CN104344403A - Pebble coal comprehensive utilization system - Google Patents

Pebble coal comprehensive utilization system Download PDF

Info

Publication number
CN104344403A
CN104344403A CN201310341681.3A CN201310341681A CN104344403A CN 104344403 A CN104344403 A CN 104344403A CN 201310341681 A CN201310341681 A CN 201310341681A CN 104344403 A CN104344403 A CN 104344403A
Authority
CN
China
Prior art keywords
coal
pebble coal
pebble
monoblock
conveying
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201310341681.3A
Other languages
Chinese (zh)
Other versions
CN104344403B (en
Inventor
张清峰
赵振宁
任健
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
North China Electric Power Research Institute Co Ltd
Original Assignee
State Grid Corp of China SGCC
North China Electric Power Research Institute Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, North China Electric Power Research Institute Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201310341681.3A priority Critical patent/CN104344403B/en
Publication of CN104344403A publication Critical patent/CN104344403A/en
Application granted granted Critical
Publication of CN104344403B publication Critical patent/CN104344403B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23CMETHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C10/00Fluidised bed combustion apparatus
    • F23C10/18Details; Accessories
    • F23C10/22Fuel feeders specially adapted for fluidised bed combustion apparatus

Abstract

A pebble coal comprehensive utilization system comprises a plurality of unit plants, a pebble coal conveying device and a circulating fluidized bed boiler; each unit plant is provided with a plurality of medium speed mills, and an auxiliary steam header is arranged in each unit plant; the pebble coal conveying device is connected with the medium speed mills of each unit plant; the pebble coal conveying device is connected with a pebble coal bin; the circulating fluidized bed boiler is connected with the pebble coal bin and is connected with a fan and a water supply device; the circulating fluidized bed boiler is connected with the auxiliary steam header of each unit plant through a boiler steam mother tube. According to the system, the circulating fluidized bed boiler burns the pebble coal, and heat generated by burning of the pebble coal heats supplied water, and therefore steam is generated and conveyed to the unit plants. Steam extraction capacity of turbines of the unit plants is reduced; the unit output is increased; coal consumption of the unit plants is reduced; the pebble coal comprehensive utilization system can comprehensively and efficiently utilize the pebble coal discharged from the unit plants; the problem that the pebble coal is accumulated and discharged, and the land is occupied is solved; and the environmental pollution is avoided.

