CN2045388U - Cas preheating device for blast furnace hot blast stove - Google Patents
Cas preheating device for blast furnace hot blast stove Download PDFInfo
- Publication number
- CN2045388U CN2045388U CN 89200297 CN89200297U CN2045388U CN 2045388 U CN2045388 U CN 2045388U CN 89200297 CN89200297 CN 89200297 CN 89200297 U CN89200297 U CN 89200297U CN 2045388 U CN2045388 U CN 2045388U
- Authority
- CN
- China
- Prior art keywords
- gas
- raw gas
- hot blast
- blast furnace
- steel pipe
- 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- Withdrawn
Links
Images
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model discloses a gas preheating device for a blast furnace and a hot blast furnace, comprising a raw gas inlet, a box body, a square double-layer corrugated expander, a purified gas inlet, a guide box body, an airflow guide pipe, a purified gas outlet, a main box body, a heating pipe and a venturi-shaped raw gas outlet which are welded together. The gas preheating device can be arranged on a gas pipeline arranged between the gravity dust collector and the tower of the blast furnace so as to preheat purified gas burned by the hot blast furnace; when the temperature of the raw gas inlet is 40-50 DEG C, the temperature of the purified gas is increased to 250-280 DEG C, so that the purposes of increasing hot air temperature, decreasing coke and increasing iron is achieved.
Description
The utility model is to belong to the heat-exchanger rig that utilizes blast furnace raw gas sensible heat to come preheating blast funnace hot blast stove purified gas.
Before the utility model is not made,, all have the precedent that adopts tubular type, board-like, heat pipe-type, rotary type and heating agent formula interchanger, and all obtained good effect as far back as thermal power generation and chemical system.Also adopted heat pipe, separate heat pipe and heating agent formula interchanger in addition on iron-smelting process, they are to utilize the flue residue heat of hotblast stove to come warm-up combustion-supporting air and coal gas.The hot-blast stove flue dustiness is at 3g/m
3Below, so interchanger does not have fouling phenomenon, yet utilize blast furnace raw gas preheating heat wind furnace purified gas situation just completely different.Be characterized in the temperature height, about about 400 ℃, dustiness is big, about 10g/m
3About.Utilize aforesaid device can't solve life problems and safeguard ordinary production.
The main purpose of the design's utility model provides a kind of high-level efficiency interchanger that utilizes blast furnace raw gas preheating purified gas.And have simple in structure, long service life, characteristics such as cost is low, and easy to manufacture and maintenance workload is low.Thereby the raising wind-warm syndrome with less energy-consumption, improves blase furnace cast iron output.
The utility model structure is such: be arranged with many seamless steel tube for boiler by certain distance in metal cabinet, steel pipe bundle can divide single group or many groups according to needs are installed, but two must be fixed every steel pipe respectively with two block plates, make restrain into as a whole.According to being heated gas speed or importing and exporting the needs of pipe connection position, available steel plate is separated into two or several sections in the middle of the tube bank.Circumferential weld between dividing plate and the every steel pipe must be dead with the electric welding weldering.The stationary tubesheet on tube bank top is not connected each other with upper body, and the two bellow expander that passes through separately simultaneously directly connects with the raw gas inlet tank.Thereby guaranteed free expansion separately.The gangway of purified gas can be installed in the homonymy or the both sides of casing as required.Homonymy, then casing must be separated into two sections, is provided with the air-flow side of guiding laddertron between two sections and connects.Both sides then must be separated into three sections in the casing, section with section between also be provided with the air-flow side of guiding laddertron and be connected.The retaining plate of tube bank bottom and lower part box and raw gas outlet weld together simultaneously, and directly are seated on the framework.How many tube bank of whole heat-exchanger rig what, sizes of length, size, thickness and whole heat-exchanger rig be by deciding of what and raw gas dustiness of raw gas and clean coal tolerance.
In order to hang down the wearing and tearing of the high high speed raw gas of dustiness to steel pipe, the raw gas ingress of every steel pipe all is provided with a removable toroidal sleeve pipe.
In order to guarantee this device bottom not dust stratification or the dust stratification less of trying one's best, under device, be welded with the ash stop plate of different inner diameters in the raw gas outlet liaison tube, the global shape of its arrangement such as venturi-shaped.Thereby increased gas flow rate, taken away dust, avoided line clogging.
This device is inflammable, the explosive and deleterious blast furnace gas of preheating, and this body structure is bigger, so the intensity and the severity requirement of device itself have been paid special attention in design.Consider the needs of body maintenance and inspection simultaneously and be provided with manhole, diffused requisite measures such as valve.
The heat exchange of this device is achieved in that pyritous blast furnace raw gas enters heat-exchanger rig by upper entrance, and by in the every steel pipe, the heat transferred steel pipe, flows out heat-exchanger rig to washing tower by lower part outlet again.Cryogenic purified gas is entered by lateral bottom inlet, from bottom to up one by one by each section of casing, simultaneously by the tube bank heating, after flowed out by the top outlet, delivers to blast furnace and hot blast cupola combustion.
Application of the present utility model has obtained tangible economic benefit.When raw gas temperature during at 300～400 ℃, the purified gas initial temperature is in the time of 40～50 ℃, and by behind this device, the raw gas temperature can be reduced to 210～220 ℃, the purified gas temperature can be preheating to 250～280 ℃, thereby has reduced the needed water loss 50% of temperature that the blast furnace raw gas enters washing tower; Improved and utilized purified gas incendiary Combustion of Hot Air Furnace temperature, hot blast temperature is reached more than 1150 ℃, make ton iron energy consumption reduce by 4%, output improves 3%, facts have proved advantage such as that this device has is simple in structure, manufacturing process is easy, cost is low, the coefficient of heat transfer is big, be difficult for dust stratification, long service life and remarkable in economical benefits.
