CN208632461U - A kind of pulverized coal pyrolysis coupling direct generation of electricity system - Google Patents
A kind of pulverized coal pyrolysis coupling direct generation of electricity system Download PDFInfo
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- CN208632461U CN208632461U CN201821248012.6U CN201821248012U CN208632461U CN 208632461 U CN208632461 U CN 208632461U CN 201821248012 U CN201821248012 U CN 201821248012U CN 208632461 U CN208632461 U CN 208632461U
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Abstract
The utility model discloses a kind of pulverized coal pyrolysis to couple direct generation of electricity system, including coal pulverizer, pulverized coal pyrolysis device, powder cabin, mill exhauster, boiler, primary air fan and air preheater；Wherein, the outlet of coal pulverizer is connected to the entrance of pulverized coal pyrolysis device, the outlet of pulverized coal pyrolysis device is divided into tar outlet, the outlet of high temperature coke breeze, pyrolysis gas exit and waste residue outlet, pyrolysis gas exit is connected directly to the entrance of boiler, high temperature coke breeze exports the entrance for being connected to powder cabin, the outlet of powder cabin is connected to the entrance of mill exhauster, and the entrance of mill exhauster is connected to the entrance of boiler；The First air outlet of primary air fan is divided into two-way, is connected to the entrance of air preheater all the way, the outlet of air preheater is connected to the heat primary air entrance of coal pulverizer, and another way is connected to the entrance of mill exhauster.A kind of pulverized coal pyrolysis provided by the utility model couples direct generation of electricity system, can be realized and sufficiently couples pulverized coal pyrolysis device with fired power generating unit.
Description
Technical field
The utility model belongs to coal classification sub-prime and utilizes field, and in particular to a kind of pulverized coal pyrolysis coupling direct generation of electricity system
System is suitable for after pyrolysis of coal on fossil-fired unit.
Background technique
The low temperature distillation technique in, by coal, in the case where completely cutting off air conditions, heat resolve generates tar, semicoke and coal gas,
The high chemical products of the available added value of deep processing are carried out to tar, this technique is to realize that coal classification sub-prime utilized has
Effect approach forms the industry chain of circular economy to show unique characteristics at home at present.
For a long time, low temperature distillation technique can only use lump coal (30-80mm) as feed coal in coal, and the production of lump coal
Rate only accounts for 25% or so of mining of raw coal amount, and a large amount of fine coal can not be processed effectively.By the unremitting of domestic relevant enterprise unit
Effort, currently, fine coal distillation process has been provided with application conditions.However, other than the tar product for generating high added value, coal gas
It can not efficiently be utilized with the semicoke of accounting 70% or so, cause certain energy waste and industry development and be obstructed.The big portion of coal gas
Divide lower by line or drive gas turbine power generation, effective rate of utilization；A large amount of semicoke can only be first cooled to room temperature, then
It is transported to fired power generating unit burning by way of transport, not only to consume energy and cool down to high-temperature semi-coke, but also is unrestrained in vain
The a large amount of high temperature sensible heat of high temperature coke breeze is taken.
Utility model content
The purpose of this utility model is to provide a kind of pulverized coal pyrolysis to couple direct generation of electricity system, for filling pulverized coal pyrolysis
It sets and is sufficiently coupled with fired power generating unit, on the one hand, before the standby pulverized coal preparation system of fired power generating unit first wife is mentioned pulverized coal pyrolysis device；It is another
The pyrolysis coal gas that pulverized coal pyrolysis device generates is sent directly into boiler as tertiary air and burnt by aspect；The third aspect, using thermoelectricity
The high temperature coke breeze that coke breeze pyrolysis installation generates is delivered in boiler and burns as pumped (conveying) medium by the cold First air that machine assembles.
