Patentee after: Beijing Hengfeng Yaye Technology Development Co., Ltd Address before: 102200 Beijing city Changping District Machi Town kamis Road No. 18 building 201 room 2 Patentee before: BEIJING SHENWU POWER TECHNOLOGY Co.,Ltd. |