CN107655023A - A kind of thermal power plant coal burning boiler - Google Patents

A kind of thermal power plant coal burning boiler Download PDF

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Publication number
CN107655023A
CN107655023A CN201710929011.1A CN201710929011A CN107655023A CN 107655023 A CN107655023 A CN 107655023A CN 201710929011 A CN201710929011 A CN 201710929011A CN 107655023 A CN107655023 A CN 107655023A
Authority
CN
China
Prior art keywords
heat exchanger
coal
feed screw
exchanger chamber
feeder
Prior art date
Application number
CN201710929011.1A
Other languages
Chinese (zh)
Inventor
王亚苹
Original Assignee
王亚苹
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 王亚苹 filed Critical 王亚苹
Priority to CN201710929011.1A priority Critical patent/CN107655023A/en
Publication of CN107655023A publication Critical patent/CN107655023A/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23KFEEDING FUEL TO COMBUSTION APPARATUS
    • F23K1/00Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23JREMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00Arrangements of devices for treating smoke or fumes
    • F23J15/06Arrangements of devices for treating smoke or fumes of coolers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23KFEEDING FUEL TO COMBUSTION APPARATUS
    • F23K1/00Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus
    • F23K1/04Heating fuel prior to delivery to combustion apparatus
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23KFEEDING FUEL TO COMBUSTION APPARATUS
    • F23K3/00Feeding or distributing of lump or pulverulent fuel to combustion apparatus
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23KFEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2201/00Pretreatment of solid fuel
    • F23K2201/10Pulverizing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23KFEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2203/00Feeding arrangements
    • F23K2203/20Feeding/conveying devices
    • F23K2203/202Feeding/conveying devices using screws
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23KFEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2900/00Special features of, or arrangements for fuel supplies
    • F23K2900/01041Heating by using exhaust gas heat
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/30Technologies for a more efficient combustion or heat usage

Abstract

The invention discloses a kind of thermal power plant coal burning boiler, including crushing motor, lateral transfer motor, low-temperature flue gas delivery pipe, heat exchanger chamber, horizontal feed screw, high-temperature flue gas conveyance conduit, boiler body, lifting feeder motor, steel-wire screen, installing plate, crushing casing and elevating screws feeder, helical blade is provided with the cylinder of the horizontal feed screw and elevating screws feeder, and the rotating shaft of two helical blade center connections is respectively by lateral transfer motor and lifting feeder motor driving;The discharging opening of the charging aperture connection elevating screws feeder of the horizontal feed screw.The present invention realizes the screening and crushing of feed coal by crushing casing so that coal can be refined more, convenient burning, improve efficiency of combustion.The present invention realizes the pre- recuperation of heat of boiler combustion process high temperature flue gas by heat exchanger chamber, and coal is preheated, while reduces moisture, realizes that the calorific value of coal improves.

Description

A kind of thermal power plant coal burning boiler

Technical field

The present invention relates to thermal power plant's manufacture field, specifically a kind of thermal power plant's coal burning boiler.

Background technology

Thermal power plant abbreviation thermal power plant, it is the factory by the use of combustible (such as coal) as fuel production electric energy.It The basic process of production is:Fuel heats water generation steam in burning, the chemical energy of fuel is transformed into heat energy, vapour pressure is pushed Dynamic steam turbine rotation, heat energy are converted into mechanical energy, and then steam turbine drives generator rotation, and mechanical energy is transformed into electric energy.It is former Motivation is typically steam engine or gas turbine, in some less power stations, it is also possible to can use internal combustion engine.They all pass through By turbine it is changed into the pressure drop of low-pressure air or condensed water during this using high temperature, high steam or combustion gas to generate electricity.

During thermal power generation, the equipment such as boiler are be unable to do without, and existing thermal power plant is remained using coal conduct Main combustion material, the burning degree of coal how is improved, be one of important channel for improving boiler combustion efficiency, and it is existing Boiler exist in use burn it is insufficient, while at discharge the problem of substantial amounts of high-temperature flue gas.