Description

Pebble coal utilization system
Technical field
The present invention has about a kind of pebble coal treatment system, especially has about a kind of pebble coal utilization system processing pebble coal.
Background technology
In recent years, thermal power generation unit obtains fast development, and Large Copacity, high parameter generating set are a large amount of, concentrated goes into operation, and medium-speed pulverizer obtains and applies quite widely simultaneously.In prior art, the particle being not easy to grind discharges by medium-speed pulverizer in running, and its main component has gangue, pyrite etc., also carries some raw coal secretly simultaneously, and has certain calorific value.At present, the pebble coal particle discharged there is no and is effectively utilized, but directly transports or drain into slag removing system, not only wastes a large amount of energy, and piles up the waste that pebble coal also result in tract.
The anxiety of electricity coal supply also causes coal-fired power plant composition changeable, and a lot of power plant has multiple coal supply mode, a large amount of impurity is inevitably brought in transportation, the burning ature of coal of a lot of power plant and designing coal quality is made to there is larger difference, therefore utilizing in medium-speed pulverizer pulverizing process, a large amount of pebble coals can be discharged, add that a lot of power plant is to the limitation of medium-speed pulverizer lectotype selection and the unreasonable of the method for operation, a large amount of raw coal has been carried secretly in the pebble coal of discharge, direct discharge, not only contaminated environment, and cause a large amount of wastes of the energy.
Existing power plant stone coal discharge is unstable, and pebble coal complicated component, the pebble coal discharged is difficult to carry out integrated treatment and utilization.And for current large-scale, Large Copacity thermal power generation unit, be assembled with multiple stage medium-speed pulverizer, when there is ature of coal variation and the method for operation is unreasonable, a large amount of pebble coals can be discharged, only rely on pebble coal treatment system to be transported to abandon, tangible is not wise move, and monoblock is in operation and needs to consume a large amount of steam, usually, power plant is configured with starting trouble or draws gas from unit and meets this requirement, not only waste energy, and decrease the steam flow entering steam turbine and carry out doing work, reduce exerting oneself of unit, the unit coal consumption of power plant is made to increase.
Therefore, be necessary the system that a kind of process pebble coal is newly provided, overcome above-mentioned defect.
Summary of the invention
The object of this invention is to provide a kind of pebble coal utilization system, also pass through the heat heated feed water of burning pebble coal generation by burning in circulating fluid bed boiler pebble coal and then produce steam Transportation in monoblock, decrease the extraction flow of steam of monoblock, add unit output, save the energy, reduce the coal consumption of monoblock, this pebble coal utilization system, can comprehensively, the pebble coal that discharges of efficiency utilization monoblock, solve the problem that pebble coal piles up discharge land occupation, avoid environmental pollution.
Above-mentioned purpose of the present invention can adopt following technical proposal to realize:
The invention provides a kind of pebble coal utilization system, described pebble coal utilization system comprises:
Multiple monoblock, each described monoblock has multiple medium-speed pulverizer, is provided with auxiliary steam header in described monoblock;
Pebble coal conveying device, it is connected with multiple medium-speed pulverizers of each described monoblock, and described pebble coal conveying device is connected with stone coal bunker;
CFBB, it is connected with described stone coal bunker, and described CFBB is connected with blower fan and waterworks, and described CFBB is connected with the auxiliary steam header of each described monoblock by the female pipe of Boiler Steam.
In a preferred embodiment, described monoblock also has monoblock pebble coal conveying device, multiple medium-speed pulverizers of each described monoblock are connected with described monoblock pebble coal conveying device respectively, and described monoblock pebble coal conveying device is connected with described pebble coal conveying device.
In a preferred embodiment, the bottom of described medium-speed pulverizer is connected with stone coal bunker, and the bottom of described stone coal bunker is connected with pebble coal batcher, and described pebble coal batcher is connected with described monoblock pebble coal conveying device.
In a preferred embodiment, pebble coal sieving approach device is connected with between described stone coal bunker and described CFBB.
In a preferred embodiment, the bottom of described stone coal bunker is connected with stone coal bunker outlet delivery device.
In a preferred embodiment, described CFBB is connected with chimney.
In a preferred embodiment, described pebble coal conveying device is negative pressure pneumatic conveying apparatus, belt conveyor or flight chain conveying device.
In a preferred embodiment, described stone coal bunker is provided with level-sensing device.
In a preferred embodiment, described stone coal bunker is provided with dust arrester and anti-block apparatus.
In a preferred embodiment, the bottom of described stone coal bunker is inversed-cone shape.
Feature and the advantage of pebble coal utilization system of the present invention are: pebble coal utilization system of the present invention, CFBB is integrated in multiple monoblock, monoblock is in operation discharged pebble coal after monoblock pebble coal conveying device and the collection of pebble coal conveying device, processing, be sent in CFBB and burn, water in waterworks is added thermosetting steam by the heat of burning in circulating fluid bed boiler, and those steam are assigned in the auxiliary steam header of each monoblock.This pebble coal utilization system not only solves the harm of stone coal discharge to environment, avoid environmental pollution, and by circulating fluidized bed boiler, pebble coal is burnt, and fully utilize the heat heated feed water of pebble coal burning generation, the steam that feedwater after heating is formed through the system integration to each monoblock, decrease the amount of drawing gas of the steam turbine connecting each monoblock, improve exerting oneself of unit, reduce the coal consumption of unit.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of pebble coal utilization system of the present invention.
