CN203011163U - Waste heat utilization device of sintering machine - Google Patents
Waste heat utilization device of sintering machine Download PDFInfo
- Publication number
- CN203011163U CN203011163U CN201220660725XU CN201220660725U CN203011163U CN 203011163 U CN203011163 U CN 203011163U CN 201220660725X U CN201220660725X U CN 201220660725XU CN 201220660725 U CN201220660725 U CN 201220660725U CN 203011163 U CN203011163 U CN 203011163U
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- waste heat
- heat boiler
- temperature flue
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- flue gas
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The utility model relates to a waste heat utilization device, in particular to the waste heat utilization device of a sintering machine, belonging to the technical field of machines. The waste heat utilization device structurally comprises a waste heat boiler, and a circular cooler which is communicated with the waste heat boiler. The improvement of the waste heat utilization device is that a compensation hot air stove is further arranged between the waste heat boiler and the circular cooler, the compensation hot air stove is provided with an air inlet end and two air outlet ends, the air inlet end is respectively communicated with a liquefied gas pipe, a coal gas pipe and a combustion supporting air pipe, one air outlet end is communicated with the waste heat boiler through an air outlet pipeline corresponding to the air outlet end, and the other air outlet end is communicated with a high-temperature smoke pipeline through an air outlet pipeline corresponding to the other air outlet end. The waste heat utilization device of the sintering machine has the beneficial effects that the economic benefit is obviously increased, the operation of a unit is stabilized and the service life of the unit is prolonged.
Description
Technical field
The utility model relates to a kind of residual heat using device, and especially a kind of sintering machine residual heat using device belongs to
In field of mechanical technique.
Background technology
Existing 300m
2half can join a set of residual heat using device sintering machine, its principle is to utilize central cooler technique one, the hot blast of two sections produces steam-electric power by waste heat boiler, and the flue-gas temperature of central cooler technique one section (high temperature section) is about 350-400 (450max) ℃, the flue-gas temperature of central cooler technique two sections (middle-temperature sections) is about 250-300 ℃, because the flue-gas temperature of central cooler, flowed fluctuation is larger, make waste heat boiler be difficult to continue normal production, cause the Turbo-generator Set operating rate not reach stability requirement (being not less than 92%), be badly in need of a kind of device that meets the normal steady production of waste heat boiler.
The utility model content
The utility model wants the technical solution problem to be: the defect existed for prior art proposes a kind of sintering
The machine residual heat using device, meet the needs of steady production.
The utility model is the technical solution problem by the following technical programs, a kind of sintering machine residual heat using device, comprise waste heat boiler, the central cooler be communicated with waste heat boiler, described central cooler is provided with two groups, by high-temperature flue gas pipeline and middle temperature flue, with waste heat boiler, be communicated with respectively, the central cooler of described high-temperature flue gas pipeline to waste heat boiler section is provided with the high-temperature flue gas control valve, the central cooler of described middle temperature flue to waste heat boiler section is provided with middle temperature smoke regulating valve, described height, middle temperature flue end is respectively equipped with height, middle temperature flue diffusion valve, its improvements are: also be provided with the compensation hot-blast stove between described waste heat boiler and central cooler, described compensation hot-blast stove is provided with an inlet end and two outlet sides, described inlet end respectively with liquefaction tracheae, gas pipe and combustion-aid air pipe are communicated with, a described outlet side is communicated with waste heat boiler by corresponding with it outlet pipe, another outlet side is by corresponding with it outlet pipe and described high-temperature flue gas pipeline communication.
Wherein, the access port of the outlet pipe of described compensation hot-blast stove and described high-temperature flue gas pipeline is located between described high-temperature flue gas control valve and described waste heat boiler.
Be equipped with valve on the outlet pipe of described compensation hot-blast stove and admission line.
In conjunction with actual conditions, after the compensation hot-blast stove comes into operation, can solve three kinds of technical problems under operating mode:
1, sintering circular-cooler flue-gas temperature, flow are normal, when institute's producing steam meets the steam turbine power generation needs, in two kinds of situation: a kind of is that gaspipe network is while having coal gas to have more than needed (gas to generate electricity comes into operation forward and backward), the compensation hot-blast stove is operated at full capacity, and produces 400 ℃ of high-temperature flue gas access original systems of 140,000 NM3/h; Another kind is gaspipe network while there is no enough coal gas (or Power Generation by BF Gas come into operation after), and the auxiliary heat wind furnace guarantees that underrun gets final product;
2, the sintering circular-cooler flue-gas temperature, when flow is on the low side, when institute's producing steam can not meet the steam turbine power generation needs, the compensation hot-blast stove is operated at full capacity, theoretical 600 ℃ of high-temperature flue gas access original systems that produce 140,000 NM3/h;
When 3, the sintering circular-cooler short time stops production, require auxiliary combustion gas furnace to supply separately waste heat boiler, circulating fan system and central cooler interface are closed into and out of pipeline valve, self-organizing system, produce 400 ℃ of high-temperature flue gas access original systems of 140,000 NM3/h, guarantee steam turbine generating requirement.