The content of the invention

It is an object of the invention to provide a kind of thermal power plant coal burning boiler, to solve to propose in above-mentioned background technology The problem of.

To achieve the above object, the present invention provides following technical scheme:

A kind of thermal power plant coal burning boiler, including crush motor, lateral transfer motor, low-temperature flue gas delivery pipe, change Hot cavity, horizontal feed screw, high-temperature flue gas conveyance conduit, boiler body, lifting feeder motor, steel-wire screen, installing plate, Casing and elevating screws feeder are crushed, spiral shell is provided with the cylinder of the horizontal feed screw and elevating screws feeder Vane piece, and the rotating shaft of two helical blade center connections is respectively by lateral transfer motor and lifting feeder motor driving;It is described The discharging opening of the charging aperture connection elevating screws feeder of horizontal feed screw, the charging aperture connection powder of elevating screws feeder The discharging opening of broken bottom half, realizes the conveying of coal, and the crushing casing is internally provided with installing plate, opened up on installing plate There is the hollow out that several coal supply charcoals leak down, the cover plate with charging aperture is connected with the top of the crushing casing;The installing plate Lower section is compounded with layer of steel wire screen cloth, and the bottom for crushing casing is the bottom plate being obliquely installed, position corresponding to the least significant end of bottom plate Install and be equipped with discharging opening, the inside of heat exchanger chamber, the horizontal screw feeding are arranged in the middle part of the horizontal feed screw The section surface that the cylinder of machine is located inside heat exchanger chamber offers opening, and one end of the heat exchanger chamber offers air admission hole, Air admission hole connects the fume emission port of boiler body by high-temperature flue gas conveyance conduit;The installing plate and lid for crushing casing Multiple rotating shafts are connected around its axle center between plate, are respectively connected with driven gear in rotating shaft, driven gear engages connection driving tooth Wheel, to form planetary gear pair, realizes that the stone in coal is crushed, herein driven gear and driving tooth by the rotation of gear Wheel is made using hard alloy, so as to easily pulverize coal cinder, while can be refined coal, is easy to burn, the master The rotating shaft of moving gear connects the output shaft for crushing motor by connector, crushes the top that motor is fixedly connected on cover plate, so as to Realize the driving of internal comminution system;Circle with holes corresponding with its diameter is all connected with below the driven gear and driving gear Cylinder.

As the further scheme of the present invention:The cylinder of the both ends open of the heat exchanger chamber and horizontal feed screw it Between sealed set, specifically using sealing ring fill between gap, with realize sealing.

As the further scheme of the present invention:The other end of the heat exchanger chamber offers connection low-temperature flue gas delivery pipe Steam vent.

As the further scheme of the present invention:The side of the heat exchanger chamber downwards offers tapped through hole, screw thread Through hole whorl connects the collection port of waste collection bottle, because high-temperature flue gas takes the moisture in coal in horizontal feed screw out of Afterwards, the wall of heat exchanger chamber is run into, will be condensed, and condensed liquid contains the pollution elements such as the S in coal, therefore not Can directly it discharge, and waste collection bottle passes through centralized collection, convenient follow-up harmless processing.

As the further scheme of the present invention:The waste collection bottle is stainless steel cylinder.

As the further scheme of the present invention:On the cylinder body outer wall of the inwall of the heat exchanger chamber and horizontal feed screw Several fins are welded with, fin accelerates the efficiency of heat exchange, while fin has certain accumulation of energy effect, ensures to dry surely It is fixed.

Compared with prior art, the beneficial effects of the invention are as follows:

(1) present invention realizes the screening and crushing of feed coal by crushing casing so that coal can be refined more, side Just burn, improve efficiency of combustion.

(2) present invention realizes the pre- recuperation of heat of boiler combustion process high temperature flue gas by heat exchanger chamber, and coal is carried out Preheating, while moisture is reduced, realize that the calorific value of coal improves.

(3) present invention is by reducing the temperature in high-temperature flue gas so that the harmful substance in flue gas can be cold with steam Coagulate and concentrate, and using waste collection bottle recovery pollutant, so that overall pollution is small, be advantageous to environmental protection.