Fig. 2 is the structural representation of the monoblock of pebble coal utilization system of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, the invention provides a kind of pebble coal utilization system, it comprises multiple monoblock 1, pebble coal conveying device 2 and CFBB 3.Wherein: each described monoblock 1 has multiple medium-speed pulverizer 11, is provided with auxiliary steam header 12 in described monoblock 1; Pebble coal conveying device 2 is connected with multiple medium-speed pulverizers 11 of each described monoblock 1, and described pebble coal conveying device 2 is connected with stone coal bunker 4; CFBB 3 is connected with described stone coal bunker 4, and described CFBB 3 is connected with blower fan 5 and waterworks 6, and described CFBB 3 is connected with the auxiliary steam header 12 of each described monoblock 1 by the female pipe 7 of Boiler Steam.
Specifically, shown in Fig. 2, be provided with multiple medium-speed pulverizer 11 in each monoblock 1, the quantity of medium-speed pulverizer 11 selects setting according to actual needs, does not limit at this.Auxiliary steam header 12 in each monoblock 1 is positioned at the top of multiple medium-speed pulverizer 11, and it is for being assigned to superheated steam in each monoblock 1.In the present invention, this monoblock 1 also has monoblock pebble coal conveying device 15, and multiple medium-speed pulverizers 11 of each monoblock 1 are connected with this monoblock pebble coal conveying device 15 respectively.In the present embodiment, the bottom of medium-speed pulverizer 11 is connected with stone coal bunker 13, and the bottom of stone coal bunker 13 is connected with pebble coal batcher 14, and medium-speed pulverizer 11 is connected with monoblock pebble coal conveying device 15 by pebble coal batcher 14.The pebble coal that stone coal bunker 13 discharges in running for collecting corresponding medium-speed pulverizer 11, and the pebble coal collected is delivered to monoblock pebble coal conveying device 15 through pebble coal batcher 14.
Pebble coal conveying device 2 is connected with the monoblock pebble coal conveying device 15 of each monoblock 1, and it is transported in stone coal bunker 4 for the pebble coal produced by multiple medium-speed pulverizers 11 of each monoblock 1.In the present invention, pebble coal conveying device 2 can be negative pressure pneumatic conveying apparatus, belt conveyor or flight chain conveying device.Stone coal bunker 4 has the effect of intermediate buffering, and it can carry out intermediate storage and buffering to the pebble coal that medium-speed pulverizer 11 each in each monoblock 1 discharges.In the present embodiment, described stone coal bunker 4 is provided with level-sensing device 41, dust arrester 42 and anti-block apparatus 43, wherein, level-sensing device 41 is for detecting the capacity of pebble coal in stone coal bunker 4, dust arrester 42 is for carrying out dust removal process to the pebble coal be delivered in stone coal bunker 4, and anti-block apparatus 43 can prevent the pebble coal in stone coal bunker 4 from blocking.In the present invention, the bottom of this stone coal bunker 4 is designed to the shape of inversed-cone shape, and the benefit of design is like this easy to pebble coal carry in stone coal bunker 4; In the present embodiment, the bottom of described stone coal bunker 4 is also connected with stone coal bunker outlet delivery device 44, and it is for discharging pebble coal unnecessary in stone coal bunker 4.
CFBB 3 receives the pebble coal from stone coal bunker 4, and the air carried by blower fan 5 carries out burning process to those pebble coals.In the present invention, pebble coal sieving approach device 8 is also connected with between described stone coal bunker 4 and described CFBB 3, this pebble coal sieving approach device 8 is for carrying out sieving approach to make pebble coal particle by pebble coal, to meet circulating fluidized bed boiler 3 to burn required requirement, in the present invention, those diameters met into the pebble coal particle of stove specification are less than 3mm.Described CFBB 3 is connected with chimney 9, and it to burn the waste gas after pebble coal particle for discharge cycle fluidized-bed combustion boiler 3.
Be connected to the waterworks 6 on CFBB 3, thermosetting steam is added under the effect of the heat of CFBB 3 burning, the female pipe 7 of Boiler Steam of those steam self-loopa fluidized-bed combustion boiler 3 upper ends is delivered in each monoblock 1, in the present invention, the auxiliary steam of each monoblock 1 connects case 12 and is connected with steam branch pipe 16, and the female pipe 7 of Boiler Steam is connected with the steam branch pipe 16 that the auxiliary steam of each monoblock 1 connects on case 12.
The process of this pebble coal utilization system process pebble coal is as follows: first, is carried out collecting, carrying by the pebble coal that the multiple medium-speed pulverizers 11 in corresponding unit unit 1 discharge by monoblock pebble coal conveying device 15; Then, utilize pebble coal conveying device 2 to be concentrated by the pebble coal of multiple monoblock 1 and carry out collecting, carry and processing, then focus in stone coal bunker 4 and store; Afterwards, the pebble coal collected by stone coal bunker 4 is processed through pebble coal sieving approach device 8, make the pebble coal particle with certain particle size, to meet the requirement that CFBB 3 burns; The stove that enters entering that the pebble coal particle of CFBB 3 and blower fan 5 carry burns that wind carries out efficiently in CFBB 3, clean burning, and the waste gas that burning pebble coal particle produces is got rid of through chimney 9; Water in waterworks 6 is heated to the steam with certain degree of superheat by the heat that CFBB 3 burning produces, the temperature of those steam can meet the requirement of the auxiliary steam of monoblock 1, those steam are guided in each monoblock 1 by the female pipe 7 of Boiler Steam, and sent in the auxiliary steam header 12 of each monoblock 1 respectively by monoblock steam branch pipe 16, the auxiliary steam steam connected in case 12 can reduce the amount of drawing gas of monoblock 1 effectively, increase exerting oneself of unit, reduce coal consumption.
Pebble coal utilization system of the present invention, CFBB 3 is integrated in multiple monoblock 1, monoblock 1 is in operation after discharged pebble coal collects through monoblock pebble coal conveying device 15 and pebble coal conveying device 2, processes, be sent in CFBB 3 and burn, water in waterworks 6 is added thermosetting steam by the heat that CFBB 3 burns, and those steam are assigned in the auxiliary steam header 12 of each monoblock 1.This pebble coal utilization system not only solves the harm of stone coal discharge to environment, avoid environmental pollution, and burnt by circulating fluidized bed boiler 3 pairs of pebble coals, and fully utilize the heat heated feed water of pebble coal burning generation, the steam that feedwater after heating generates through the system integration to each monoblock 1, decrease the amount of drawing gas of the steam turbine connecting each monoblock 1, improve exerting oneself of unit, reduce the coal consumption of unit.
The foregoing is only several embodiments of the present invention, those skilled in the art can carry out various change or modification to the embodiment of the present invention according to content disclosed in application documents and not depart from the spirit and scope of the present invention.

