CN103604128A - Method for utilizing waste heat of low-concentration combustible materials in tail gas of Slapple furnace - Google Patents
Method for utilizing waste heat of low-concentration combustible materials in tail gas of Slapple furnace Download PDFInfo
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- CN103604128A CN103604128A CN201310566784.XA CN201310566784A CN103604128A CN 103604128 A CN103604128 A CN 103604128A CN 201310566784 A CN201310566784 A CN 201310566784A CN 103604128 A CN103604128 A CN 103604128A
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- 239000007789 gas Substances 0.000 title claims abstract description 49
- 239000002918 waste heat Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000000463 material Substances 0.000 title 1
- 238000009826 distribution Methods 0.000 claims abstract description 28
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000002485 combustion reaction Methods 0.000 claims abstract description 15
- 238000005338 heat storage Methods 0.000 claims abstract description 13
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000003546 flue gas Substances 0.000 claims abstract description 8
- 230000004913 activation Effects 0.000 claims abstract description 7
- 239000000428 dust Substances 0.000 claims abstract description 6
- 238000011044 inertial separation Methods 0.000 claims abstract description 5
- 238000006477 desulfuration reaction Methods 0.000 claims abstract 4
- 230000023556 desulfurization Effects 0.000 claims abstract 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 239000011449 brick Substances 0.000 claims description 3
- 239000008399 tap water Substances 0.000 claims 1
- 235000020679 tap water Nutrition 0.000 claims 1
- 230000003213 activating effect Effects 0.000 description 9
- 229910052799 carbon Inorganic materials 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 239000002737 fuel gas Substances 0.000 description 3
- 239000003517 fume Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 239000013505 freshwater Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000000306 recurrent effect Effects 0.000 description 1
- 239000008234 soft water Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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- Chimneys And Flues (AREA)
- Treating Waste Gases (AREA)
Abstract
本发明提供一种将斯列普炉尾气中低浓度可燃物合理化焚烧再利用方法，热值低于450Kcal/m3的低浓度尾气，进入“U”型沉降室(5)进行惯性分离后进入补燃室(6)，在补燃室内通过配风室(7)配风、400℃-600℃蓄热体(16)引燃，使可燃尾气点燃，并在长烟道焚烧室（8）内充分燃烧，尾气在长烟道内逐渐扩容，燃烧后的高温烟气以低流速进入热管换热器(10),换热器内阻力低于10mmH20、省煤器(13)进行热量交换，最后尾气经脱硫除尘设备(15)后排入大气，在余热锅炉(9)内产生的高品位蒸汽返回蓄热室(2)供给斯列普活化炉(1)生产活性炭。此方法既实现了低品位余热充分利用，同时又降低了污染排放，系统可靠性高，操作维护简便。
The invention provides a method for rationally incinerating and reusing low-concentration combustibles in the tail gas of a Sleep furnace. The low-concentration tail gas with a calorific value lower than 450Kcal/ m3 enters a "U"-shaped settling chamber (5) for inertial separation and then enters the Supplementary combustion chamber (6), where the air is distributed through the air distribution chamber (7) and the heat storage body (16) at 400°C-600°C is ignited to ignite the combustible tail gas, and in the long flue combustion chamber (8) The internal combustion is complete, the exhaust gas gradually expands in the long flue, and the high-temperature flue gas after combustion enters the heat pipe heat exchanger (10) at a low flow rate, and the internal resistance of the heat exchanger is lower than 10mmH 2 0, and the economizer (13) performs heat exchange , and finally the tail gas is discharged into the atmosphere after passing through the desulfurization and dust removal equipment (15), and the high-grade steam generated in the waste heat boiler (9) returns to the regenerator (2) to supply the Sleep activation furnace (1) to produce activated carbon. This method not only realizes the full utilization of low-grade waste heat, but also reduces pollution emissions. The system has high reliability and is easy to operate and maintain.
Description
The present invention is that application number is 201210048224.0, the dividing an application of denomination of invention " low-concentration combustibles bootstrap system and method in a kind of Stepple furnace tail gas ".
