CN201293309Y - U type arrangement carbide waste heat boiler - Google Patents

U type arrangement carbide waste heat boiler Download PDF

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Publication number
CN201293309Y
CN201293309Y CNU2008202183153U CN200820218315U CN201293309Y CN 201293309 Y CN201293309 Y CN 201293309Y CN U2008202183153 U CNU2008202183153 U CN U2008202183153U CN 200820218315 U CN200820218315 U CN 200820218315U CN 201293309 Y CN201293309 Y CN 201293309Y
Authority
CN
China
Prior art keywords
waste heat
boiler
flue gas
disposed
calcium carbide
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.)
Expired - Lifetime
Application number
CNU2008202183153U
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Chinese (zh)
Inventor
于铁刚
于润福
向泽浚
田立久
李新言
遇萍
高波
王杰
魏立新
明勇
路素清
刘迎春
关亚良
曲纪源
史克伦
葛岩
周克海
张庆红
刘文军
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.)
Anshan Boiler Factory Co Ltd
Original Assignee
Anshan Boiler Factory 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 Anshan Boiler Factory Co Ltd filed Critical Anshan Boiler Factory Co Ltd
Priority to CNU2008202183153U priority Critical patent/CN201293309Y/en
Application granted granted Critical
Publication of CN201293309Y publication Critical patent/CN201293309Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relate to a heat supply facility, especially a U-shaped arranged calcium carbide waste heat boiler, which is characterized in that: a overheat segment, a high temperature segment and a convection tube bank are disposed on the downward segment of the U-shaped arranged flue gas channel; a low temperature convection tube bank and a coal economizer are disposed on the upward segment of the U-shaped arranged shaft well flue gas channel; a dust falling door is disposed on the bottom of the U-shaped arranged flue gas channel; a drum and a superheater outlet collecting box are disposed on the top of the boiler; and an ascending pipe and a descending pipe are disposed therebetween. The U-shaped arranged calcium carbide waste heat boiler in the utility model can reduce the temperature of the flue gas to below 200 degrees centigrade, meet the temperature requirement of cloth bag dedusting; and can use the superheated steam generated in waste heat recuperation to drive generating set; thereby, the utility model can not only effectively recover the waste heat, but also purify the flue gas to meet the requirement of energy saving and emission reducing.

