CN202938499U - Special hot flue gas generator for brown coal powder - Google Patents

Special hot flue gas generator for brown coal powder Download PDF

Info

Publication number
CN202938499U
CN202938499U CN 201220569303 CN201220569303U CN202938499U CN 202938499 U CN202938499 U CN 202938499U CN 201220569303 CN201220569303 CN 201220569303 CN 201220569303 U CN201220569303 U CN 201220569303U CN 202938499 U CN202938499 U CN 202938499U
Authority
CN
China
Prior art keywords
coal dust
double
heater
coal
temperature
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.)
Withdrawn - After Issue
Application number
CN 201220569303
Other languages
Chinese (zh)
Inventor
张振伟
张�诚
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.)
LIAONING GREENLAND ENERGY COAL CO Ltd
Original Assignee
LIAONING GREENLAND ENERGY COAL 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 LIAONING GREENLAND ENERGY COAL CO Ltd filed Critical LIAONING GREENLAND ENERGY COAL CO Ltd
Priority to CN 201220569303 priority Critical patent/CN202938499U/en
Application granted granted Critical
Publication of CN202938499U publication Critical patent/CN202938499U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model relates to a hot flue gas generator for coal powder, in particular to a special hot flue gas generator for brown coal powder. The special hot flue gas generator comprises a generator body and double swirl coal powder nozzles, wherein a high-temperature burning zone and a low-temperature burning zone are arranged inside the generator body, the double swirl coal powder nozzles are arranged on the generator body at one end of the high-temperature burning zone, a coal powder inlet and an air inlet are formed on the double swirl coal powder nozzles, and ignition holes are formed in the side wall of the generator body in the high-temperature burning zone; a flue gas outlet is formed at one end of the low-temperature burning zone, and a fire wall is arranged inside the low-temperature burning zone; and air distribution outlets and ash removing doors are arranged on both sides of the generator body in the high-temperature burning zone and the low-temperature burning zone. According to the utility model, coal powder with low heat value, high ash content, superfine particle size and small stacking density is utilized to generate flue gas through burning so as to solve the problem of storage of coal powder separated from upgrading drying of brown coal; and hot flue gas formed by mixing air and flue gas and provided with the temperature of 300 to 900 DEG C is output through settlement, ash removal, air distribution and mixing.

Description

A kind of special hot fume generating furnace of brown coal coal dust
Technical field
The utility model relates to the hot fume generating furnace of a kind of coal dust, specifically a kind of special hot fume generating furnace of brown coal coal dust.
Background technology
In the dry production process of brown coal upgrading, the coal dust of its drying system gas-solid separating device output does not also have processing method preferably at present.High due to this coal powder fraction, calorific capacity is low, granularity is little, bulk density is little, be insoluble in water, moulding difficult, and burning-point is low, packs easy spontaneous combustion, bulk storage flies upward greatly, is difficult to store, and very easily forms the secondary pollution of environment and causes the wasting of resources.All can not long-term storage in gas-solid separating device and Pulverized Coal Bin, natural storage will spontaneous combustion in these containers, must isolated air or in time discharge, can't process greatly simultaneously a difficult point that is difficult to overcome of formation brown coal upgrading dry run because of its output.Because brown coal upgrading dry run is convective drying, need to provide large calorimetric flue gas to be used for the moisture of evaporation brown coal as drying medium, generally adopt the thermal coal burning to produce hot flue gas, because of the brown coal treating capacity large, the exhaust gas volumn that needs is large, so energy consumption is very large, the thermal coal consumption is also very large.If the low fine coal dust firing of the high granularity of ash content of the calorific value that can utilize the drying system production process to produce provides hot flue gas, both solved the problem that coal dust is difficult to store, the consumption of having saved again thermal coal.The coal dust that brown coal upgrading drying is separated is different from the coal dust of general coal pulverizer output, even the coal dust that grinds with the brown coal before dry, difference due to granularity, bulk density, ash content, adopt the conventional hot fume generating furnace of coal dust this kind coal dust that burns, if guarantee quantity of heat given up, because the molten phenomenon of ash can appear in the restriction of body of heater volume and ignition temperature, will soon result in blockage, if want to guarantee that the body of heater burning is normal, can only reduce the coal dust consumption and sacrifice specified quantity of heat given up, reduce the hot exhaust gas volumn of output, therefore can not be suitable for.
The utility model content
For the problems referred to above, the purpose of this utility model is to provide a kind of special hot fume generating furnace of brown coal coal dust.The special hot fume generating furnace of this brown coal coal dust utilizes calorific value is low, ash content is high, granularity is fine and bulk density is little coal dust firing to produce hot flue gas and solves the coal dust storage problem that brown coal drying is separated, simultaneously the hot fume generating furnace of coal dust through sedimentation analyse ash and air distribution mix after the air of 300 ℃-900 ℃ of outputs and the hot flue gas of flue gas mixing.
To achieve these goals, the utility model is by the following technical solutions:
A kind of special hot fume generating furnace of brown coal coal dust, comprise body of heater and double-cyclone coal dust burner, wherein the inside of body of heater is divided into high temperature combustion zone and low-temperature burning district, one end of described high temperature combustion zone body of heater is provided with double-cyclone coal dust burner, described double-cyclone coal dust burner is provided with coal dust import and air inlet, and the sidewall of the furnace body of described high temperature combustion zone is provided with fire hole; One end of described low-temperature burning district body of heater is provided with exhanst gas outlet, and the inside in described low-temperature burning district is provided with firebreak; The body of heater both sides in described high temperature combustion zone and low-temperature burning district are equipped with air distribution outlet and shoot door.
Described double-cyclone coal dust burner is positioned at the middle and upper part of high temperature combustion zone body of heater one end, one end of described double-cyclone coal dust burner stretches in burner hearth, the other end is placed in the outside of body of heater, described coal dust import and air inlet are located at the other end of double-cyclone coal dust burner, and the installing hole of described double-cyclone coal dust burner and body of heater radially leaves the gap along circumference.
Described firebreak is parallel to the furnace body wall that is provided with exhanst gas outlet, leave exhaust gases passes between the inboard wall of furnace body in the upper end of firebreak and low-temperature burning district, the spout of described double-cyclone coal dust burner and the distance of firebreak are 6.5-7m, and the length that described double-cyclone coal dust burner stretches in burner hearth is 100mm.Described double-cyclone coal dust burner is two and is symmetricly set on an end body of heater of high temperature combustion zone.The below of described double-cyclone coal dust burner is provided with bellows, has a plurality of inflatable mouths along the body of heater width is uniform on described bellows.
The sidewall of the furnace body in described high temperature combustion zone and low-temperature burning district is provided with temperature sensor.Be provided with the butterfly valve of controlling the air distribution amount outside the body of heater of described air distribution outlet.The top in described high temperature combustion zone and low-temperature burning district is arch.
Described air inlet comprises air inlet and secondary air inlet, and wherein air inlet is located at the end of described double-cyclone coal dust burner, and described secondary air inlet is near the body of heater setting, and described coal dust import is once between air inlet and secondary air inlet.
The both sides, top of described exhanst gas outlet arrange two venting of dust explosion mouths.