Technical field
The present invention relates to the residual-heat utilization method of low-concentration combustibles, especially relate to the using waste heat from tail gas utilization of Slapple activating furnace low concentration and field of purification.
Background technology
Utilizing Stepple furnace to produce in active carbon process, at high temperature there is specific reaction with oxygen or hydrogen or steam in coal, produces special gas, liquid or solid product, produces a large amount of gas by-products, emits a large amount of heat.Can supervene fuel gas and the solid combustible tail gas of low concentration, because its concentration, temperature are all very low, calorific value is less than 400Kcal/Nm simultaneously
3, and due to the restriction of equipment, fresh water (FW) equality factor, be difficult to direct utilization." waste gas " that is often considered to not directly utilize.Mostly adopt at present the mode of discharging directly into atmosphere, not only polluted atmosphere but also cause energy waste.The method that patent of invention CN200810119157.0 " method of comprehensive utilization of activation furnace flue gas " and existing document adopt, does not all relate to afterburning and the burning of low concentration tail gas combustible, can not make full use of the low-concentration combustibles in tail gas.Under energy-saving and cost-reducing large policy, the energy waste being brought by it and environmental problem, caused national attention.
Summary of the invention
The present invention fully burns low-concentration combustibles in Stepple furnace tail gas, realize the low-grade using waste heat from tail gas utilization of Slapple activating furnace, the low grade residual heat that provide a kind of low concentration tail gas surely to fire burning, not to affect activating process utilizes method, and realizes the object of tail gas clean-up.
The technical solution used in the present invention is: low-concentration combustibles residual-heat utilization method in a kind of Stepple furnace tail gas, calorific value is lower than 450Kcal/m
3low concentration tail gas, entering " U " type expansion chamber (5) carries out entering afterburning chamber (6) after inertial separation, in afterburning chamber, by distribution plenum (7) air distribution, 400 ℃ of-600 ℃ of heat storages (16), ignite, flammable tail gas is lighted, and fully burning in long flue Burning Room (8), tail gas is dilatation gradually in long flue, and the high-temperature flue gas after burning enters heat exchange of heat pipe (10) with low flow velocity, and heat exchanger internal resistance is lower than 10mmH
20, economizer (13) carries out exchange heat, and last tail gas enters atmosphere after desulfurating dust-removing equipment (15).The high-grade steam producing in waste heat boiler (9) returns to regenerator (2) and supplies with Slapple activating furnace (1) production active carbon.
Described residual-heat utilization method is realized by bootstrap system, and described bootstrap system comprises: Slapple activating furnace (1), regenerator (2) flue shutter (3), expansion chamber (5), afterburning chamber (6), distribution plenum (7), long flue Burning Room (8), waste heat boiler (9), heat exchange of heat pipe (10), steam return line (11), economizer (12), water softener (13), desulfurating dust-removing equipment (15), heat storage (16), described Slapple activating furnace (1) is connected with regenerator (2), regenerator (2) afterbody is provided with flue, flue shutter (3) is installed in flue, described expansion chamber (5) is connected with flue, the distribution plenum (7) of array distribution air distribution outlet is installed and heat storage (16) for afterburning in expansion chamber (5), long flue Burning Room (8) is installed at distribution plenum (7) rear portion, long flue Burning Room (8) afterbody connects fume emission passage, is disposed with heat exchanger (10) in fume emission passage, economizer (12), fume emission passage tail end connects desulfurating dust-removing equipment (15), described heat exchanger (10) carries out heat exchange with waste heat boiler (9), economizer (12) is communicated with water softener (13), running water is introduced into water softener (13), enter again economizer (12), after enter waste heat boiler (9), high-grade steam through waste heat boiler heating returns to regenerator (2) through steam recurrent canal (11), supplies with Slapple activating furnace (1) and produces active carbon, a plurality of distribution plenums (7) are installed in described afterburning chamber (6), and distribution plenum, along the air distribution point of height and circumferential arrangement One's name is legion, is provided with checker brick multiaspect heat storage (16) in distribution plenum.
