CN209655336U - A kind of biologic grain and coal-fired coupled electricity-generation system - Google Patents
A kind of biologic grain and coal-fired coupled electricity-generation system Download PDFInfo
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- CN209655336U CN209655336U CN201920348137.4U CN201920348137U CN209655336U CN 209655336 U CN209655336 U CN 209655336U CN 201920348137 U CN201920348137 U CN 201920348137U CN 209655336 U CN209655336 U CN 209655336U
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- flue gas
- burning boiler
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
A kind of biologic grain and coal-fired coupled electricity-generation system, belong to biomass and coal-fired coupled electricity-generation technical field.The utility model in order to solve the problems, such as existing biomass generating combustion furnace generating efficiency is low, fuel tolerance is poor, heating surface coking, corrosion.The utility model includes the biological particles preparation system processed and stored for biomass material, for biological particles transportation system, the coal-burning boiler for combustion power generation and the flue gas purification system for fume treatment of biological particles conveying, the biological particles preparation system is connected to by biological particles transportation system with coal-burning boiler foundation, flue gas after coal-fired boiler combustion is for heating air needed for fuel combustion, using being discharged after flue gas purification system.The utility model can make full use of local resources, increase farmers' income, and enhance Business Economic Benefit and survival ability.
Description
Technical field
The utility model relates to a kind of biological particles and coal-fired coupled electricity-generation system, belong to biomass with fire coal and couple hair
Electro-technical field.
Background technique
Currently, the contradiction of energy and environment is got worse, with China's rapid economic development, demand for energy is increasingly increased
Add, in the case where facing the gradually exhausted background of fossil energy, seeks to adhere to sustainable development with circular economy, the ecological economy for guidance
Exhibition strategy.According to domestic " production of energy and consumption revolution strategy ", it is desirable that non-fossil energy generated energy accounts for the ratio of whole generated energy
Gravity, which is striven, reaches 50%." " 13 " control greenhouse gas emission programme of work " requires large-scale electricity power group's unit power supply CO2
Emission control is in 550g/kWh.
Existing generating power with biomass combustion technology is non-fossil energy generation technology, and there are mainly of two types for it: one is
Biomass direct combustion power generation technology is sent out that is, using biomass as sole fuel using water-cooling vibration furnace grate or circulating fluidized bed combustion
Electricity；Another kind is gasification of biomass fire coal coupled electricity-generation technology, i.e., is sent into the flue gas that fuel gas is had after gasification of biomass
Coal-burning boiler carries out coupled electricity-generation.That there are manufacturing costs is high for biomass direct combustion power generation technology, generating efficiency is low, fuel tolerance
The problems such as difference, heating surface coking, corrosion；Structure is complicated, operation there are gasification installation for gasification of biomass fire coal coupled electricity-generation technology
Control difficulty is big, input cost is high, tar precipitation leads to the safety problems such as valve blockage.
In conclusion being badly in need of proposing a kind of biomass of new paragon and coal-fired coupled electricity-generation system, to solve above-mentioned technology
Problem.
Utility model content
The utility model provides a kind of biologic grain and coal-fired coupled electricity-generation system for deficiency above-mentioned in the prior art
System.The brief overview about the utility model is given below, in order to provide some aspects about the utility model
Basic comprehension.It should be appreciated that this general introduction is not the exhaustive general introduction about the utility model.It is not intended to determine this
The key or pith of utility model, nor intended limitation the scope of the utility model.
The technical solution of the utility model includes:
A kind of biologic grain and coal-fired coupled electricity-generation system, including the biomass processed and stored for biomass material
Grain preparation system, for biological particles conveying biological particles transportation system, for the coal-burning boiler and use of combustion power generation
In the flue gas purification system of fume treatment, the biological particles preparation system passes through biological particles transportation system and fire coal
Boiler establishes connection, and flue gas is for heating air needed for fuel combustion after coal-fired boiler combustion, after flue gas purification system
Discharge.
Further, the biological particles preparation system includes biomass crusher, steam dryer, biomass powder
Broken machine and filler bin, the biomass crusher are connected to by level-one spiral conveyer with steam dryer, steam dryer
Be connected to by deuterostrophies conveyer with biomass pulverizer, biomass pulverizer is connected to filler bin, the filler bin with
Biological particles transportation system establishes connection.