Claims (10)

1. a pebble coal utilization system, is characterized in that, described pebble coal utilization system comprises:
Multiple monoblock, each described monoblock has multiple medium-speed pulverizer, is provided with auxiliary steam header in described monoblock;
Pebble coal conveying device, it is connected with multiple medium-speed pulverizers of each described monoblock, and described pebble coal conveying device is connected with stone coal bunker;
CFBB, it is connected with described stone coal bunker, and described CFBB is connected with blower fan and waterworks, and described CFBB is connected with the auxiliary steam header of each described monoblock by the female pipe of Boiler Steam.
2. pebble coal utilization system as claimed in claim 1, it is characterized in that, described monoblock also has monoblock pebble coal conveying device, multiple medium-speed pulverizers of each described monoblock are connected with described monoblock pebble coal conveying device respectively, and described monoblock pebble coal conveying device is connected with described pebble coal conveying device.
3. pebble coal utilization system as claimed in claim 2, it is characterized in that, the bottom of described medium-speed pulverizer is connected with stone coal bunker, and the bottom of described stone coal bunker is connected with pebble coal batcher, and described pebble coal batcher is connected with described monoblock pebble coal conveying device.
4. pebble coal utilization system as claimed in claim 1, is characterized in that, be connected with pebble coal sieving approach device between described stone coal bunker and described CFBB.
5. pebble coal utilization system as claimed in claim 1, it is characterized in that, the bottom of described stone coal bunker is connected with stone coal bunker outlet delivery device.
6. pebble coal utilization system as claimed in claim 1, it is characterized in that, described CFBB is connected with chimney.
7. pebble coal utilization system as claimed in claim 1, it is characterized in that, described pebble coal conveying device is negative pressure pneumatic conveying apparatus, belt conveyor or flight chain conveying device.
8. pebble coal utilization system as claimed in claim 1, it is characterized in that, described stone coal bunker is provided with level-sensing device.
9. pebble coal utilization system as claimed in claim 1, it is characterized in that, described stone coal bunker is provided with dust arrester and anti-block apparatus.
10. pebble coal utilization system as claimed in claim 1, it is characterized in that, the bottom of described stone coal bunker is inversed-cone shape.
CN201310341681.3A 2013-08-07 2013-08-07 Pebble coal comprehensive utilization system Active CN104344403B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310341681.3A CN104344403B (en) 2013-08-07 2013-08-07 Pebble coal comprehensive utilization system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310341681.3A CN104344403B (en) 2013-08-07 2013-08-07 Pebble coal comprehensive utilization system

Publications (2)

Publication Number Publication Date
CN104344403A true CN104344403A (en) 2015-02-11
CN104344403B CN104344403B (en) 2017-04-12

Family

ID=52500572

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310341681.3A Active CN104344403B (en) 2013-08-07 2013-08-07 Pebble coal comprehensive utilization system

Country Status (1)