Heat exchanger adopts low flow velocity heat convection, and described flow velocity is less than 4m/s.
The length of described long flue Burning Room (8) is the distance of 3 times of upper lower drums.
The invention has the beneficial effects as follows: adopt multiple spot air distribution incineration technology, realized the smooth combustion under steady flame constant temperature of low concentration tail gas; Adopt length apart from combustion technology, increased the exhaust combustion time, fuel gas is realized dilatation gradually, has reduced volume heat load (<120kw/m
3) and mobile local resistance, solved furnace wall heatproof problem; Heat exchanger adopts low flow velocity heat convection, and heat exchanger resistance is less than 50mmH
2o, avoids UTILIZATION OF VESIDUAL HEAT IN to affect the technique (being that stove keeps micro-negative pressure in reacting furnace) of active carbon production line.By the enforcement of these technology, under the condition of assurance process for preparing activated carbon, realized low-grade tail gas and fully burned utilization, reduced again disposal of pollutants simultaneously, system reliability is high, simple and convenient operation and maintenance.
Accompanying drawing explanation
In figure: 1, activation furnace, 2, regenerator, 3, flue shutter, 4, former flue, 5, expansion chamber, 6, afterburning chamber, 7, distribution plenum, 8, long flue Burning Room, 9, waste heat boiler, 10, heat exchange of heat pipe, 11, steam return line, 12, economizer, 13, water softener, 14, running water, 15 desulfurating dust-removing equipments, 16 heat storages.
The specific embodiment
Below in conjunction with drawings and Examples, the invention will be further described (the 3000 kg/d output active carbon production lines of take are example).
As shown in Figure 1, low-concentration combustibles residual-heat utilization method in a kind of Stepple furnace tail gas, calorific value is lower than 450Kcal/m
3low concentration tail gas, entering " U " type expansion chamber (5) carries out entering afterburning chamber (6) after inertial separation, in afterburning chamber, by distribution plenum (7) air distribution, 400 ℃ of-600 ℃ of heat storages (16), ignite, flammable tail gas is lighted, and fully burning in long flue Burning Room (8), tail gas is dilatation gradually in long flue, and the high-temperature flue gas after burning enters heat exchange of heat pipe (10) with low flow velocity, and heat exchanger internal resistance is lower than 10mmH
20, economizer (13) carries out exchange heat, and last tail gas enters atmosphere after desulfurating dust-removing equipment (15).The high-grade steam producing in waste heat boiler (9) returns to regenerator (2) and supplies with Slapple activating furnace (1) production active carbon.
The system that realizes above-mentioned residual-heat utilization method is as follows: the regenerator 2 former flues 4 in rear portion are installed flue shutter 3, by from regenerator out containing the tail gas of low-concentration combustible gas, introduce residual neat recovering system, first tail gas enter " U " type flue 5, and tail gas carries out inertial separation, and flying dust is deposited and discharged, enter afterwards afterburning chamber 6, a plurality of distribution plenums 7 of afterburning indoor location, distribution plenum height is identical with lower drum distance on waste heat boiler, a plurality of air distribution points of distribution plenum circumferential arrangement.The step of afterburning, for first heating heat storage 16 by auxiliary combustion, makes regenerator temperature reach 400-600 ℃, then with the checker brick multiaspect heat storage of heat storage, ignites, and fuel gas is lighted.Tail gas fully burns in the interior realization of long flue Burning Room 8, and tail gas increases at long flue burning time, and gas is realized dilatation gradually.High-temperature flue gas after burning, enters heat exchange of heat pipe 10 successively, and economizer 12 carries out heat exchange with the working medium in heat exchanger, and tail gas is finally by desulfurating dust-removing equipment 15, except entering atmosphere after dust and sulfur.Working-medium water in economizer 12 is from water softener 13, soft water after economizer preheating 12 preheatings is generating high-grade steam in waste heat boiler after heat exchange of heat pipe 10 heat exchange, steam turns back to regenerator through steam return line 11, supplies with Slapple activating furnace 1 and produces active carbon.