Brief description of the drawings

Fig. 1 is the structural representation of thermal power plant's coal burning boiler.

Fig. 2 is the structural representation for crushing casing.

Fig. 3 is another structural representation for crushing casing.

In figure:Crush motor 1, lateral transfer motor 2, helical blade 3, low-temperature flue gas delivery pipe 4, heat exchanger chamber 5, opening 6th, horizontal feed screw 7, high-temperature flue gas conveyance conduit 8, boiler body 9, fin 10, waste collection bottle 11, lifting conveying electricity Machine 12, steel-wire screen 13, bottom plate 14, installing plate 15, crushing casing 16, driven gear 17, driving gear 18, elevating screws feeding Machine 19, cylinder with holes 20.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made Embodiment, belong to the scope of protection of the invention.

Refer to Fig. 1~3, in the embodiment of the present invention, a kind of thermal power plant coal burning boiler, including crush motor 1, horizontal To feeder motor 2, helical blade 3, low-temperature flue gas delivery pipe 4, heat exchanger chamber 5, opening 6, horizontal feed screw 7, high temperature cigarette Letter shoot road 8, boiler body 9, fin 10, waste collection bottle 11, lifting feeder motor 12, steel-wire screen 13, bottom plate 14, peace Loading board 15, crush casing 16, driven gear 17, driving gear 18 and elevating screws feeder 19, the horizontal feed screw 7 Be provided with helical blade 3 in the cylinder of elevating screws feeder 19, and the rotating shaft difference of two centers of helical blade 3 connections Driven by lateral transfer motor 2 and lifting feeder motor 12, so as to realize the lifting of coal feedstock and conveying;

The discharging opening of the charging aperture connection elevating screws feeder 19 of the horizontal feed screw 7, elevating screws feeding The charging aperture connection of machine 19 crushes the discharging opening of the bottom of casing 16, realizes the conveying of coal, and the inside for crushing casing 16 is set Installing plate 15 is equipped with, the hollow out that several coal supply charcoals leak down, the top connection for crushing casing 16 are offered on installing plate 15 There is the cover plate with charging aperture, surrounding its axle center between the installing plate 15 and cover plate for crushing casing 16 connects multiple rotating shafts, turns Driven gear 17 is respectively connected with axle, driven gear 17 engages connection driving gear 18, to form planetary gear pair, passes through tooth The rotation of wheel realizes that the stone in coal is crushed, and driven gear 17 and driving gear 18 are made using hard alloy herein, So as to easily pulverize coal cinder, while coal can be refined, be easy to burn, the rotating shaft of the driving gear 18 passes through connection Device connection crushes the output shaft of motor 1, the top that motor 1 is fixedly connected on cover plate is crushed, so as to realize internal comminution system Driving;The lower section of the installing plate 15 is compounded with layer of steel wire screen cloth 13, and the steel-wire screen 13 that steel wire is compiled into can will be compound It is required that coal sieve under, and the bottom for crushing casing 16 is the bottom plate 14 being obliquely installed, position corresponding to the least significant end of bottom plate 14 Discharging opening is provided with, in order to discharge.

Further, the lower section of the driven gear 17 and driving gear 18 is all connected with cylinder with holes corresponding with its diameter 20, the high-speed rotation of cylinder 20 with holes, it is not only able to attrition crushing material, moreover it is possible to pass through the hole cutting on cylinder and filter material.

The middle part of the horizontal feed screw 7 is arranged on the inside of heat exchanger chamber 5, the both ends open of heat exchanger chamber 5 with Sealed set between the cylinder of horizontal feed screw 7, specifically using sealing ring fill between gap, with realize sealing.

The section surface that the cylinder of the horizontal feed screw 7 is located inside heat exchanger chamber 5 offers opening 6, is used for The discharge of moisture during heating, one end of the heat exchanger chamber 5 offer air admission hole, and air admission hole passes through high-temperature flue gas conveyance conduit 8 Connect boiler body 9 fume emission port so that boiler body 9 burn caused by high-temperature flue gas be directed to heat exchanger chamber 5 Interior, high-temperature flue gas can carry out heating heating to the coal in horizontal feed screw 7, improve efficiency of combustion.

