CN202284786U - Boiler using waste heat of coking furnace flue gas - Google Patents
Boiler using waste heat of coking furnace flue gas Download PDFInfo
- Publication number
- CN202284786U CN202284786U CN2011203253329U CN201120325332U CN202284786U CN 202284786 U CN202284786 U CN 202284786U CN 2011203253329 U CN2011203253329 U CN 2011203253329U CN 201120325332 U CN201120325332 U CN 201120325332U CN 202284786 U CN202284786 U CN 202284786U
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- flue gas
- flue
- coking furnace
- waste heat
- economizer
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Abstract
A boiler using the waste heat of coking furnace flue gas is disclosed, which comprises a bypass flue, a coal economizer, a boiler drum and a flue gas induced-draft fan, wherein the bypass flue is communicated with a coking furnace underground flue; an evaporator and the flue gas induced-draft fan are installed on the bypass flue; the evaporator is connected with the boiler drum via an ascending tube and a descending tube; the coal economizer is installed on the rear part of the evaporator; the inlet of the coal economizer is connected with a boiler water feeding tube, and the outlet of the coal economizer is connected with the boiler drum; the rear part of the coal economizer is connected with the flue gas induced-draft fan; and the outlet of the flue gas induced-draft fan is communicated with the rear of a flap valve on the underground flue and a chimney respectively. The boiler using the waste heat of coking furnace flue gas disclosed by the utility model improves traditional coking production process, as well as can efficiently recover the waste heat of coking furnace flue gas, avoid the direct emission of lots of high-temperature flue gas, improve the level of energy utilization, and realize energy conservation and emission reduction.
Description
Technical field:
The utility model relates to the improvement of the existing production technology of coking furnace, develops a kind of coking furnace flue gas waste heat boiler.
Background technology:
In coking production and gas purification process, containing a large amount of residual heat resources, there is great recycling to be worth, therefore, the coke-oven plant is carrying out having great potential aspect residual heat resources utilization and the energy-saving and emission-reduction.The production of existing coke-oven plant belongs to extensive production and operation mode, and efficiency of energy utilization is low, and residual heat resources are enriched but do not obtained effective recycling, and it is representative that coking industry has the typical case at home.The main direction of recycling of coking production residual heat resources is for reclaiming red burnt physics heat, raw coke oven gas and burnt gas sensible heat, and wherein, red burnt sensible heat accounts for and infeeds about 35% of coke oven heat, generally is familiar with.Coal chemical enterprise much adopts or is about to adopt Dry Quenching Technology to substitute the traditional wet quenching both at home and abroad now, adopts Dry Quenching Technology to carry out cogeneration, has not only saved the water power consumption of wet quenching; And it is low to have operating cost, and equipment does not corrode, advantages such as long service life; The working environment and the disposal of pollutants of coking production have been improved greatly; And through cogeneration, created considerable economic, reduced the reduction of discharging pressure of relevant enterprise.But raw coke oven gas and burnt gas sensible heat do not reclaim in coal chemical enterprise, even research seldom.The burnt gas exhaust gas volumn strengthens, and is different according to single kiln output, generally is several ten thousand to twenties0000 exhaust gas volumn, and temperature is between 260--300 ℃, and this part heat accounts for 17%, and flue gas directly discharges through chimney, causes the huge waste of the energy and the pollution of environment.
Summary of the invention:
The purpose of the utility model just is to overcome the deficiency that exists in the above-mentioned prior art; And a kind of coking furnace flue gas waste heat boiler is provided; This boiler reduced investment and efficiency is high can solve coking furnace burning mass waste gas directly to discharge, and causes energy huge waste and problem of environmental pollution.
