Utility model content
In order to solve the problems referred to above, this utility model provides a kind of pyrolysis of coal reactor and pulverized-coal fired boiler combined system, pin
Pulverized-coal fired boiler is provided with a kind of New type coal plug process system, produces high value added product, and utilize existing pulverized-coal fired boiler
Induction system, it is achieved semicoke heat is sent, ensures the burning of semicoke, and reduces coal plug process costs.
Coal plug, it is intended to normal pressure, middle low temperature, without catalyst and hydrogen under conditions of, extract coal by the mode of mild pyrolysis
In gas, liquid fuel and fine chemicals, and technique desulphurization denitration whereby, thus realize oil, coal air and heat, electricity multi-joint
Produce.
The purpose of this utility model provides a kind of pyrolysis of coal reactor and pulverized-coal fired boiler combined system, and this system includes coal heat
Solve reactor, pulverized coal preparation system, pulverized-coal fired boiler,
Described pyrolysis of coal reactor is heat accumulating type descending-bed reactor, including: reactor body, is built in described reactor
The cyclone separator on the top of body, granular bed, described granular bed includes: side panel, be fixed on described reactor
Two wallboards on the sidewall of body, the multiple air inlets being arranged on described side panel and drawing and pulling type valve, the most described side
Panel, said two wallboard and described sidewall surround the cavity of upper shed, and described valve is positioned at the bottom of described granular bed,
Pyrolysis oil gas vent it is provided with on sidewall between the fixed position of described wallboard;Wherein, described cyclone separator is communicated to
The air inlet of described granular bed;
The semicoke outlet of described pyrolysis of coal reactor is connected with the semicoke entrance of described pulverized coal preparation system;
The discharge of described pulverized coal preparation system is connected with the coal powder entrance of described pulverized-coal fired boiler.
In this utility model, described pyrolysis of coal reactor also includes the gas collection dress being arranged within described reactor body
Putting, gas collecting apparatus can quickly collect the pyrolysis oil gas within reactor body, and described gas collecting apparatus connects described cyclonic separation
Device, is transported to cyclone separator by the pyrolysis oil gas collected.
In this utility model, described granular bed farther includes dividing plate, and described dividing plate is porous plate, described dividing plate cloth
Put between said two wallboard and relative with described side panel, thus in described dividing plate, said two wallboard and described side
The first air chamber is formed between panel.Pyrolysis oil gas out from cyclone separator, is introduced into the first air chamber, is full of the first air chamber
After enter granular bed through dividing plate, so, dividing plate all take part in ventilative work, it is to avoid only part is ventilative, its
On hole blocked by tar prematurely, shorten dividing plate service life;Meanwhile, dividing plate by the pulverized coal particle in granular bed every
From, it is to avoid entered cyclone separator by the air inlet of side panel.
In this utility model, described granular bed farther includes filter plate, and described filter plate is porous plate, described filter plate cloth
Put between said two wallboard and relative with described pyrolysis oil gas vent, thus described filter plate, said two wallboard and
The second air chamber is limited between sidewall between the fixed position of described wallboard.Pyrolysis oil gas is entered by the cavity of granular bed
During the second air chamber, all participation work of filter plate, it is to avoid filter plate, because of the partial ventilation of only corresponding pyrolysis oil gas vent, uses frequency
The excessive pore causing this part to be distributed of rate is blocked by tar too early and scraps, and extends the service life of filter plate, reduces and stop
Work changes the frequency of filter plate, improves production efficiency.
Pyrolysis of coal reactor of the present utility model and pulverized-coal fired boiler combined system farther include pyrolysis oil gas processing system,
Pyrolysis oil gas is processed;
Described pyrolysis oil gas processing system is connected with the pyrolysis oil gas vent of described pyrolysis of coal reactor.
As preferably embodiment, pyrolysis oil gas processing system described in the utility model includes: Separate System of Water-jet, heat
Vent one's spleen cleaning system, tar refining system;
The pyrolysis oil gas vent of described pyrolysis of coal reactor is connected with described Separate System of Water-jet, described Separate System of Water-jet
Gas outlet be connected with described pyrolysis gas cleaning system, the liquid outlet of described Separate System of Water-jet and described tar refining system
System connects.
In this utility model, described pyrolysis gas cleaning system has and is connected to the combustible gas of described pyrolysis of coal reactor and goes out
Mouthful, the part combustible gas that pyrolysis gas cleaning system produces, as fuel, provides energy for pyrolytic reaction.
This utility model uses heat accumulating type descending-bed reactor as pyrolysis of coal reactor.The built-in rotation in reactor body top
Wind separator and granular bed dedusting, enter stove pyrolyzing coal and be partially into granular bed, and pyrolysis oil gas is through cyclone separator
Effectively reduce the dustiness in pyrolysis gas with granular bed, reduce follow-up tar pretreated cost, pass through dedusting simultaneously
System reduces pyrolysis of coal oil gas temperature, makes part tar condensing, and heavy tar yield reduces.Produce pyrolysis char and feed coal
Enter pulverized coal preparation system together and prepare coal dust, coal dust is delivered to described pulverized-coal fired boiler and burns, improve energy utilization rate.
For the ease of describing, in this article, term " coal fast pyrolysis reactor ", " heat accumulating type descending-bed reactor ", " heat
Solve stove " it is used interchangeably.
Detailed description of the invention
Below in conjunction with drawings and Examples, detailed description of the invention of the present utility model is described in more details, with
Just the advantage that better understood when scheme of the present utility model and various aspects thereof.But, specific implementations described below side
Formula and embodiment are only descriptive purposes rather than to restriction of the present utility model.
This utility model embodiment discloses pyrolysis of coal reactor and pulverized-coal fired boiler combined system, is used for processing low-order coal.
As it is shown in figure 1, system includes pyrolysis of coal reactor 100, pulverized coal preparation system 200, pulverized-coal fired boiler 300 and pyrolysis oil gas processing system
400.There is pyrolytic reaction in raw material (low-order coal) in pyrolysis of coal reactor 100, produces pyrolysis char and pyrolysis oil gas.Pyrolysis half
Jiao enters pulverized coal preparation system 200 together with feed coal and prepares coal dust, described coal dust is delivered to described pulverized-coal fired boiler 300 to fire
Burn.Pyrolysis oil gas entrance pyrolysis oil gas processing system 400 carries out subsequent treatment and obtains combustible gas and tar.
Pyrolysis of coal reactor 100 is heat accumulating type descending-bed reactor, including reactor body and be built in reactor body
The gas collecting apparatus of inside, heat accumulation type radiant tube, cyclone separator, granular bed.
Reactor body is pyrolytic reaction container.Typically offer feed(raw material)inlet at the top of pyrolytic reaction container, at sidewall
On be provided with pyrolysis oil gas vent, arrange in the bottom of pyrolysis reactor semicoke outlet.
Heat accumulation type radiant tube is arranged in reactor body, and heat accumulation type radiant tube is along the short transverse multilamellar of reactor body
Arrange, arrange many heat accumulation type radiant tubes the most parallel to each other for every layer.Owing to using multilamellar heat accumulation type radiant tube to supply
Heat, response system simple in construction, easy to operate, heats is good, uniformity of temperature profile.Every layer of heat accumulation type radiant tube with adjacent on
The heat accumulation type radiant tube of lower two-layer short transverse parallel to each other and along reactor body is interspersed.Thus, it is remarkably improved
The pyrolysis efficiency of reactor, thus improve the output capacity of product.
Gas collecting apparatus is arranged on inside reactor cup, and for quickly collecting pyrolysis oil gas, gas collecting apparatus connects whirlwind and divides
From device.
Gas collection pattern pipe is arranged on the inside of reactor body, and gas collection pattern pipe is along the short transverse multilamellar of reactor body
Arranging, every layer has many gas collection pattern pipes parallel to each other.Gas collection pattern pipe is arranged in parallel with heat accumulation type radiant tube, and is storing
The respective left and right sides of hot type radial canal has been arranged symmetrically with two gas collection pattern pipes.Gas collection pattern pipe is connected with discharge.
Discharge is many, is arranged on the inside of reactor body, along the short transverse multi-tier arrangement of reactor body, often
Discharge described in root connects gas collection pattern pipe described in two-layer.
Discharge is all connected to gas gathering manifold.Gas gathering manifold is arranged on inside reactor body, and gas gathering manifold is along reactor
The inside wall height direction of body is arranged.Gas gathering manifold connects cyclone separator.Gas collecting apparatus can be quick by the pyrolysis oil gas produced
Import cyclone separator, effectively raise economic benefit.
Cyclone separator is built in the top of reactor body, is connected with gas gathering manifold as primary dust removing equipment.
Granular bed is fixed on the sidewall of pyrolytic reaction vessel, and is covered by pyrolysis oil gas vent, and this practicality is new
Covering described in type, refers to that pyrolysis oil gas vent is isolated by granular bed with reactor inner chamber.Granular bed divides with whirlwind
Connect from device so that pyrolysis oil gas can be entered granular bed by gas collecting apparatus through cyclone separator, by pyrolysis oil gas vent
This is external to discharge reaction vessel.
Granular bed is arranged on the sidewall of reactor body.In the present embodiment, granular bed includes wallboard, side
Panel, dividing plate, air inlet, filter plate and valve.
Two wallboards are separately fixed on the sidewall of reactor body.For convenience of explanation, refer in particular to be positioned at two wallboards
Sidewall between the fixed position of sidewall is referred to as " partial sidewall ".Pyrolysis oil gas vent is arranged in this " partial sidewall ",
I.e. it is provided with pyrolysis oil gas vent on the sidewall between the fixed position of wallboard.Side panel is fixed in the middle of two wallboards.Two
The partial sidewall of individual wallboard, side panel and reactor body is the cylindrical body of both ends open, around defining granular bed
Cavity.This cavity opens up and down, forms the passage that raw material falls.In other words, the top of granular bed is to open on open
Mouthful, as particle entrance.The bottom of granular bed is provided with telescopic valve, by controlling the aperture of valve, controls
Discharging speed processed.
Valve is a plate body, and the correct position under " partial sidewall " of previous reaction device body arranges elongated hole, valve
Telescopic it is installed in elongated hole.Valve is drawn in direction outside reactor body, can accelerate the raw material in granular bed cavity
Falling speed;Direction in reactor body pushes away valve, can slow down the raw material falling speed in granular bed cavity.Operation
Personnel can need to carry out autonomous operation according to production.
Arranging multiple air inlet on the side panels, air inlet is connected with cyclone separator.Cyclone separator is from gas collecting apparatus
The pyrolysis oil gas collected, is entered in the cavity of granular bed by air inlet, by pyrolysis oil after its interior raw material filters
Gas outlet is discharged outside reactor body.
Granular bed farther includes dividing plate, and baffle arrangement is between two wallboards and relative with side panel.Dividing plate will
The cavity isolation of air inlet and granular bed.Pyrolysis oil gas enters air inlet, is entered the cavity of granular bed by dividing plate.
Dividing plate is porous plate, and the aperture of dividing plate is 0~0.05mm, and the density in hole is that area hole count is no less than 500~5000/cm2.Every
Plate can be ventilated so that contacts with raw material in the cavity of pyrolysis oil gas entrance granular bed, can stop that again raw material is by air inlet
Enter in cyclone separator.
Further, dividing plate and side panel interval are arranged, dividing plate, two wallboards and side panel form the first air chamber.This
Sample, the pyrolysis oil gas entered from air inlet is introduced into the first air chamber, is full of the first air chamber, and pyrolysis oil gas uniformly can connect with dividing plate
Touch the cavity entering granular bed.The setting of the first air chamber makes full use of dividing plate so that the whole of dividing plate participate in ventilation-isolation
Work, it is to avoid dividing plate, because of the partial ventilation of only corresponding air inlet, uses the frequency excessive pore causing this part to be distributed quilt too early
Tar blocks and scraps, and extends the service life of dividing plate, and reducing stops work changes the frequency of dividing plate, improves production efficiency.
Granular bed farther includes filter plate, and filter plate is arranged between two wallboards and relative with pyrolysis oil gas vent,
Filter plate is by the cavity isolation of pyrolysis oil gas vent with granular bed.Filter plate is porous plate.The aperture of filter plate is 0~0.1mm, hole
Density be area hole count no less than 50~5000/cm2.Pyrolysis oil gas, by filter plate, is discharged reaction by pyrolysis oil gas vent
Device body is external.
The sidewall spacers of filter plate and reactor body is arranged, filter plate, two wallboards and sidewall surround the second air chamber.This
Sample, when pyrolysis oil gas is entered the second air chamber by the cavity of granular bed, all participation work of filter plate, it is to avoid filter plate is because of only
The partial ventilation of corresponding pyrolysis oil gas vent, uses the excessive pore causing this part to be distributed of frequency to be blocked by tar too early and report
Useless, extend the service life of filter plate, reducing stops work changes the frequency of filter plate, improves production efficiency.
Filter plate and dividing plate also have another set-up mode: filter plate is arranged on pyrolysis oil gas outlet, and dividing plate is put in air inlet
At Kou, pyrolysis oil gas vent is isolated with granular bed.In general, the pyrolysis oil gas vent of reactor, air inlet with
One section of pipe joint, convenient and transmission gas pipeline is connected, and dividing plate of the present utility model just can be arranged on granular bed
In inlet tube joint, filter plate is arranged in the pipe joint of pyrolysis oil gas vent, it is possible to reduce filter plate, the material consumption of dividing plate.
Pulverized coal preparation system 200 is for pulverizing as coal dust by semicoke and feed coal, in order to coal powder boiler combustion.Pulverized coal preparation system 200
The semicoke of semicoke entrance and pyrolysis of coal reactor export and be connected.Pulverized coal preparation system 200 also includes feed coal entrance and discharge,
Discharge is connected with pulverized-coal fired boiler coal powder entrance.Pyrolysis char enters pulverized coal preparation system by the semicoke entrance of pulverized coal preparation system 200,
Feed coal enters pulverized coal preparation system 200 by feed coal entrance.Pyrolysis char is crushed into coal dust together with feed coal, and coal dust is through coal
Powder outlet is discharged.
It is the burner of coal dust that pulverized-coal fired boiler makees 300, and coal dust enters pulverized-coal fired boiler 300 through coal powder entrance.Pulverized-coal fired boiler 300
Retain original coal combustion systems, it is not necessary to transform.Combusting coal fines can have multiple use, as being used for generating electricity.
This utility model also includes pyrolysis oil gas processing system 400, and the pyrolysis oil gas producing pyrolysis oven processes.Heat
Solve oil vapor treatment system and include Separate System of Water-jet 401, pyrolysis gas cleaning system 402 and tar refining system 403.Pyrolysis oil gas
Processing system 400 is connected with the pyrolysis oil gas vent of described pyrolysis of coal reactor 100.
Separate System of Water-jet 401, for being gas and liquid by pyrolysis Oil-gas Separation, is provided with gas outlet and liquid discharge
Mouthful.Separate System of Water-jet 401 is connected with the pyrolysis oil gas vent of pyrolysis of coal reactor 100, and gas outlet purifies system with pyrolysis gas
System 402 connection, liquid outlet is connected with tar refining system 403.
The gas that Separate System of Water-jet 401 separates enters pyrolysis gas cleaning system 402 through gas outlet, pyrolysis gas purify
System 402 produces combustible gas after processing.It is that 402 systems have and are connected to the flammable of described pyrolysis of coal reactor 100 that pyrolysis gas purifies
Gas exports.Pyrolysis gas cleaning system 402 produces part combustible gas and delivers to the burning of pyrolysis of coal reactor, provides heat for pyrolytic reaction
Can, it is achieved that the partly self-supporting of energy needed for system.
Separate System of Water-jet separates the liquid of 401 and enters tar refining system 403 through liquid outlet, through tar refining system
403 process obtain high-quality tar.
As in figure 2 it is shown, this utility model uses above-mentioned pyrolysis of coal reactor to process the stream of coal with pulverized-coal fired boiler combined system
Journey comprises the steps:
1, raw material is crushed to below particle diameter 3mm.
2, the raw material after crushing adds in pyrolysis of coal reactor, makes raw material generation pyrolytic reaction, and pyrolytic reaction produces heat
Solve oil gas and pyrolysis char.
3, the pyrolysis oil gas produced is collected to cyclone separator through gas collecting apparatus, then by granular bed dedusting, fall
Temperature heel row is produced coal pyrolysis reactor.
4, the pyrolysis char of 400-600 DEG C is exported from the semicoke of pyrolysis of coal reactor discharge, and enter together with feed coal
Entering pulverized coal preparation system, prepared coal powder size is about 200um, coal dust is delivered to pulverized-coal fired boiler to burn.Pyrolysis of coal will be discharged
The pyrolysis oil pneumatic transmission of reactor enters Separate System of Water-jet, obtains pyrolysis gas and pyrolytic tar.Pyrolysis gas is sent into pyrolysis gas purify
System, obtains combustible gas by the operation such as desulfurization, deamination, and pyrolytic tar sends into tar refining system, hydrogenated is refining to obtain
High-quality tar.
This utility model uses heat accumulating type descending-bed reactor as pyrolysis of coal reactor.The built-in rotation in reactor body top
Wind separator and granular bed dedusting, enter stove pyrolyzing coal and be partially into granular bed, and pyrolysis oil gas is through cyclone separator
Effectively reduce the dustiness in pyrolysis gas with granular bed, reduce follow-up tar pretreated cost, pass through dedusting simultaneously
System reduces pyrolysis of coal oil gas temperature, makes part tar condensing, and heavy tar yield reduces.Produce pyrolysis char and feed coal
Enter pulverized coal preparation system together and prepare coal dust, coal dust is delivered to described pulverized-coal fired boiler and burns, improve energy utilization rate.