Description

A kind of U type is arranged the calcium carbide waste heat boiler
Technical field
The utility model relates to a kind of energy-conserving and environment-protective facility, and particularly a kind of U type is arranged the calcium carbide waste heat boiler.
Background technology
Calcium carbide is the main production raw material of polyvinyl chloride.China's calcium carbide output is 5,600,000 tons, more than 250 families of the above calcium carbide of China's medium-scale manufacturing enterprise, and manufacturer mainly is distributed in the west area that generating capacity is relatively concentrated.Calcium carbide production can produce carries 8~20g/Nm 3The 400-600 of dust ℃ waste heat flue gas.Calcium carbide is produced when being social create beneficial result, also severe contamination human environment.In China, only a few family units reclaim with L type waste heat boiler the calcium carbide waste heat in the west area, and all the other all arrange into atmosphere.With existing L type waste heat boiler recovery waste heat, only produce saturated vapor on the one hand and be used for producing, can not produce superheated steam generation, utilization rate is on the low side, and the boiler operatiopn effect is very bad.Smoke characteristic in view of the calcium carbide flue gas, cause the L type calcium carbide waste heat boiler of operation now to expose a lot of problems: 1, the waste heat boiler heating surface area is arranged wretched insufficiency, cause the boiler heat absorption capacity on the low side, boiler thermal output does not reach requirement, cause the boiler flue gas outlet temperature up to 280-300 ℃, easily burn filter bag of dust collector, so that run unit has to take to add the cigarette temperature that the method for converting cold air is reduced to the deduster inlet, increase the power consumption of afterbody air-introduced machine artificially.2, the waste heat boiler heating surface arrangement is unreasonable, causes boiler heating surface dust stratification, stifled ash seriously, and ash-removal effect is poor.Influence the normal operation of boiler, have to take hand sweeping.3, owing to boiler heating surface dust stratification, stifled ash, make the heating surface heat transfer deterioration of boiler, have a strong impact on the thermal efficiency of boiler.The local flue gas circulation area of boiler is diminished, make that the flue gas flow rate at this position is too high, make boiler produce serious concentrated wear.And the influence ventilation, make the flue gas resistance of boiler become big, cause afterbody air-introduced machine power consumption to increase.4, the steel ball process for deashing that adopts of boiler is not considered the particularity of the characteristics of structure of boiler and dust stratification, stifled ash, the ash disposal difficulty, and the steel ball loss is serious.5, the waste heat boiler heating surface space for maintenance is narrow and small, a lot of positions even do not reserve space for maintenance, the repair and maintenance difficulty.6, boiler steel structure does not have the thermal stress compensation means, and the backplate of boiler ftractures easily during boiler operatiopn, causes boiler to leak out seriously, and the furnace wall structure of boiler is unreasonable simultaneously, causes the boiler radiation loss higher.7, boiler bottom ash bucket structure is generally unreasonable, and volume is too little and too near with the flue interface.In case deashing when operation when the ash amount is excessive, will stop up exhaust gases passes, influence system's operation.8, smoke inlet lateral deviation in boiler top causes the flue gas segregation easily, easily makes heating surface produce problems such as concentrated wear.
Summary of the invention
The utility model has overcome the defective of above-mentioned existence, and purpose provides a kind of waste heat boiler that can adapt to calcium carbide production, and effectively recovery waste heat can purify flue gas again, satisfies the U type of current energy-saving and emission-reduction requirement and arranges the calcium carbide waste heat boiler.
The utility model U type is arranged calcium carbide waste heat boiler content Description:
The utility model U type is arranged the calcium carbide waste heat boiler, it is characterized in that: descending section of the exhaust gases passes of arranging in the U type, arrange superheat section, high temperature section convection bank successively; Up section of the vertical shaft exhaust gases passes of arranging in the U type arranged low temperature convection bank and economizer according to this, and the exhaust gases passes bottom that the U type is arranged is provided with ash-dropping door.Boiler top layout drum and super-heater exit case, centre are provided with tedge and down-comer.
The utility model U type is arranged the calcium carbide waste heat boiler, flue-gas temperature can be dropped to below 200 ℃, satisfies the requirement of bag-type dust to temperature; The superheated steam that waste heat recovery can also be produced drives the generating set generating.Effectively recovery waste heat can purify the requirement that flue gas satisfies energy-saving and emission-reduction again.
Description of drawings
Fig. 1 is that the U type is arranged calcium carbide waste heat boiler structural representation
Among the figure: the 1st, superheat section, the 2nd, high temperature section convection bank, the 3rd, low temperature convection bank, the 4th, economizer, the 5th, drum, the 6th, tedge, the 7th, down-comer, the 8th, super-heater exit case, the 9th, ash-dropping door.
The specific embodiment
The utility model U type is arranged that the calcium carbide waste heat boiler is achieved in that to do below in conjunction with accompanying drawing and is specified.See Fig. 1, a kind of U type is arranged the calcium carbide waste heat boiler, and descending section of the exhaust gases passes of arranging in the U type arranged superheat section 1, high temperature section convection bank 2 successively; Up section of the exhaust gases passes of arranging in the U type arranged low temperature convection bank 3 and economizer 4 according to this, and the exhaust gases passes bottom of arranging in the U type is provided with ash-dropping door 9.Boiler top layout drum 5 and super-heater exit case 8, centre are provided with tedge 6 and down-comer 7.
The U type arranges that calcium carbide exhaust-heat boiler flue gas flow process is: flue gas passes through superheat section 1, high temperature section convection bank 2 from top to bottom successively; After 180 ° of flue gases turn to again from bottom to top, according to this by low temperature convection bank 3 and economizer 4.Ash in the flue gas is inertial settling through halfturn the time, discharges through ash-dropping door 9.
The U type arranges that calcium carbide waste heat boiler carbonated drink flow process is: feedwater at first enters economizer 4, after economizer 4 preheatings, enter drum 5, enter high temperature section convection bank 2 and low temperature convection bank 3 by down-comer 7 again, get back to drum by tedge 6 again, after carbonated drink is separated, it is overheated that saturated vapor enters superheater 1 continuation, and last superheated steam is drawn by super-heater exit case 8.
Characteristics are as follows:
1, U-shaped arrangement carbide waste heat boiler, flue gas in the bottom 180 ° turn to, through the inertia branch But the dust natural subsidence from 50% reduces the boiler original discharge concentration greatly, alleviates simultaneously cloth The pressure of bag dedusting finally makes soot emissions satisfy environmental requirement;
2, the waste heat boiler heating surface area arranges that enough waste heat can reclaim to greatest extent, with The time satisfy the bag dedusting to the requirement of temperature;
3, the each several part heating surface adopts the coarse pitch in-line arrangement, and flue gas is transversal flow. Prevent Boiler heating surface dust stratification, stifled ash are beneficial to deashing;
4, abnormal conditions and safeguard protection as design focal point, the fault that may occur is adopted Get the cascade protection measure, guarantee that total system is in optimal operational condition;
5, special-purpose powerful dust remover is set, effectively solves the dust stratification problem of heating surface;
6, boiler steel structure is provided with the thermal stress compensation means, and backplate does not ftracture when guaranteeing boiler operatiopn;
7, rational furnace wall structure is set, reduces the boiler radiation loss.