As above design, the technical scheme of the utility model is: a kind of coking furnace flue gas waste heat boiler is characterized in that: comprise bypass flue, evaporimeter, economizer, drum and smoke induced draught fan; The bypass flue is communicated with the coking furnace underground flue; Evaporimeter and smoke induced draught fan are installed on the bypass flue, and evaporimeter is connected drum through tedge with down-comer, and economizer is installed at the rear portion of evaporimeter; The import of economizer connects boiler feed pipe, and outlet links to each other with drum through outlet pipe; The rear portion of economizer is connected with smoke induced draught fan, the outlet of smoke induced draught fan respectively with underground flue on the rear portion and the chimney of flap valve be communicated with.
The import and export of above-mentioned bypass flue is separately positioned on the front and rear portions of the flap valve on the coking furnace underground flue.
Above-mentioned bypass flue is provided with smoke regulating valve and stop valve, and smoke regulating valve is installed between the import and evaporimeter of bypass flue, and stop valve is installed in the exit of smoke induced draught fan.
Above-mentioned evaporimeter adopts heat pipe evaporator or finned-tube evaporator.
Above-mentioned economizer adopts heat pipe economizer.
The utility model has the advantages that:
1, the evaporimeter of the utility model adopts heat pipe or finned-tube evaporator, can be implemented in enhanced heat exchange under the low temperature difference.
2, the economizer of the utility model adopts heat pipe economizer as the heat transfer element high efficient heat exchanging, can avoid the dew point corrosion problem that causes because of the flue gas low-temperature discharging simultaneously.
3, the utility model can make itself and underground flue control valve realize interlock, thereby guarantee that furnace pressure is normal through furnace pressure control smoke regulating valve and smoke induced draught fan variable frequency adjustment.
4, can reclaim coking furnace flue gas waste heat effectively, avoid a large amount of high-temperature flue gas directly to discharge, improve the using energy source level, realize energy-saving and emission-reduction.
Description of drawings:
Fig. 1 is the process chart of the utility model.
Fig. 2 is a kind of structural representation of the utility model.
The specific embodiment:
Coking furnace flue gas waste heat boiler adopts natural circulation mode, is divided into evaporimeter and economizer two parts.
As shown in Figure 1: in the flue gas system: as to establish flap valve (5) on the underground flue (1), establish smoke regulating valve (6), evaporimeter (3), stop valve (7), smoke induced draught fan (8), chimney (14) on the bypass flue (2).
As shown in Figure 2: the utility model is provided with and is independent of on former underground flue (1) the bypass flue (2) in addition; Evaporimeter (3) is connected drum (10) through down-comer (11) with tedge (12); Economizer (4) is set behind the evaporimeter (3); The import of economizer (4) connects boiler feed pipe (9), and outlet links to each other with drum (6) through outlet pipe (13).
The course of work of the utility model is:
When 1, coking furnace flue gas waste heat boiler was worked, about 260--300 ℃ flue gas from underground flue is drawn got into evaporimeter through bypass flue control valve; In evaporimeter, carry out high efficient heat exchanging with the heat pipe heating surface, get into the high-efficiency heat pipe economizer subsequently, heat exchange is main with heat convection; Flue gas is through reducing to behind the economizer about 150 ℃; Reclaim fume afterheat to greatest extent, the flue gas after the heat release is after flue gate valve, air-introduced machine are delivered to former underground flue flap valve, through smoke stack emission.
2, deliver to heat pipe economizer from the boiler feedwater of oxygen-eliminating device; Get into drum after absorbing certain heat, the water of drum is through the natural cycle system heating, through the down-comer entering evaporimeter of evaporator; After becoming steam water interface; Tedge through evaporator is got back to drum, and steam water interface carries out carbonated drink separation in drum, and it is defeated outward to produce the mesolow saturated vapor.
Claims (5)
1. a coking furnace flue gas waste heat boiler is characterized in that: comprise bypass flue, evaporimeter, economizer, drum and smoke induced draught fan; The bypass flue is communicated with the coking furnace underground flue; Evaporimeter and smoke induced draught fan are installed on the bypass flue, and evaporimeter is connected drum through tedge with down-comer, and economizer is installed at the rear portion of evaporimeter; The import of economizer connects boiler feed pipe, and outlet links to each other with drum through outlet pipe; The rear portion of economizer is connected with smoke induced draught fan, the outlet of smoke induced draught fan respectively with underground flue on the rear portion and the chimney of flap valve be communicated with.