What the utility model adopts the following technical solution to realize:
A kind of pulverized coal pyrolysis coupling direct generation of electricity system, including coal pulverizer, pulverized coal pyrolysis device, powder cabin, mill exhauster, pot
Furnace, primary air fan and air preheater；Wherein,
The outlet of coal pulverizer is connected to the entrance of pulverized coal pyrolysis device, the outlet of pulverized coal pyrolysis device be divided into tar outlet,
The outlet of high temperature coke breeze, pyrolysis gas exit and waste residue outlet, pyrolysis gas exit are connected directly to the entrance of boiler, high temperature powder
Coke outlet is connected to the entrance of powder cabin, and the outlet of powder cabin is connected to the entrance of mill exhauster, and the entrance of mill exhauster is connected to boiler
Entrance；The First air outlet of primary air fan is divided into two-way, is connected to the entrance of air preheater, the outlet of air preheater all the way
It is connected to the heat primary air entrance of coal pulverizer, another way is connected to the entrance of mill exhauster.
The utility model, which further improves, to be, is further included coal bunker, for storing the raw coal from coal yard, and is fed through
Coal-grinding mechanism powder.
The utility model, which further improves, to be, further includes raw coal conveyer belt, for that will be sent into from the raw coal of coal yard
To coal-grinding mechanism powder.
The utility model has following beneficial technical effect:
A kind of coke breeze pyrolysis coupling direct generation of electricity system provided by the utility model, by pulverized coal pyrolysis device and Coal-fired Thermal Power
Unit direct-coupling provides fine coal it is possible, firstly, to efficiently use the pulverized coal preparation system of fired power generating unit for pulverized coal pyrolysis device；Secondly,
The pyrolysis coal gas that pulverized coal pyrolysis device generates can be sent directly into boiler to burn as tertiary air, avoid pyrolysis coal gas directly outer
Boiler NOx generation can be effectively reduced in row while polluting；Again, the high temperature that can directly generate pulverized coal pyrolysis device
Coke breeze is directly sent into boiler combustion by cold First air, effectively avoids the waste of high temperature coke breeze sensible heat.
The utility model can make fired power generating unit realize that perfection couples with pulverized coal pyrolysis device, be the height of coke breeze after pulverized coal pyrolysis
Effect has significant ground social benefit and environmental benefit using a kind of new approach is provided.
Detailed description of the invention
Fig. 1 is the schematic diagram that a kind of pulverized coal pyrolysis of the utility model couples direct generation of electricity system.
In figure: 1- coal bunker, 2- coal pulverizer, 3- pulverized coal pyrolysis device, 4- powder cabin, 5- mill exhauster, 6- boiler, 7- First air
Machine, 8- air preheater.
Specific embodiment
The utility model is made further instructions below in conjunction with attached drawing.
As shown in Figure 1, a kind of pulverized coal pyrolysis provided by the utility model couples direct generation of electricity system, including coal bunker 1, coal-grinding
Machine 2, pulverized coal pyrolysis device 3, powder cabin 4, mill exhauster 5, boiler 6, primary air fan 7 and air preheater 8.
Wherein, for storing the raw coal from coal yard, and it is fed through the powder processed of coal pulverizer 2, the outlet of coal pulverizer 2 is connected to coal
The entrance of powder pyrolysis installation 3, the outlet of pulverized coal pyrolysis device 3 be divided into tar outlet, high temperature coke breeze outlet, pyrolysis gas exit with
And waste residue outlet, pyrolysis gas exit are connected directly to the entrance of boiler 6, high temperature coke breeze exports the entrance for being connected to powder cabin 4, powder
The outlet in storehouse 4 is connected to the entrance of mill exhauster 5, and the entrance of mill exhauster 5 is connected to the entrance of boiler 6；The First air of primary air fan 7
Outlet is divided into two-way, is connected to the entrance of air preheater 8 all the way, the outlet of air preheater 8 is connected to the heat one of coal pulverizer 2
Secondary wind entrance, another way are connected to the entrance of mill exhauster 5.
The principles of the present invention figure is as shown in Figure 1, key problem in technology is as follows:
Coal side: the raw coal from coal yard is sent into the powder processed of coal pulverizer 2 through coal bunker 1, after powder processed the satisfactory fine coal of partial size into
Entering pulverized coal pyrolysis device 3, tar, high temperature coke breeze, pyrolysis coal gas and waste residue is precipitated in carbonization in pulverized coal pyrolysis device 3,
Wherein tar, which is collected, carries out subsequent deep processing, and high temperature coke breeze enters powder cabin 4 through collecting, then is sent directly into pot via mill exhauster 5
Furnace 6 burns；
Wind side: the First air that the primary air fan 7 of pulverized coal pyrolysis coupling direct generation of electricity system generates is divided into two-way, enters all the way
Boiler air preheater 8 is heated to be heat primary air, and heat primary air subsequently enters coal pulverizer 2 as the drying of raw coal powder and defeated
Medium is sent, fine coal is carried after powder processed and enters pulverized coal pyrolysis device 3, is generated in the pulverized coal pyrolysis device 3 with pulverized coal pyrolysis
Boiler 6 is sent directly into after pyrolysis coal gas mixing to burn as tertiary air；Another way is as cold First air as the defeated of high temperature coke breeze
Medium is sent, boiler 6 is sprayed into through burner after mixing with the high temperature coke breeze that mill exhauster 5 is discharged and burns.
The range of the requires of the utility model protection is as follows:
1, raw coal, which is made, using coal pulverizer for a kind of pulverized coal pyrolysis coupling direct generation of electricity system meets pulverized coal pyrolysis device and wants
The fine coal for seeking partial size, drying and pumped (conveying) medium using fired power generating unit air preheater outlet heat primary air as raw coal；
2, a kind of pulverized coal pyrolysis coupling direct generation of electricity system carries out carbonization, production to fine coal using pulverized coal pyrolysis device
Pyrolysis coal gas be sent directly into boiler as tertiary air burn；
3, the high temperature coke breeze that fine coal is pyrolyzed generation in pulverized coal pyrolysis device enters powder cabin, after row powder fan is discharged with it is cold
It sprays into boiler and burns through boiler-burner after First air mixing.
Claims (3)
1. a kind of pulverized coal pyrolysis couples direct generation of electricity system, which is characterized in that including coal pulverizer (2), pulverized coal pyrolysis device (3),
Powder cabin (4), mill exhauster (5), boiler (6), primary air fan (7) and air preheater (8)；Wherein,
The outlet of coal pulverizer (2) is connected to the entrance of pulverized coal pyrolysis device (3), and the outlet of pulverized coal pyrolysis device (3) is divided into tar
Outlet, the outlet of high temperature coke breeze, pyrolysis gas exit and waste residue outlet, pyrolysis gas exit are connected directly to entering for boiler (6)
Mouthful, high temperature coke breeze exports the entrance for being connected to powder cabin (4), and the outlet of powder cabin (4) is connected to the entrance of mill exhauster (5), mill exhauster
(5) entrance is connected to the entrance of boiler (6)；The First air outlet of primary air fan (7) is divided into two-way, and it is pre- to be connected to air all the way
The entrance of hot device (8), the outlet of air preheater (8) are connected to the heat primary air entrance of coal pulverizer (2), and another way is connected to row
The entrance of powder machine (5).
2. a kind of pulverized coal pyrolysis according to claim 1 couples direct generation of electricity system, which is characterized in that further include coal bunker
(1), for storing the raw coal from coal yard, and it is fed through coal pulverizer (2) powder processed.
3. a kind of pulverized coal pyrolysis according to claim 1 couples direct generation of electricity system, which is characterized in that further include that raw coal is defeated
Band is sent, for the raw coal from coal yard to be fed through coal pulverizer (2) powder processed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821248012.6U CN208632461U (en) | 2018-08-03 | 2018-08-03 | A kind of pulverized coal pyrolysis coupling direct generation of electricity system |
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| CN201821248012.6U CN208632461U (en) | 2018-08-03 | 2018-08-03 | A kind of pulverized coal pyrolysis coupling direct generation of electricity system |
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| CN208632461U true CN208632461U (en) | 2019-03-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108728145A (en) * | 2018-08-03 | 2018-11-02 | 西安热工研究院有限公司 | A kind of pulverized coal pyrolysis coupling direct generation of electricity system |
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- 2018-08-03 CN CN201821248012.6U patent/CN208632461U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108728145A (en) * | 2018-08-03 | 2018-11-02 | 西安热工研究院有限公司 | A kind of pulverized coal pyrolysis coupling direct generation of electricity system |
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