The results showed, adopt after this low concentration residual-heat utilization method, finally enter airborne tail gas and obtain cleaning, the exhaust emissions requirement that is up to state standards.Combustible in tail gas is fully burned.The heat discharging can turn back to active carbon production line, also may be used on heating for residential area etc.Energy-saving and emission-reduction have been realized.
The above-mentioned specific embodiment is used for the present invention that explains, rather than limits the invention, and in the protection domain of spirit of the present invention and claim, any modification and change that the present invention is made, all fall into protection scope of the present invention.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310566784.XA CN103604128B (en) | 2012-02-29 | 2012-02-29 | A method for utilizing waste heat of low-concentration combustibles in Sleep furnace tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310566784.XA CN103604128B (en) | 2012-02-29 | 2012-02-29 | A method for utilizing waste heat of low-concentration combustibles in Sleep furnace tail gas |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210048224 Division CN103292333B (en) | 2012-02-29 | 2012-02-29 | System for utilizing waste heat of low-concentration combustible material in tail gas of Slapple furnace |
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| Publication Number | Publication Date |
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| CN103604128A true CN103604128A (en) | 2014-02-26 |
| CN103604128B CN103604128B (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310566784.XA Expired - Fee Related CN103604128B (en) | 2012-02-29 | 2012-02-29 | A method for utilizing waste heat of low-concentration combustibles in Sleep furnace tail gas |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968673A (en) * | 2014-05-13 | 2014-08-06 | 神华集团有限责任公司 | Waste heat utilization device of tail gas of Serp activation furnace and tail gas utilization method |
| CN110805910A (en) * | 2019-10-31 | 2020-02-18 | 安徽中泰创展环境科技股份有限公司 | Secondary combustion chamber for household garbage flue gas |
| CN113566596A (en) * | 2021-07-26 | 2021-10-29 | 宁夏廷远活性炭有限公司 | Device and method for recycling waste heat of tail gas of activated carbon carbonization furnace |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201096352Y (en) * | 2007-11-05 | 2008-08-06 | 邹炎 | Gas-solid mixing combustion purifying and heat distribution system |
| CN101608794A (en) * | 2009-07-27 | 2009-12-23 | 太原嘉能动力科技有限公司 | The UTILIZATION OF VESIDUAL HEAT IN method of low-concentration combustibles |
| CN101705331A (en) * | 2009-11-06 | 2010-05-12 | 清华大学 | Sensible heat recovering system and method of tail gas of converter with afterburning |
-
2012
- 2012-02-29 CN CN201310566784.XA patent/CN103604128B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201096352Y (en) * | 2007-11-05 | 2008-08-06 | 邹炎 | Gas-solid mixing combustion purifying and heat distribution system |
| CN101608794A (en) * | 2009-07-27 | 2009-12-23 | 太原嘉能动力科技有限公司 | The UTILIZATION OF VESIDUAL HEAT IN method of low-concentration combustibles |
| CN101705331A (en) * | 2009-11-06 | 2010-05-12 | 清华大学 | Sensible heat recovering system and method of tail gas of converter with afterburning |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103968673A (en) * | 2014-05-13 | 2014-08-06 | 神华集团有限责任公司 | Waste heat utilization device of tail gas of Serp activation furnace and tail gas utilization method |
| CN110805910A (en) * | 2019-10-31 | 2020-02-18 | 安徽中泰创展环境科技股份有限公司 | Secondary combustion chamber for household garbage flue gas |
| CN113566596A (en) * | 2021-07-26 | 2021-10-29 | 宁夏廷远活性炭有限公司 | Device and method for recycling waste heat of tail gas of activated carbon carbonization furnace |
| CN113566596B (en) * | 2021-07-26 | 2024-09-27 | 宁夏廷远活性炭有限公司 | A device and method for recovering waste heat from tail gas of activated carbon carbonization furnace |
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| CN103604128B (en) | 2014-12-24 |
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