The utility model adopts at the original system periphery increases an auxiliary hot-blast stove, generally produce 140,000 Nm3/h, (the hot-blast stove outlet arranges and mixes the cold wind mouth the middle temperature flue gas of 380-400 ℃, just control better hot-blast stove outlet temperature and pressure), send into the high-temperature pipe of former bootstrap system by hot air duct, supplement a part of high-temperature flue gas to current waste heat boiler, guarantee that institute's producing steam amount can guarantee steam turbine stable operation.This coal gas hot-blast stove can provide and meet the heat that waste heat boiler produces 400 ℃ of steam of 12 tons of 2Mpa., for the ease of the Load Regulation of afterheat boiler system, the PLC system of hot-blast stove is arranged in the Central Control Room of waste heat boiler, low-voltage cabinet is arranged in the low-pressure chamber of waste heat boiler simultaneously.
During use, system coal gas is from 300m
2draw the corresponding valve of duct arrangement and partition measure on the sintering machine gas main; Combustion air needs the system configuration combustion fan, directly from periphery, draws air as combustion air; A heat minute stove is mixed the required cold wind of stove and get (120 ℃ of left and right of wind-warm syndrome from central cooler high temperature circulation blower fan, 3kpa pressure), connect 1 arm and cause the auxiliary heat wind furnace, control valve is set on pipeline, can make to keep in situation that the circulating fan load is substantially constant, take full advantage of circulating flue gas, reach the energy-saving effect of system; The assisted with high-temperature flue gas cause after former high-temperature pipe valve touch logical.
Advantage of the present utility model is as follows:
1. pressing direct economic benefit calculates: produce the steam estimation of 12T, pressure 2MPa, temperature 350 by the compensation hot blast stove design, increase generated output greatly about 2000 ~ 2500kw left and right.Annual electricity generating capacity is 1,650 ten thousand kwh/ approximately.Cogeneration go into operation since because the reasons such as waste heat deficiency are opened, shut down frequent; stop at present machine total time at least at 3-4 hour at every turn; pressing 2000kw/h by average each stop minimizing generating dutation 2 hours (except the time effects of parking itself), generated energy calculates; generate electricity less 4000kwh. by shutting down less weekly 2 times at every turn, can increase per month approximately 3.2 ten thousand kwh of generated energy.Annual electricity generating capacity is 38.4 ten thousand kwh/ approximately.All amount to approximately 1,013 ten thousand yuan/year.
2. by indirect economic effect: the frequent starting state of cogeneration unit is unfavorable for safe operation and the maintaining of unit at present, affect unit service life, can avoid the frequent starting generating set after increasing the compensation hot-blast stove, can also slow down in addition daily unit load fluctuation, stablize unit operation, extend unit service life;
The accompanying drawing explanation
The structural representation that Fig. 1 is an embodiment of the utility model.
The specific embodiment
Embodiment
The structure of the present embodiment as shown in Figure 1, a kind of sintering machine residual heat using device, comprise waste heat boiler 1, two groups of central coolers 2 that are communicated with waste heat boiler and 3, by high-temperature flue gas pipeline 4 and middle temperature flue 5, with waste heat boiler 1, be communicated with respectively, the central cooler 2 of high-temperature flue gas pipeline 4 to waste heat boiler section is provided with high-temperature flue gas control valve 6, the central cooler 3 of middle temperature flue 5 to waste heat boiler section is provided with middle temperature smoke regulating valve 7, high, middle temperature flue end is respectively equipped with high-temperature flue gas pipeline diffusion valve 8 and middle temperature flue diffusion valve 9, also be provided with compensation hot-blast stove 10 between waste heat boiler 1 and central cooler 2 and 3, compensation hot-blast stove 10 is provided with an inlet end and two outlet sides, inlet end respectively with liquefaction tracheae 11, gas pipe 12 and combustion-aid air pipe 13 are communicated with, an outlet side is communicated with waste heat boiler 1 by corresponding with it outlet pipe, another outlet side is by corresponding with it outlet pipe and high-temperature flue gas pipeline communication.Wherein compensating the outlet pipe of hot-blast stove 10 and the access port of high-temperature flue gas pipeline 4 is located between high-temperature flue gas control valve 6 and waste heat boiler 1.Be equipped with valve on the outlet pipe of compensation hot-blast stove 10 and admission line.