Advantage of the present utility model and beneficial effect are:
1. the utility model utilizes the coal dust firing that calorific value is low, ash content is high, granularity is fine and bulk density is little to produce the coal dust storage problem that hot flue gas solution brown coal drying is separated.
2. the utility model is exported the air of 300 ℃-900 ℃ and the hot flue gas of flue gas mixing after analysing ash and air distribution mixing through sedimentation.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is A-A cutaway view in Fig. 1;
Fig. 3 is that the A of Fig. 1 is to view;
Fig. 4 is C-C cutaway view in Fig. 1;
Fig. 5 is B-B cutaway view in Fig. 1;
Wherein: 1 is double-cyclone coal dust burner, and 2 is bellows, and 3 is peep hole, 4 is sensor, and 5 is fire hole, and 6 is air distribution outlet, 7 is shoot door, and 8 is exhanst gas outlet, and 9 are the bottom blowing gas port, 10 is the cold wind import, and 11 is the coal dust import, and 12 is an air inlet, 13 is secondary air inlet, and 14 is firebreak, and 15 is high temperature combustion zone, 16 is the low-temperature burning district, and 17 is butterfly valve.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Fig. 1-5, the utility model comprises body of heater and double-cyclone coal dust burner 1, wherein the inside of body of heater is divided into high temperature combustion zone 15 and low-temperature burning district 16, the middle and upper part of body of heater one end of high temperature combustion zone 15 is arranged with two double-cyclone coal dust burners 1, one end of each double-cyclone coal dust burner 1 stretches in burner hearth, and the length that double-cyclone coal dust burner 1 stretches in burner hearth is 100mm.The other end of each double-cyclone coal dust burner 1 is placed in the outside of body of heater, and two double-cyclone coal dust burners 1 radially all leave the gap with the installing hole of body of heater along circumference, and is due to the combustion chamber draft effect, can the entering part surrounding air further combustion-supporting.The other end of double-cyclone coal dust burner 1 is provided with coal dust import 11, air inlet 12 and secondary air inlet 13, wherein air inlet 12 is located at the end of double-cyclone coal dust burner 1 and coaxial with double-cyclone coal dust burner 1, and secondary air inlet 13 is vertical with the axis of double-cyclone coal dust burner 1 near body of heater setting and axis.Coal dust import 11 is located between air inlet 12 and secondary air inlet 13.The below of two double-cyclone coal dust burners 1 is provided with bellows 2, has a plurality of inflatable mouths 9 along the body of heater width is uniform on bellows 2, dries by the bottom and reduces the high-temperature region ignition temperature, guarantees not produce ash molten.The sidewall of the furnace body of high temperature combustion zone 15 is provided with fire hole 5; The one end body of heater in low-temperature burning district 16 is provided with exhanst gas outlet 8, and the both sides, top of exhanst gas outlet 8 arrange two venting of dust explosion mouths 9, and the dust storm that dusts etc. under fortuitous event that prevents from not lighting a fire occurs.The inside in low-temperature burning district 16 is parallel to the furnace body wall that is provided with exhanst gas outlet 8 and is provided with firebreak 14.The spout of double-cyclone coal dust burner 1 and the distance of firebreak 14 are 6.5-7m, are beneficial to the soot particle sedimentation in pulverized coal particle afterburnt.Bellows 2 purge the ash content of after-flame to being convenient to cleaning near firebreak 14 simultaneously.The body of heater both sides in high temperature combustion zone 15 and low-temperature burning district 16 are equipped with air distribution outlet 6, and the body of heater outside of air distribution outlet 6 is provided with the butterfly valve 17 of controlling the air distribution amount.The 16 body of heater both sides set temperature sensor 4 respectively in high temperature combustion zone 15 and low-temperature burning district, the temperature in high temperature combustion zone 15 are controlled at below 1050 ℃, and the temperature in low-temperature burning district 16 is adjusted air distribution amounts, regulation output wind-warm syndrome by butterfly valve 17.High temperature combustion zone 15 and low-temperature burning district 16 body of heater two side bottoms arrange shoot door 7, manually ash discharge.The roof of the furnace in high temperature combustion zone 15 and low-temperature burning district 16 is arch, and the reflect heat at arched hearth top reduces radiation loss.Furnace volume is definite according to the volume thermic load, and the volume thermic load gets 13 * 10 4Kcal/m 3-14 * 10 4Kcal/m 3, guarantee the coal dust consumption and guarantee specified heat output.
Operation principle of the present utility model is:
During the utility model work, the coal dust that calorific value is low, ash content is high, granularity is fine and bulk density is little is at the uniform velocity added by coal dust import 11, coal dust is carried secretly under drive with secondary rotating wind by 1 ejection of double-cyclone coal dust burner in the strength of a wind, due to the flame interaction in fire hole 5, at the continuous spray combustion of the interior formation of high temperature combustion zone 15.Because coal dust is fine, pulverized coal particle in low-temperature burning district 16 the front basic after-flame of firebreak 14 and settle down, in the rear space of planes afterburnt sedimentation of only having a small amount of unburnt coal dust Mars to enter firebreak 14, whole hot fume generating furnace for negative pressure be-100Pa-500Pa.The cold wind of the air distribution amount by adjusting high temperature combustion zone 15 and the blowing mouth 9 of bottom bellows 2 purges, and regulating stove chamber inner combustion temperature guarantees that burner hearth does not produce ash molten lower than 1050 ℃; Guarantee the temperature of heat outputting flue gas by the air distribution amount of regulating low-temperature burning district 16, the heat outputting flue-gas temperature is at 300 ℃-900 ℃, and the air distribution amount is regulated by butterfly valve 17.