2. coking furnace flue gas waste heat boiler according to claim 1, it is characterized in that: the import and export of above-mentioned bypass flue is separately positioned on the front and rear portions of the flap valve on the coking furnace underground flue.
3. coking furnace flue gas waste heat boiler according to claim 1; It is characterized in that: above-mentioned bypass flue is provided with smoke regulating valve and stop valve; Smoke regulating valve is installed between the import and evaporimeter of bypass flue, and stop valve is installed in the exit of smoke induced draught fan.
4. coking furnace flue gas waste heat boiler according to claim 1 is characterized in that: above-mentioned evaporimeter adopts heat pipe evaporator or finned-tube evaporator.
5. coking furnace flue gas waste heat boiler according to claim 1 is characterized in that: above-mentioned economizer adopts heat pipe economizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203253329U CN202284786U (en) | 2011-09-01 | 2011-09-01 | Boiler using waste heat of coking furnace flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203253329U CN202284786U (en) | 2011-09-01 | 2011-09-01 | Boiler using waste heat of coking furnace flue gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202284786U true CN202284786U (en) | 2012-06-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203253329U Expired - Lifetime CN202284786U (en) | 2011-09-01 | 2011-09-01 | Boiler using waste heat of coking furnace flue gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202284786U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305394A (en) * | 2011-09-01 | 2012-01-04 | 天津华能北方热力设备有限公司 | Coking furnace flue-gas waste-heat boiler |
| CN103047637A (en) * | 2013-01-25 | 2013-04-17 | 中冶赛迪工程技术股份有限公司 | Coke furnace flue gas waste heat and ascending pipe coal gas waste heat combined recycling system |
| CN103994667A (en) * | 2014-05-22 | 2014-08-20 | 西安交通大学 | Waste heat recovery system of steel rolling heating furnace |
-
2011
- 2011-09-01 CN CN2011203253329U patent/CN202284786U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305394A (en) * | 2011-09-01 | 2012-01-04 | 天津华能北方热力设备有限公司 | Coking furnace flue-gas waste-heat boiler |
| CN103047637A (en) * | 2013-01-25 | 2013-04-17 | 中冶赛迪工程技术股份有限公司 | Coke furnace flue gas waste heat and ascending pipe coal gas waste heat combined recycling system |
| CN103994667A (en) * | 2014-05-22 | 2014-08-20 | 西安交通大学 | Waste heat recovery system of steel rolling heating furnace |
| CN103994667B (en) * | 2014-05-22 | 2016-02-24 | 西安交通大学 | A kind of heater for rolling steel residual neat recovering system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Coking furnace flue-gas waste-heat boiler Effective date of registration: 20130726 Granted publication date: 20120627 Pledgee: Pudong Shanghai Development Bank Limited by Share Ltd Tianjin branch Pledgor: Tianjin Huaneng Thermal Equipment Co., Ltd. Registration number: 2013120000022 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20140806 Granted publication date: 20120627 Pledgee: Pudong Shanghai Development Bank Limited by Share Ltd Tianjin branch Pledgor: Tianjin Huaneng Thermal Equipment Co., Ltd. Registration number: 2013120000022 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Coking furnace flue-gas waste-heat boiler Effective date of registration: 20141121 Granted publication date: 20120627 Pledgee: Pudong Shanghai Development Bank Limited by Share Ltd Tianjin branch Pledgor: Tianjin Huaneng Thermal Equipment Co., Ltd. Registration number: 2014120000061 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20190929 Granted publication date: 20120627 Pledgee: Pudong Shanghai Development Bank Limited by Share Ltd Tianjin branch Pledgor: Tianjin Huaneng Thermal Equipment Co., Ltd. Registration number: 2014120000061 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120627 |
|
| CX01 | Expiry of patent term |