Country Link
CN (1) CN104344403B (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1061269A (en) * 1990-10-30 1992-05-20 浙江大学 Fluid-bed combustion boiler for sorting of stone coal vanadium-containing cinder
JP2000055303A (en) * 1998-08-11 2000-02-22 Nippon Steel Corp Waste heat recovering facility for melt reducing furnace and method for operating the same
CN201331080Y (en) * 2008-11-28 2009-10-21 张玉伟 Bowl-type coal grinding mill stone coal processing recycling device
CN201706469U (en) * 2010-06-18 2011-01-12 武秉哲 Circulating fluidized bed boiler used for cobblestone coal combustion
CN201715529U (en) * 2010-07-13 2011-01-19 西安科灵节能环保仪器有限公司 Automatic stone coal recycling and treatment device with furnace and medium-speed grinder
CN202113919U (en) * 2011-03-02 2012-01-18 西安科灵节能环保仪器有限公司 Pebble coal disposal-free self-treatment device of medium-speed coal mill
CN102506407A (en) * 2011-07-20 2012-06-20 皖能合肥发电有限公司 Cold start oil auxiliary heating system of boiler and heat source-less independent starting method of generating set
CN202884873U (en) * 2012-10-24 2013-04-17 南京国联电力工程设计有限公司 Solar energy and coal-fired thermal power plant auxiliary steam system integrated device
CN203421678U (en) * 2013-08-07 2014-02-05 国家电网公司 Comprehensive utilization system for pebble coal

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1061269A (en) * 1990-10-30 1992-05-20 浙江大学 Fluid-bed combustion boiler for sorting of stone coal vanadium-containing cinder
JP2000055303A (en) * 1998-08-11 2000-02-22 Nippon Steel Corp Waste heat recovering facility for melt reducing furnace and method for operating the same
CN201331080Y (en) * 2008-11-28 2009-10-21 张玉伟 Bowl-type coal grinding mill stone coal processing recycling device
CN201706469U (en) * 2010-06-18 2011-01-12 武秉哲 Circulating fluidized bed boiler used for cobblestone coal combustion
CN201715529U (en) * 2010-07-13 2011-01-19 西安科灵节能环保仪器有限公司 Automatic stone coal recycling and treatment device with furnace and medium-speed grinder
CN202113919U (en) * 2011-03-02 2012-01-18 西安科灵节能环保仪器有限公司 Pebble coal disposal-free self-treatment device of medium-speed coal mill
CN102506407A (en) * 2011-07-20 2012-06-20 皖能合肥发电有限公司 Cold start oil auxiliary heating system of boiler and heat source-less independent starting method of generating set
CN202884873U (en) * 2012-10-24 2013-04-17 南京国联电力工程设计有限公司 Solar energy and coal-fired thermal power plant auxiliary steam system integrated device
CN203421678U (en) * 2013-08-07 2014-02-05 国家电网公司 Comprehensive utilization system for pebble coal

Also Published As

Publication number Publication date
CN104344403B (en) 2017-04-12

Similar Documents

Publication Publication Date Title
CN104628237B (en) Sludge drying incineration system based on thermal power plant
CN102798276B (en) Combustion device for coal slime dust back combustion device
CN203421678U (en) Comprehensive utilization system for pebble coal
CN102944024A (en) Lignite thermal power generation system
CN107597797A (en) The high instant joint disposal of wet basis Chinese medicine slag energy utilizes system and method
KR20150145340A (en) Coal drying apparatus of a reheating type using low-pressure superheated steam
CN204829985U (en) Multipurpose biomass combustion power generation facility
CN204787204U (en) Energy -concerving and environment -protective boiler of using
CN204006066U (en) A kind of fine cleaned coal drying system dust treatment plant
KR101216814B1 (en) System for drying coal using super-heated steam of multiple heated high temperature
CN202581253U (en) Energy supply equipment of steam boiler
KR101278553B1 (en) Coal drying device and method using low-pressure superheated steam
CN104344403A (en) Pebble coal comprehensive utilization system
JP2013088033A (en) Biomass pretreatment unit, and biomass and coal mixed-firing system
JP2012078018A (en) Pretreatment unit
CN103353122B (en) Industrial boiler system and method for clean combustion of carbon particles
CN104492791A (en) Comprehensive plant medicine residue gasification utilization method and system
CN206199864U (en) A kind of urban garbage disposal and gas-to electricity system
CN104154554A (en) Slack clean coal drying system dust processing technology and device
CN205066339U (en) System suitable for shaping of dregs of a decoction stoving granule
CN204396451U (en) Plant medicine dregs gasification comprehensive utilizes system
JP2012078017A (en) Biomass storage unit, and pretreatment unit
CN202770152U (en) Coal slime powder burn-back furnace equipment
CN103386413A (en) Garbage incinerating device and garbage incinerating method
CN203518518U (en) Recycle burning device for coal powder obtained after brown coal drying

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
GR01 Patent grant