Claims (10)

1. the special hot fume generating furnace of a brown coal coal dust, it is characterized in that: comprise body of heater and double-cyclone coal dust burner (1), wherein the inside of body of heater is divided into high temperature combustion zone (15) and low-temperature burning district (16), one end of described high temperature combustion zone (15) body of heater is provided with double-cyclone coal dust burner (1), described double-cyclone coal dust burner (1) is provided with coal dust import (11) and air inlet, and the sidewall of the furnace body of described high temperature combustion zone (15) is provided with fire hole (5); One end of described low-temperature burning district (16) body of heater is provided with exhanst gas outlet (8), and the inside in described low-temperature burning district (16) is provided with firebreak (14); The body of heater both sides in described high temperature combustion zone (15) and low-temperature burning district (16) are equipped with air distribution outlet (6) and shoot door (7).
2. press the special hot fume generating furnace of brown coal coal dust claimed in claim 1, it is characterized in that: described double-cyclone coal dust burner (1) is positioned at the middle and upper part of high temperature combustion zone (15) body of heater one end, one end of described double-cyclone coal dust burner (1) stretches in burner hearth, the other end is placed in the outside of body of heater, described coal dust import (11) and air inlet are located at the other end of double-cyclone coal dust burner (1), and described double-cyclone coal dust burner (1) radially leaves the gap with the installing hole of body of heater along circumference.
3. press the special hot fume generating furnace of brown coal coal dust claimed in claim 2, it is characterized in that: described firebreak (14) is parallel to the furnace body wall that is provided with exhanst gas outlet (8), leave exhaust gases passes between the inboard wall of furnace body in the upper end of firebreak (14) and low-temperature burning district (16), the distance of the spout of described double-cyclone coal dust burner (1) and firebreak (14) is 6.5-7m, and the length that described double-cyclone coal dust burner (1) stretches in burner hearth is 100mm.
4. by the special hot fume generating furnace of the described brown coal coal dust of claim 1-3 any one, it is characterized in that: described double-cyclone coal dust burner (1) is two and is symmetricly set on an end body of heater of high temperature combustion zone (15).
5. by the special hot fume generating furnace of brown coal coal dust claimed in claim 1, it is characterized in that: the below of described double-cyclone coal dust burner (1) is provided with bellows (2), and described bellows (2) are upper along the uniform a plurality of inflatable mouths (9) that have of body of heater width.
6. by the special hot fume generating furnace of brown coal coal dust claimed in claim 1, it is characterized in that: the sidewall of the furnace body in described high temperature combustion zone (15) and low-temperature burning district (16) is provided with temperature sensor (4).
7. by the special hot fume generating furnace of brown coal coal dust claimed in claim 1, it is characterized in that: be provided with the butterfly valve (17) of controlling the air distribution amount outside the body of heater of described air distribution outlet (6).
8. by the special hot fume generating furnace of brown coal coal dust claimed in claim 1, it is characterized in that: the top in described high temperature combustion zone (15) and low-temperature burning district (16) is arch.
9. press the special hot fume generating furnace of the described brown coal coal dust of claim 1 or 2, it is characterized in that: described air inlet comprises an air inlet (12) and secondary air inlet (13), wherein an air inlet (12) is located at the end of described double-cyclone coal dust burner (1), described secondary air inlet (13) is near the body of heater setting, and described coal dust import (11) is positioned between an air inlet (12) and secondary air inlet (13).
10. by the special hot fume generating furnace of brown coal coal dust claimed in claim 1, it is characterized in that: the both sides, top of described exhanst gas outlet (8) arrange two venting of dust explosion mouths (9).
CN 201220569303 2012-10-31 2012-10-31 Special hot flue gas generator for brown coal powder Withdrawn - After Issue CN202938499U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220569303 CN202938499U (en) 2012-10-31 2012-10-31 Special hot flue gas generator for brown coal powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220569303 CN202938499U (en) 2012-10-31 2012-10-31 Special hot flue gas generator for brown coal powder

Publications (1)

Publication Number Publication Date
CN202938499U true CN202938499U (en) 2013-05-15

Family

ID=48322735

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220569303 Withdrawn - After Issue CN202938499U (en) 2012-10-31 2012-10-31 Special hot flue gas generator for brown coal powder

Country Status (1)

Country Link
CN (1) CN202938499U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103791608A (en) * 2012-10-31 2014-05-14 辽宁绿地能源煤业有限公司 Special hot flue gas generator for pulverized lignite
CN104197320A (en) * 2014-09-05 2014-12-10 中冶京诚工程技术有限公司 Pulverized coal combustion and warming furnace

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103791608A (en) * 2012-10-31 2014-05-14 辽宁绿地能源煤业有限公司 Special hot flue gas generator for pulverized lignite
CN103791608B (en) * 2012-10-31 2016-11-23 辽宁绿地能源煤业有限公司 The special heat smoke producer of brown coal coal dust
CN104197320A (en) * 2014-09-05 2014-12-10 中冶京诚工程技术有限公司 Pulverized coal combustion and warming furnace
CN104197320B (en) * 2014-09-05 2016-08-24 中冶京诚工程技术有限公司 Coal dust firing heating furnace

Similar Documents

Publication Publication Date Title
CN101725969B (en) Low-NOx pulverized coal burner
CN202546811U (en) Compound furnace arch and compound secondary air structure
CN202938499U (en) Special hot flue gas generator for brown coal powder
CN203517771U (en) Middle-temperature separating circulating fluidized bed boiler applicable to combusting high-sodium coal
CN101881433A (en) Steam boiler capable of burning biomass
CN103206703B (en) Biomass smoke boiler
CN201322439Y (en) Pulverized-coal burnt horizontal-type hot fume generating furnace
CN205026655U (en) Biomass inflamer of tangential feed
CN101907292A (en) Vertical environment-friendly boiler for triple dedusting burning wood and biological particle fuel in boiler
CN105258113A (en) Low-heating-value liquid and solid fluidized bed boiler and combustion technology
CN203605213U (en) Biomass-briquette-fired boiler
CN202074687U (en) Vertical biomass hot blast furnace
CN205002372U (en) Direct burming biomass hot -blast furnace of long -range feeding
CN102679390A (en) Compound furnace arch and compound secondary air structure for cooperatively controlling generation of nitrogen oxide (NOX)
CN203249237U (en) Spiral-input type pulverized coal burner
CN103791608B (en) The special heat smoke producer of brown coal coal dust
CN201606876U (en) Low-NOx coal burner
CN204438097U (en) A kind of stoker fired grate formula biomass granule boiler with turbulence chamber
CN204438095U (en) A kind of biomass granule fuel combustor
CN203231654U (en) Kiln tail gas treatment system
CN103940080B (en) Based on the middle temperature low oxygen content hot-blast stove of coal dust low oxygen combustion technology
CN202769642U (en) Post ignition hot gas producer
CN203177155U (en) Biomass smokeless boiler
CN206347563U (en) A kind of new burner
CN201954527U (en) Spiral automatic feed combustion boiler

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C25 Abandonment of patent right or utility model to avoid double patenting
AV01 Patent right actively abandoned

Granted publication date: 20130515

Effective date of abandoning: 20161012