The other end of the heat exchanger chamber 5 offers the steam vent of connection low-temperature flue gas delivery pipe 4.

The side of the heat exchanger chamber 5 downwards offers tapped through hole, tapped through hole threaded connection waste collection bottle 11 collection port, because after high-temperature flue gas takes the moisture in coal in horizontal feed screw 7 out of, run into heat exchanger chamber 5 Wall, it will condense, and condensed liquid contains the pollution elements such as the S in coal, therefore can not directly discharge, and waste liquid Receiving flask 11 is by centralized collection, and convenient follow-up harmless processing, the waste collection bottle 11 is stainless steel cylinder.

Several fins 10, wing are welded with the inwall of the heat exchanger chamber 5 and the cylinder body outer wall of horizontal feed screw 7 Piece 10 accelerates the efficiency of heat exchange, while there is fin 10 certain accumulation of energy to act on, and ensures dry stable.

The present invention operation principle be:

The conveying of the invention realized by horizontal feed screw 7 and elevating screws feeder 19 to coal, and crush box The disintegrating mechanism that driven gear 17 and driving gear 18 are formed is provided with body 16;During real work, coal is advanced Enter to crushing in casing 16, be transported in boiler body and burnt by its screening and after crushing, and during conveying, It is by forming a heat exchange mechanisms between the smoke evacuation system and horizontal feed screw 7 of the boiler body of heat exchanger chamber 5, i.e., sharp High-temperature flue gas is dried and preheated to coal caused by boiler body burns, to improve efficiency of combustion.

Although the present invention is described in detail with reference to the foregoing embodiments, for those skilled in the art, It can still modify to the technical scheme described in foregoing embodiments, or which part technical characteristic is carried out etc. With replacing, within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., this should be included in Within the protection domain of invention.

Claims (6)

1. a kind of thermal power plant coal burning boiler, including crush motor (1), lateral transfer motor (2), low-temperature flue gas delivery pipe (4), heat exchanger chamber (5), horizontal feed screw (7), high-temperature flue gas conveyance conduit (8), boiler body (9), lifting conveying electricity Machine (12), steel-wire screen (13), installing plate (15), crushing casing (16) and elevating screws feeder (19), it is characterised in that institute State and helical blade (3) is provided with the cylinder of horizontal feed screw (7) and elevating screws feeder (19), and two spirals The rotating shaft of blade (3) center connection is respectively by lateral transfer motor (2) and lifting feeder motor (12) driving;The horizontal spiral The discharging opening of the charging aperture connection elevating screws feeder (19) of feeder (7), the charging aperture of elevating screws feeder (19) connect The discharging opening for crushing casing (16) bottom is connect, the crushing casing (16) is internally provided with installing plate (15), installing plate (15) On offer the hollow out that several coal supply charcoals leak down, be connected with the cover plate with charging aperture at the top of the crushing casing (16);Institute State and layer of steel wire screen cloth (13) is compounded with below installing plate (15), and the bottom for crushing casing (16) is the bottom plate being obliquely installed (14), position corresponding to the least significant end of bottom plate (14) is provided with discharging opening, is arranged in the middle part of the horizontal feed screw (7) The inside of heat exchanger chamber (5), the cylinder of the horizontal feed screw (7) are located at the internal section surface of heat exchanger chamber (5) and opened Provided with opening (6), one end of the heat exchanger chamber (5) offers air admission hole, and air admission hole is connected by high-temperature flue gas conveyance conduit (8) Connect the fume emission port of boiler body (9);The installing plate (15) for crushing casing (16) surrounds its axle center between cover plate Multiple rotating shafts are connected, driven gear (17) is respectively connected with rotating shaft, driven gear (17) engages connection driving gear (18), with Planetary gear pair is formed, driven gear (17) and driving gear (18) are made using hard alloy, the driving gear (18) Rotating shaft the output shaft for crushing motor (1) is connected by connector, crush motor (1) and be fixedly connected on the top of cover plate;It is described Cylinder (20) with holes corresponding with its diameter is all connected with below driven gear (17) and driving gear (18).
2. thermal power plant according to claim 1 coal burning boiler, it is characterised in that the two of the heat exchanger chamber (5) Sealed set between the cylinder of end opening and horizontal feed screw (7), the gap between being filled using sealing ring.
3. thermal power plant according to claim 1 or 2 coal burning boiler, it is characterised in that the heat exchanger chamber (5) The other end offers the steam vent of connection low-temperature flue gas delivery pipe (4).
4. thermal power plant according to claim 3 coal burning boiler, it is characterised in that the heat exchanger chamber (5) is vertical Side directed downwardly offers tapped through hole, the collection port of tapped through hole threaded connection waste collection bottle (11).
5. thermal power plant according to claim 4 coal burning boiler, it is characterised in that the waste collection bottle (11) is Stainless steel cylinder.
6. thermal power plant according to claim 4 coal burning boiler, it is characterised in that the heat exchanger chamber (5) it is interior Several fins (10) are welded with the cylinder body outer wall of wall and horizontal feed screw (7), fin (10) accelerates the effect of heat exchange Rate, while there is fin (10) certain accumulation of energy to act on, and ensure to dry stabilization.
CN201710929011.1A 2017-10-09 2017-10-09 A kind of thermal power plant coal burning boiler CN107655023A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710929011.1A CN107655023A (en) 2017-10-09 2017-10-09 A kind of thermal power plant coal burning boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710929011.1A CN107655023A (en) 2017-10-09 2017-10-09 A kind of thermal power plant coal burning boiler

Publications (1)

Publication Number Publication Date
CN107655023A true CN107655023A (en) 2018-02-02

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109387054A (en) * 2018-09-20 2019-02-26 大连理工大学 Dryer and method is mixed in a kind of vertical-type planetary differential auger
CN109737442A (en) * 2018-12-29 2019-05-10 袁明磊 A kind of boiler coal feeding system using solar energy
CN110631039A (en) * 2019-10-08 2019-12-31 雷迎谦 Industrial waste gas heat energy recycling device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004055435A1 (en) * 2002-12-11 2004-07-01 Alstom (Switzerland) Ltd Indirect heating system with upgrading of ultra-fine fuel particles
CN101975388A (en) * 2010-10-15 2011-02-16 华南理工大学 Biomass boiler system capable of saving energy and reducing emission
CN203571779U (en) * 2013-11-27 2014-04-30 江苏沃尔夫机械有限公司 Automatic coal loading device for drier
CN105195262A (en) * 2014-06-23 2015-12-30 新疆金宇鑫新材料有限公司 Planet wheel self-feeding-back centrifugal type sand making device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004055435A1 (en) * 2002-12-11 2004-07-01 Alstom (Switzerland) Ltd Indirect heating system with upgrading of ultra-fine fuel particles
CN101975388A (en) * 2010-10-15 2011-02-16 华南理工大学 Biomass boiler system capable of saving energy and reducing emission
CN203571779U (en) * 2013-11-27 2014-04-30 江苏沃尔夫机械有限公司 Automatic coal loading device for drier
CN105195262A (en) * 2014-06-23 2015-12-30 新疆金宇鑫新材料有限公司 Planet wheel self-feeding-back centrifugal type sand making device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109387054A (en) * 2018-09-20 2019-02-26 大连理工大学 Dryer and method is mixed in a kind of vertical-type planetary differential auger
CN109737442A (en) * 2018-12-29 2019-05-10 袁明磊 A kind of boiler coal feeding system using solar energy
CN109737442B (en) * 2018-12-29 2020-06-05 林浩 Boiler coal feeding system utilizing solar energy
CN110631039A (en) * 2019-10-08 2019-12-31 雷迎谦 Industrial waste gas heat energy recycling device

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