Further, the biological particles transportation system includes packing auger, taper powder hopper, blower and delivery pipe, institute
The arrival end for the taper powder hopper stated is connected to by packing auger with filler bin, and the outlet end of taper powder hopper is connected to coal-fired by delivery pipe
Boiler is communicated with blower in taper powder hopper, the biological particles in taper powder hopper is transported in coal-burning boiler by blower.
Further, fast valve, wind speed measuring device, temperature sensor and Pneumatic ball are installed in the delivery pipe
Valve is also equipped with block clearing compressed air communication pipeline in delivery pipe.
Further, the flue gas purification system includes burner, denitrification apparatus, deduster, air-introduced machine, desulfurizer
And chimney, the flue gas gas outlet of the denitrification apparatus connection coal-burning boiler, denitrification apparatus are connected to the hot-side inlet of air preheater,
The cold side outlet of air preheater is connected to deduster, and the cold-side inlet of air preheater is connected with pressure fan, the hot end outlet of air preheater with
The burner internal of coal-burning boiler is connected to, and the outlet end of the deduster is connected with air-introduced machine, desulfurizer and chimney in turn.
A kind of biologic grain and coal-fired coupling process, comprising the following steps:
Step 1: biomass material, which is sent into biomass crusher, completes preparatory processing, forming fuel partial size is 3-6cm's
Biological particles；
Step 2: the biological particles that step 1 is processed to the 3-6cm partial size to be formed are sent into steam dryer and are done
Dry processing, the biological particles moisture after drying process are lower than 12%；
Step 3: the biological particles that rear partial size is 3-6cm, which are dried, in step 2 passes through deuterostrophies conveying
Machine is sent into biomass pulverizer, and the particle of partial size about 5mm is made with high-speed flow percussion by hammer knife cutting for biomass, with
After send to storing in filler bin；
Step 4: the biological particles of the 5mm particle of step 3 preparation are sent into taper powder hopper by packing auger, taper
Biological particles in powder hopper are subsequently fed into the burner hearth of coal-burning boiler by blowing under the action of blower to delivery pipe；
Step 5: the flue gas generated by coal-fired boiler combustion power generation is by air needed for air preheater heating fuel combustion
It is discharged after flue gas purification system is handled afterwards.
The utility model has the following beneficial effects:
The utility model provides a kind of new biomass utilization technologies, can be applied to biological particles with fire coal and couples hair
Electricity.The utility model can obviously reduce coal unit CO2, SO2 and NOx discharge, protect environment；Improve a variety of biomass fuels
Utilization rate and biomass combustion efficiency；Avoid biomass direct-fired and gasifying electricity generation technology bring heating surface coking, burn into burnt
The problems such as oil blocking, control；Local resources can be made full use of, are increased farmers' income, Business Economic Benefit and survival ability are enhanced.
Detailed description of the invention
Fig. 1 is a kind of biologic grain and coal-fired coupled electricity-generation system annexation figure；
In figure: 1 biomass crusher, 2- level-one spiral conveyer, 3- steam dryer, 4- deuterostrophies conveyer, 5-
Biomass pulverizer, 6- filler bin, 7- packing auger, 8- taper powder hopper, 9- blower, 10- fast valve, 11- block clearing compressed air connect
It threads a pipe, 12- wind speed measuring device, 13- temperature sensor, 14- pneumatic ball valve, 15- burner, 16- coal-burning boiler, 17- is de-
Nitre device, 18- air preheater, 19- pressure fan, 20- deduster, 21- air-introduced machine, 22- desulfurizer, 23- chimney, 24- delivery pipe.