During use, system coal gas is from 300m
2draw the corresponding valve of duct arrangement and partition measure on the sintering machine gas main; Combustion air needs the system configuration combustion fan, directly from periphery, draws air as combustion air; A heat minute stove is mixed the required cold wind of stove and get (120 ℃ of left and right of wind-warm syndrome from central cooler high temperature circulation blower fan, 3kpa pressure), connect an arm and cause the auxiliary heat wind furnace, control valve is set on pipeline, can make to keep in situation that the circulating fan load is substantially constant, take full advantage of circulating flue gas, reach the energy-saving effect of system; The assisted with high-temperature flue gas cause after former high-temperature pipe valve touch logical.
In addition to the implementation, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the claimed scope of the utility model.
Claims (3)
1. a sintering machine residual heat using device, comprise waste heat boiler, the central cooler be communicated with waste heat boiler, described central cooler is provided with two groups, by high-temperature flue gas pipeline and middle temperature flue, with waste heat boiler, be communicated with respectively, the central cooler of described high-temperature flue gas pipeline to waste heat boiler section is provided with the high-temperature flue gas control valve, the central cooler of described middle temperature flue to waste heat boiler section is provided with middle temperature smoke regulating valve, described height, middle temperature flue end is respectively equipped with height, middle temperature flue diffusion valve, it is characterized in that: also be provided with the compensation hot-blast stove between described waste heat boiler and central cooler, described compensation hot-blast stove is provided with an inlet end and two outlet sides, described inlet end respectively with liquefaction tracheae, gas pipe and combustion-aid air pipe are communicated with, a described outlet side is communicated with waste heat boiler by corresponding with it outlet pipe, another outlet side is by corresponding with it outlet pipe and described high-temperature flue gas pipeline communication.
2. sintering machine residual heat using device according to claim 1, it is characterized in that: the access port of the outlet pipe of described compensation hot-blast stove and described high-temperature flue gas pipeline is located between described high-temperature flue gas control valve and described waste heat boiler.
3. sintering machine residual heat using device according to claim 1, is characterized in that: on the outlet pipe of described compensation hot-blast stove and admission line, be equipped with valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220660725XU CN203011163U (en) | 2012-12-05 | 2012-12-05 | Waste heat utilization device of sintering machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220660725XU CN203011163U (en) | 2012-12-05 | 2012-12-05 | Waste heat utilization device of sintering machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203011163U true CN203011163U (en) | 2013-06-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220660725XU Expired - Lifetime CN203011163U (en) | 2012-12-05 | 2012-12-05 | Waste heat utilization device of sintering machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203011163U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980413A (en) * | 2012-12-05 | 2013-03-20 | 江苏永钢集团有限公司 | Afterheat utilization device of sintering machine |
| CN103615909A (en) * | 2013-12-11 | 2014-03-05 | 北京志能祥赢节能环保科技有限公司 | Hot air circulation sintering and sintering double-pressure waste heat utilizing system and method |
-
2012
- 2012-12-05 CN CN201220660725XU patent/CN203011163U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102980413A (en) * | 2012-12-05 | 2013-03-20 | 江苏永钢集团有限公司 | Afterheat utilization device of sintering machine |
| CN103615909A (en) * | 2013-12-11 | 2014-03-05 | 北京志能祥赢节能环保科技有限公司 | Hot air circulation sintering and sintering double-pressure waste heat utilizing system and method |
| CN103615909B (en) * | 2013-12-11 | 2015-04-08 | 北京志能祥赢节能环保科技有限公司 | Hot air circulation sintering and sintering double-pressure waste heat utilizing system and method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JOYI ENVIRONMENTAL PROTECTION AND TECHNOLOGY CO., Free format text: FORMER OWNER: JIANGSU YONGGANG GROUP CO., LTD. Effective date: 20130701 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130701 Address after: Zhangjiagang Economic Development Zone, Suzhou City, Jiangsu province 215628 city (yangshe Road 1 people) Patentee after: JOYI ENVIRONMENTAL PROTECTION AND TECHNOLOGY Co.,Ltd. Address before: Nanfeng town Zhangjiagang city Suzhou city Jiangsu province 215628 wing Jiangsu Yonggang group Patentee before: JIANGSU YONGGANG GROUP Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130619 |