Claims (1)

1, a kind of U type is arranged the calcium carbide waste heat boiler, it is characterized in that: descending section of the exhaust gases passes of arranging in the U type, arrange superheat section (1), high temperature section convection bank (2) successively; Up section of the exhaust gases passes of arranging in the U type, arrange low temperature convection bank (3) and economizer (4) according to this, the silo bottom of arranging in the U type is provided with ash-dropping door (9), boiler top layout drum (5) and super-heater exit case (8), and the centre is provided with tedge (6) and down-comer (7).
CNU2008202183153U 2008-10-06 2008-10-06 U type arrangement carbide waste heat boiler Expired - Lifetime CN201293309Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008202183153U CN201293309Y (en) 2008-10-06 2008-10-06 U type arrangement carbide waste heat boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008202183153U CN201293309Y (en) 2008-10-06 2008-10-06 U type arrangement carbide waste heat boiler

Publications (1)

Publication Number Publication Date
CN201293309Y true CN201293309Y (en) 2009-08-19

Family

ID=41006788

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU2008202183153U Expired - Lifetime CN201293309Y (en) 2008-10-06 2008-10-06 U type arrangement carbide waste heat boiler

Country Status (1)

Country Link
CN (1) CN201293309Y (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102086481A (en) * 2011-01-30 2011-06-08 中冶赛迪工程技术股份有限公司 Coal gas waste heat boiler
CN105783534A (en) * 2014-12-26 2016-07-20 宝钢工程技术集团有限公司 Vertical type converter waste heat boiler and use method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102086481A (en) * 2011-01-30 2011-06-08 中冶赛迪工程技术股份有限公司 Coal gas waste heat boiler
CN102086481B (en) * 2011-01-30 2012-10-24 中冶赛迪工程技术股份有限公司 Coal gas waste heat boiler
CN105783534A (en) * 2014-12-26 2016-07-20 宝钢工程技术集团有限公司 Vertical type converter waste heat boiler and use method thereof
CN105783534B (en) * 2014-12-26 2017-11-28 宝钢工程技术集团有限公司 Vertical Converter Residual Heat Boiler and its application method

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CX01 Expiry of patent term
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Granted publication date: 20090819