Specific embodiment
Specific embodiment 1: embodiment is described with reference to Fig. 1, a kind of biologic grain of present embodiment and coal-fired coupling
Close electricity generation system, including process and stores for biomass material biological particles preparation system, be used for biological particles it is defeated
The biological particles transportation system sent, for the coal-burning boiler 16 of combustion power generation and for the flue gas purification system of fume treatment,
The biological particles preparation system is connected to by biological particles transportation system with the foundation of coal-burning boiler 16, coal-burning boiler 16
Flue gas is for heating air needed for fuel combustion after burning, using being discharged after flue gas purification system.The utility model creates benefit
With biological particles preparation system and coal-burning boiler coupled modes, biomass and coal-burning boiler coupled electricity-generation are realized, it makes use of
Existing coal-fired boiler combustion biological material, the usually content of the nitrogen in this biological material and sulphur containing far below coal-fired
Amount, reduces the generation of nitrogen oxides and sulfide in this way, reduces the discharge of air pollutants, and using the furnace of coal-burning boiler
Thorax biomass burning material wants high compared to mean temperature in the after-flame effect and burner hearth of biomass boiler, more conducively improves burning
The thermal efficiency and improve generated energy, while being effectively utilized coal-burning boiler and flue gas purification system after improving, reduce power generation investment at
This.
Specific embodiment 2: embodiment is described with reference to Fig. 1, a kind of biologic grain of present embodiment and coal-fired coupling
Electricity generation system is closed, the biological particles preparation system includes biomass crusher 1, steam dryer 3, biomass pulverizer
5 and filler bin 6, the biomass crusher 1 is connected to by level-one spiral conveyer 2 with steam dryer 3, steam dryer
3 are connected to by deuterostrophies conveyer 4 with biomass pulverizer 5, and biomass pulverizer 5 is connected to filler bin 6, the powder
Storehouse 6 is connected to the foundation of biological particles transportation system.The biomass material that the utility model is created is crushed by special biomass
After machine 1 completes preparatory processing, fuel partial size becomes 3-6cm, about loses 5% moisture, density about 400kg/m3.It is broken
Fuel enters in steam dryer 3 by level-one spiral conveyer 2, and fuel moisture is dry to 12% hereinafter, in order into one
Step crushes.Fuel after drying enters in pulverizer by deuterostrophies conveyer 4, is impacted by the cutting of hammer knife and high-speed flow
The particle of partial size about 5mm is made in biomass by effect, is sent to filler bin 6 and is stored, and in the utility model creation, middle warehouse is set
Setting can guarantee that biomass powder manufacturing apparatus is run under declared working condition for a long time, while meet unit lifting load control fuel quantity
It is required that.
Specific embodiment 3: embodiment is described with reference to Fig. 1, a kind of biologic grain of present embodiment and coal-fired coupling
Electricity generation system is closed, the biological particles transportation system includes packing auger 7, taper powder hopper 8, blower 9 and delivery pipe 24, described
The arrival end of taper powder hopper 8 be connected to filler bin 6 by packing auger 7, the outlet end of taper powder hopper 8 passes through delivery pipe 24 and is connected to
Coal-burning boiler 16 is communicated with blower 9 in taper powder hopper 8, the biological particles in taper powder hopper 8 is transported to combustion by blower 9
In coal burning boiler 16；Fast valve 10, wind speed measuring device 12, temperature sensor 13 and Pneumatic ball are installed in the delivery pipe 24
Valve 14 is also equipped with block clearing compressed air communication pipeline 11 in delivery pipe 24.Molding biological particles enter by packing auger
In taper powder hopper 8, required fuel particle is sent into pipeline by screw unloading valve, carries out pneumatic conveying using blower 9.It is defeated
It send and is provided with fast valve 10 on pipe 24, biomass fuel can be cut off rapidly when the urgent blowing out of boiler, guarantee safe operation of the boiler；
Wind speed measuring device 12 is additionally provided in delivery pipe 24, the speed of real time monitoring adjustment wind powder mixture prevents stifled powder；Delivery pipe
It is additionally provided with temperature sensor 13 on 24, temperature of charge is controlled at 70 DEG C hereinafter, preventing fuel spontaneous combustion；Delivery pipe 24
End is provided with pneumatic ball valve 14, and fuel furnace entering volume can be adjusted.It, can be by delivery pipe 24 when stifled powder occurs for pipeline
The block clearing compressed air of setting purges in time, guarantees to the stability of powder.