Accompanying drawing is to have described an embodiment of the present utility model.
Accompanying drawing is the work synoptic diagram of embodiment.
This device upper box 1 welds together with double-deck square bellow expander 3, the skin of double-deck as seen from the figure square bellow expander is welded together with raw gas inlet casing 1 and purified gas guiding casing 5, and internal layer be with raw gas inlet casing 1 and fixedly steel pipe plate 14 weld together, removable toroidal steel bushing 2 is plugged on heat exchange steel pipe 4, it is that venturi-shaped distributes that the ash stop plate 7 of different inner diameters is arranged global shape, be welded in the outlet liaison tube 13, unloading valve 12 is arranged at the bottom, be fixed by bolts on the lower box 9 storage ash pipes, be provided with the coal gas side of guiding laddertron 8 in the purified gas guiding case 5, purified gas gangway pipe 11 and 10 all adopts welding process composition one with other parts.Blast funnace hot blast stove gas preheating device does not leak to qualified to suppress.
Claims (4)
1, a kind of blast funnace hot blast stove gas preheating device, it is characterized in that: by raw gas inlet casing 1, the double-deck bellow expander 3 of square is provided with the coal gas side of guiding laddertron 8 in the purified gas guiding case 5, main box 6, raw gas outlet casing 9, toroidal sleeve pipe 2 and heating steel pipe 4, steel pipe retaining plate 14, purified gas inlet tube 10, purified gas outlet 11, unloading valve 12, raw gas outlet liaison tube 13 is formed with ash stop plate 7 welding that are welded in Different Diameter in the pipe.
2, the skin that it is characterized in that the double-deck bellow expander 3 of square according to the described blast funnace hot blast stove gas preheating of claim 1 device and raw gas inlet casing 1 and the purified gas casing 5 that leads welds together; The internal layer of the double-deck bellow expander 3 of square and raw gas inlet casing 1 and steel pipe retaining plate 14 are welded together.
3, it is characterized in that according to the described blast funnace hot blast stove gas preheating of claim 1 device the raw gas ingress of every heat exchange steel pipe 4 all is provided with removable toroidal wear-resistant sleeve 2.
4, it is characterized in that according to the described blast funnace hot blast stove gas preheating of claim 1 device raw gas exports the ash stop plate 7 of the different inner diameters of burn-oning in the liaison tube 13, its overall alignment is shaped as venturi-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89200297 CN2045388U (en) | 1989-01-05 | 1989-01-05 | Cas preheating device for blast furnace hot blast stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89200297 CN2045388U (en) | 1989-01-05 | 1989-01-05 | Cas preheating device for blast furnace hot blast stove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2045388U true CN2045388U (en) | 1989-10-04 |
Family
ID=4858415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89200297 Withdrawn CN2045388U (en) | 1989-01-05 | 1989-01-05 | Cas preheating device for blast furnace hot blast stove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2045388U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053701C (en) * | 1997-01-24 | 2000-06-21 | 冶金工业部鞍山热能研究院 | Technology for double preheating by using blast-furnace hot-blast stove gas, and combustion-supporting air |
| CN103383144A (en) * | 2013-08-06 | 2013-11-06 | 叙永县马岭粮油食品有限公司 | Hot blast stove |
-
1989
- 1989-01-05 CN CN 89200297 patent/CN2045388U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053701C (en) * | 1997-01-24 | 2000-06-21 | 冶金工业部鞍山热能研究院 | Technology for double preheating by using blast-furnace hot-blast stove gas, and combustion-supporting air |
| CN103383144A (en) * | 2013-08-06 | 2013-11-06 | 叙永县马岭粮油食品有限公司 | Hot blast stove |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105570956B (en) | A kind of residual heat from boiler fume circulating heat supply system | |
| CN107860022A (en) | One kind becomes flue cross section tubular air preheater | |
| CN105042622A (en) | Air preheater based one air-water heat exchange | |
| CN101706109B (en) | Embedded deep cooler for boiler flue gas | |
| CN210625377U (en) | Tunnel cave waste heat recovery utilizes device | |
| CN205878964U (en) | Heat exchanger for waste heat recovery | |
| CN201513909U (en) | Boiler fume deep cooler | |
| CN110145947A (en) | A kind of high temperature and pressure compressed air heat exchanger structure | |
| CN206399178U (en) | Top formula hot air blast furnace | |
| CN201093900Y (en) | Compact type two return-stroke flue tube flue gas condensing energy conservation equipment | |
| CN100520268C (en) | Fume-fume hot pipe heater exchanger for fume desulphurization in heat-engine plant | |
| CN2045388U (en) | Cas preheating device for blast furnace hot blast stove | |
| CN106016238A (en) | Heat exchanger for waste heat recovery of coal-fired boiler | |
| CN201496991U (en) | Split-type steam air pre-heater | |
| CN203349676U (en) | Chimney recovering waste heat of boiler smoke | |
| CN202246548U (en) | Dry quenching preheater | |
| CN202188627U (en) | Safe and energy-saving angle pipe hot-water boiler | |
| CN205137516U (en) | Air heater based on air water heat transfer | |
| CN201740358U (en) | Drying tower system | |
| CN201662222U (en) | Gas-liquid double-phase organic heat carrier boiler | |
| CN201764862U (en) | High-temperature heat exchanger | |
| CN209689432U (en) | A kind of heat exchange of catalytic cracking unit desulfurization fume takes hot systems | |
| CN2291629Y (en) | Split coal-fired hot-blast furnace | |
| CN204987072U (en) | Improve heat transfer device of boiler air inlet temperature | |
| CN214308302U (en) | Horizontal parallel arrangement heat storage device based on heat pipes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |