CN2210194Y - Blast furnace gas preheating equipment - Google Patents
Blast furnace gas preheating equipment Download PDFInfo
- Publication number
- CN2210194Y CN2210194Y CN 93229158 CN93229158U CN2210194Y CN 2210194 Y CN2210194 Y CN 2210194Y CN 93229158 CN93229158 CN 93229158 CN 93229158 U CN93229158 U CN 93229158U CN 2210194 Y CN2210194 Y CN 2210194Y
- Authority
- CN
- China
- Prior art keywords
- blast furnace
- furnace gas
- gas preheating
- preheating device
- pipe bundle
- 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 - Fee Related
Links
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model relates to a blast furnace gas preheating device, which is mainly composed of a cylindrical tank body, a pipe bundle expander, an ash unloading valve, etc. The lower segment of a pipe bundle is fixed with the bank body by a baffle plate, and the upper segment of the pipe bundle expands freely; the expansion of the pipe bundle and the tank body can be absorbed respectively by a corrugated expander and an expander arranged on the tank body, so that the service life of the blast furnace gas preheating device is prolonged. An upper baffle plate is tamped with a layer of special refractory material for preventing high temperature and high dust raw gas flushing, and a raw gas outlet is tamped with venturi tube-like special refractory material for reducing and preventing ash depositing at the bottom of the blast furnace gas preheating device. The blast furnace gas preheating device has simple structure, easy manufacture, and long service life.
Description
The utility model relates to a kind of blast furnace gas primary heater unit, belongs to the gas heat exchanger technical field.
Before the utility model was made, China Patent No. 89200297.2 was released a kind of blast funnace hot blast stove furnace gas primary heater unit, and its preheating principle is identical with the utility model, promptly is with high temperature (～400 ℃), high dirt (～10g/m
2) raw gas feed in the tube bank in the heat-exchanger rig, and, obtained in practice using preferably by will the flow through purified gas preheating of heat-exchanger rig of the tube bank of being heated.But since this device have the body structure form unreasonable, to the unshielded measure etc. of the washing away problem of high-temperature high dust raw gas, cause its manufacture difficulty big, work-ing life is low.
The purpose of this utility model is exactly on the gas preheating device basic of patent 89200297.2, by the improvement of structure formation and the protection of air scour etc., provides a kind of manufacturing simple, good effect of heat exchange, the blast furnace gas primary heater unit of long service life.
Blast furnace gas primary heater unit of the present utility model as shown in drawings, accompanying drawing has provided the sectional view of blast furnace gas primary heater unit.
Blast furnace gas preheating equipment of the present utility model is mainly by bellow expander (1), converting pipe (2), sleeve pipe (3), special refractories (4), upper spacer (5), purified gas outlet (6), intermediate guide plate (7), steel pipe (8), garden shape casing (9), lower conical tube (10), Venturi tube special refractories (11), unloading valve (12), expander (13), purified gas entrance (14), raw coke oven gas outlet (15) etc. and forming. It is by hexagon and have certain spacing distance to be arranged with many seamless steel tube for boiler (8) to form tube bank in metal garden shape casing (9), tube bank can be divided into single group or many groups according to needs are installed, but two ends must be respectively fixing every pipe with steel plate, make and restrain into as a wholely, the centre of tube bank can be according to being heated gas speed or inlet/outlet pipe The needs of road coupled position, available steel plate are separated into two sections or several sections.
In order to reduce the dustiness height, the high raw gas of flow velocity is to the wearing and tearing of steel pipe (8), and the raw gas inlet of every steel pipe all is provided with a removable processing sleeve pipe (3).
In order to make upper strata dividing plate (5) directly not be subjected to washing away of raw gas and cause leakage, on upper spacer (5), make the special refractories (4) of 100 mm thick firm by ramming, make dividing plate and tube bank become one.
In order to make casing can bear pressure, select garden shape casing (9), thereby make interchanger under the situation of breakage, can be changed into the passage of raw gas, and do not influence the production of blast furnace.
The upper cone section converting pipe (2) of blast furnace gas primary heater unit of the present utility model is welded together with expander (13), and expander (13) directly absorbs the swell increment of casing (9).Tube bank is that the expansion of steel pipe (8) is then absorbed by bellow expander (1).Because bellow expander (1) is fixed on the framework, so it is also bearing the blind plate power of pipeline.Casing (9) is absorbed by two expanders mutually with the differential expansion of steel pipe (8).Raw gas is exported (15) and make into the special refractories of venturi shape (11) firm by ramming, can prevent interchanger bottom collection ash.In case under the situation of interchanger bottom dust stratification, can pass through unloading valve (12) and get rid of.The raw gas inlet is a garden shape adapter bonnet, the guide plate of tube bank makes the coal gas flow direction become 180 °, inlet of purified gas (14) and outlet (6) are all welded together with casing (9), the lower clapboard of casing (9) and tube bank is welded together and be fixed on the support, the tube bank epimere is free section, the contraction of can at random expanding has guaranteed the property sealed to each other of raw gas and purified gas, and primary heater unit does not leak to qualified to suppress.
In blast furnace gas primary heater unit of the present utility model, the pyritous raw gas enters the inlet of round casing (9) by pipeline, at the steel pipe of flowing through respectively (8) and with its preheating, flows out casing at last.Meanwhile, the cold conditions purified gas enters outside the tube bank of casing (9) through inlet (14), by carrying out the purpose that heat exchange reaches the preheating purified gas with the steel pipe that is preheated (8), delivers to the use point after purified gas outlet (6) is flowed out again.
Blast furnace gas primary heater unit of the present utility model utilizes temperature at 300～400 ℃ raw gas initial temperature to be preheating to 250～280 ℃ at 40～50 ℃ purified gas in an embodiment, and the raw gas temperature has dropped to 210～220 ℃.Thereby reduced the temperature that the blast furnace raw gas enters washing tower, and reduced water loss about 50%, improved 70～100 ℃ of blast furnace air temperatures, made hotblast stove with 100% blast furnace gas, wind-warm syndrome reaches 1100～1150 ℃, makes ton iron energy consumption reduce by 4%, output raising 3%.
Claims (2)
1, a kind of blast furnace gas primary heater unit, it is by sexangle and there is certain spacing distance to be arranged with the tube bank that many seamless steel tube for boiler (8) are formed in metal circular casing (9).And the raw gas of every steel pipe inlet all is provided with a removable processing sleeve pipe (3), purified gas inlet (14) and outlet (6) place two sides of metal circular casing (9) respectively, and its bottom is to unload the special refractories (4) that gray line (12) is characterized in that making firm by ramming on the upper spacer (5) one deck 100 mm thick.
2, blast furnace gas primary heater unit according to claim 1, the hypomere that it is characterized in that steel pipe (8) is fixed on the garden shape casing (9), and epimere is together with upper spacer (5) and converting pipe (2) free expansion, and its swell increment absorbs by bellow expander (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93229158 CN2210194Y (en) | 1993-09-03 | 1993-09-03 | Blast furnace gas preheating equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93229158 CN2210194Y (en) | 1993-09-03 | 1993-09-03 | Blast furnace gas preheating equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2210194Y true CN2210194Y (en) | 1995-10-18 |
Family
ID=33806077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93229158 Expired - Fee Related CN2210194Y (en) | 1993-09-03 | 1993-09-03 | Blast furnace gas preheating equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2210194Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111735340A (en) * | 2020-07-03 | 2020-10-02 | 中冶焦耐(大连)工程技术有限公司 | Novel gas preheater |
-
1993
- 1993-09-03 CN CN 93229158 patent/CN2210194Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111735340A (en) * | 2020-07-03 | 2020-10-02 | 中冶焦耐(大连)工程技术有限公司 | Novel gas preheater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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 |