Specific embodiment 4: embodiment is described with reference to Fig. 1, a kind of biologic grain of present embodiment and coal-fired coupling
Electricity generation system is closed, fast valve 10, wind speed measuring device 12, temperature sensor 13 and Pneumatic ball are installed in the delivery pipe 24
Valve 14 is also equipped with block clearing compressed air communication pipeline 11 in delivery pipe 24.Biological particles are eventually by being arranged in powder feeding pipe
The burner of road end enters furnace chamber inner combustion, and in the process, the Secondary Air provided by pressure fan 19 is heated through air preheater 18
After be sent into burner, thus enter burner hearth in, with supplement fuel combustion needs oxygen amount.Since plant utilizes photosynthesis by ring
CO in border2O is released after absorption2, during biomass combustion, C is converted into CO2It releases, for environment, and
Do not increase CO2Discharge amount, thus, it is believed that CO when biomass combustion2For zero-emission.N, S content are compared to combustion in usual biomass
Coal wants low, replaces partial fuel coal that can reduce fuel type NOx and SO with biomass2；Biomass calorific value is lower simultaneously, flame when burning
Central temperature is lower, can reduce the generation of thermal NO x.Therefore, the utilization of biomass fuel can reduce coal unit CO2And
The discharge amount of NOx.Mean temperature is higher than water-cooling vibration furnace grate boiler and fluidized-bed combustion boiler in Pulverized Coal fired Boiler Furnace, is conducive to give birth to
The kindling of biomass fuel and after-flame improve its efficiency of combustion.Strict control biomass fuel mixes burning amount, input heat when operation
The 5% of heat is always inputted no more than burner hearth, a large amount of flue gases that coal dust firing generates can dilute K in biomass2O、Na2The alkali metal such as O
The concentration of oxide and HCl effectively solves the problems, such as biomass ash coking and heated surface corrosion.The flue gas that fuel combustion generates is in furnace
Denitrification apparatus is flowed in thorax, a large amount of NOx are reduced, can be by outlet NOx control in 50mg/Nm3 or less.Flue gas is by empty later
Pre- device transfers heat to First air and Secondary Air, subsequently enters deduster and removes most of dust, then by after air-introduced machine
Into desulfurizer, purified flue gas is discharged into atmosphere finally by chimney.
Specific embodiment 5: embodiment is described with reference to Fig. 1, a kind of biologic grain of present embodiment and coal-fired coupling
Electricity generation system is closed, the flue gas purification system includes burner 15, denitrification apparatus 17, deduster 20, air-introduced machine 21, desulfurization dress
22 and chimney 23 are set, the denitrification apparatus 17 is connected to the flue gas gas outlet of coal-burning boiler 16, denitrification apparatus 17 and air preheater 18
Hot-side inlet connection, the cold side outlet of air preheater 18 is connected to deduster 20, and the cold-side inlet of air preheater 18 is connected with air-supply
The hot end of machine 19, air preheater 18 exports and is connected to inside the burner 15 of coal-burning boiler 16, the outlet end of the deduster 20
It is connected with air-introduced machine 21, desulfurizer 22 and chimney 23 in turn.So set, since the flue gas after burning has a large amount of residual temperatures,
The utilization that can also carry out residual temperature after denitration process at this time is connected with air preheater 18 in the outlet end of denitrification apparatus, effect
It is that it can reduce the temperature of discharge flue gas, because the temperature of flue gas is excessively high, then the heat that flue gas is taken away is also more, thermal effect
Rate will reduce naturally, and exchange flue gas heat by air preheater 22 and burn the secondary of required oxygen amount to being used for coal-burning boiler 16
Wind, to supplement oxygen amount required for fuel combustion.
Specific embodiment 6: embodiment is described with reference to Fig. 1, a kind of biologic grain of present embodiment and coal-fired coupling
Conjunction method, comprising the following steps:
Step 1: biomass material, which is sent into biomass crusher 1, completes preparatory processing, forming fuel partial size is 3-6cm
Biological particles；
Step 2: the biological particles that step 1 is processed to the 3-6cm partial size to be formed are sent into steam dryer 3 and are done
Dry processing, the biological particles moisture after drying process are lower than 12%；
Step 3: the biological particles that rear partial size is 3-6cm, which are dried, in step 2 passes through deuterostrophies conveying
Machine 4 is sent into biomass pulverizer 5, and the particle of partial size about 5mm is made with high-speed flow percussion by hammer knife cutting for biomass,
It is subsequently sent to storage in filler bin 6；
Step 4: the biological particles of the 5mm particle of step 3 preparation are sent into taper powder hopper 8 by packing auger 7, cone
Biological particles in shape powder hopper 8 are by blowing the furnace for being subsequently fed into coal-burning boiler 16 to delivery pipe 24 under the action of blower 9
In thorax；
Step 5: being heated needed for fuel combustion by the flue gas that 16 combustion power generation of coal-burning boiler generates by air preheater 18
It is discharged after flue gas purification system is handled after air.
This embodiment is just an exemplary description of this patent, does not limit its protection scope, those skilled in the art
Member can also be changed its part, as long as it does not exceed the essence of this patent, within the protection scope of the present patent.
Claims (5)
1. a kind of biologic grain and coal-fired coupled electricity-generation system, it is characterised in that: including processing and storing for biomass material
Biological particles preparation system, for biological particles conveying biological particles transportation system, for the combustion of combustion power generation
Coal burning boiler (16) and the flue gas purification system for fume treatment, the biological particles preparation system pass through biological particles
Transportation system is established with coal-burning boiler (16) and is connected to, and flue gas is for heating sky needed for fuel combustion after coal-burning boiler (16) burning
Gas, using being discharged after flue gas purification system.
2. a kind of biologic grain according to claim 1 and coal-fired coupled electricity-generation system, it is characterised in that: the biology
Matter particle preparation system includes biomass crusher (1), steam dryer (3), biomass pulverizer (5) and filler bin (6), institute
The biomass crusher (1) stated is connected to by level-one spiral conveyer (2) with steam dryer (3), and steam dryer (3) passes through
Deuterostrophies conveyer (4) is connected to biomass pulverizer (5), and biomass pulverizer (5) is connected to filler bin (6), described
Filler bin (6) is connected to the foundation of biological particles transportation system.
3. a kind of biologic grain according to claim 2 and coal-fired coupled electricity-generation system, it is characterised in that: the biology
Matter particle transportation system includes packing auger (7), taper powder hopper (8), blower (9) and delivery pipe (24), the taper powder hopper (8)
Arrival end be connected to filler bin (6) by packing auger (7), the outlet end of taper powder hopper (8) is connected to by delivery pipe (24) fires
Coal burning boiler (16) is communicated with blower (9) in taper powder hopper (8), by blower (9) by the biological particles in taper powder hopper (8)
It is transported in coal-burning boiler (16).
4. a kind of biologic grain according to claim 3 and coal-fired coupled electricity-generation system, it is characterised in that: the conveying
Fast valve (10), wind speed measuring device (12), temperature sensor (13) and pneumatic ball valve (14), delivery pipe are installed on pipe (24)
(24) block clearing compressed air communication pipeline (11) is also equipped on.
5. a kind of biologic grain according to claim 1 and coal-fired coupled electricity-generation system, it is characterised in that: the flue gas
Purification system includes burner (15), denitrification apparatus (17), deduster (20), air-introduced machine (21), desulfurizer (22) and chimney
(23), the flue gas gas outlet of the denitrification apparatus (17) connection coal-burning boiler (16), denitrification apparatus (17) and air preheater (18)
Hot-side inlet connection, the cold side outlet of air preheater (18) is connected to deduster (20), and the cold-side inlet of air preheater (18) connects
Have pressure fan (19), the hot end outlet of air preheater (18) is connected to the burner hearth of coal-burning boiler (16), the deduster (20)
Outlet end is connected with air-introduced machine (21), desulfurizer (22) and chimney (23) in turn.
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| CN201920348137.4U CN209655336U (en) | 2019-03-19 | 2019-03-19 | A kind of biologic grain and coal-fired coupled electricity-generation system |
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| CN209655336U true CN209655336U (en) | 2019-11-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812830A (en) * | 2019-03-19 | 2019-05-28 | 哈尔滨锅炉厂有限责任公司 | A kind of biologic grain and coal-fired coupled electricity-generation system and method |
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2019
- 2019-03-19 CN CN201920348137.4U patent/CN209655336U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812830A (en) * | 2019-03-19 | 2019-05-28 | 哈尔滨锅炉厂有限责任公司 | A kind of biologic grain and coal-fired coupled electricity-generation system and method |
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