CN107338344A - A kind of method for meeting the production of RH stoves with converter waste heat steam completely - Google Patents
A kind of method for meeting the production of RH stoves with converter waste heat steam completely Download PDFInfo
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- CN107338344A CN107338344A CN201710509409.XA CN201710509409A CN107338344A CN 107338344 A CN107338344 A CN 107338344A CN 201710509409 A CN201710509409 A CN 201710509409A CN 107338344 A CN107338344 A CN 107338344A
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- Prior art keywords
- steam
- stoves
- waste heat
- converter
- storage
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/10—Handling in a vacuum
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C2100/00—Exhaust gas
- C21C2100/06—Energy from waste gas used in other processes
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
A kind of method for meeting the production of RH stoves with converter waste heat steam completely, belongs to Refining Technology field.Concretely comprise the following steps：3 storage heaters are connected in parallel, and are connected respectively with the waste heat drum of every block converter, control the storage vapour maximum pressure of storage heater；One steam superheater is set between storage heater and RH stoves, and controls steam superheater outlet steam temperature and pressure.Advantage is that production cost is low, the influence that middle pressure steam boiler failure, maintenance etc. can be avoided to produce RH stoves；Converter waste heat steam is fully used, and eliminates middle pressure steam, and steam supply link is reduced, and improves the stability of RH stoves production.
Description
Technical field
It is more particularly to a kind of to meet that RH stoves produce with converter waste heat steam completely the invention belongs to Refining Technology field
Method.
Background technology
RH system equipments are a kind of steel secondary refining technological equipments for being used to produce high-quality steel, and main operational principle is exactly
Molten steel is set constantly to be circulated in vacuum environment, the argon gas in molten steel, hydrogen, CO gas follow in molten steel under vacuum conditions
It is pumped during ring, is purified molten steel by circulating degasification.
In STEELMAKING PRODUCTION, vaccum-pumping equipment it is most commonly seen be steam jet pump, to ensure vacuumizing effect and pumping
Time, the requirement with vapour system and to steam quality of vavuum pump are very strict：1) steam flow during vacuumizing must be protected
Card.The average steam consumption 17t/h of vacuum refining system, maximum steam consumption 25t/h, steam fluctuation is big, but requires at any time
Vacuumize, the quantity of steam of system " storage ", which all have to be larger than, vacuumizes required quantity of steam, otherwise, will extend pumpdown time very
Interrupted to vacuumizing.2) steam pressure must be stablized during vacuumizing.Vacuum refining system require pressure stability 1.0~
1.2MPa (gauge pressure), when pressure is too small or pressure oscillation is larger, vacuum recurrent fluctuations can be made, it is impossible to meet production requirement.3)
It must be overheat dry saturated steam to vacuumize steam used.RH vacuum refining furnaces require 10~20 DEG C of steam superheat.If steam temperature
Low, high humidity is spent, then can cause vacuum system water attack and vibrations, steam flow mini system can not start, and can also damage equipment.
It is usually at present to utilize afterheat steam and steam boiler caused by converter carburetion system to the method for vavuum pump steam supply
The middle pressure steam (2.94-4.90MPa) of offer mix the degree of superheat for reaching certain again after pressure regulation for vavuum pump use, but
Be had using middle pressure steam invest it is more, take up an area that big, steam supply link is more, RH stoves do not produce and produced that gap steam releasing is more, transports
The shortcomings of row cost is high.
The content of the invention
It is an object of the invention to provide a kind of method for meeting the production of RH stoves with converter waste heat steam completely, solves RH
The problem of consumption of stove middle pressure steam is high, smelting cost is high.Realize without using middle pressure steam, expired completely using converter waste heat steam
The method of sufficient RH stove evacuations.
In order to solve the above technical problems, specific steps and parameter are as follows：
1st, 3 storage heaters are connected in parallel, and be connected respectively with the waste heat drum of every block converter, change original 1 block converter
Waste heat drum only connect the pattern of 1 storage heater, meanwhile, the storage vapour maximum pressure of every storage heater is lifted by 1.1-1.5MPa
To 1.3-2.0MPa.Any block converter is smelted after transformation all can improve converter waste heat steam simultaneously to 3 storage heater heat supplies
The rate of recovery and heat storage capacity.
The 2nd, one steam superheater is set between storage heater and RH stoves, saturated vapor caused by steel-making waste heat is added
Heat, forms overheat dry saturated steam, the control of steam superheater outlet steam temperature in 180-250 DEG C, Stress control in 1.0-2.0MPa,
Meet RH stove requirements.
After the molten steel that complete last stove of casting machine casting plan of converter smelting needs RH stoves to handle, then continuous production 1-6 stoves should
The next situation poured secondary or other casting machines molten steel, avoid the occurrence of steam deficiency in RH stove processing procedures of casting machine.Due to converter smelting
Refine after pouring time last stove molten steel, still there is 1-2 stoves molten steel to be handled in the processing of LF stoves, without RH stoves, during the production of RH stoves eliminates
After pressing steam, converter waste heat steam consumption increase, when RH stoves handle above molten steel, if converter does not continue to smelt, meeting
Appearance converter waste heat steam insufficient pressure, RH stoves can not take out the situation of deep vacuum, therefore, need reasonable arrangement converter and the life of casting machine
Produce rhythm, it is ensured that converter waste heat steam yield.
The advantage of the invention is that：
1st, the production of RH stoves does not consume middle pressure steam and uses converter waste heat steam completely, reduces production cost, and be avoided that
The influence that middle pressure steam boiler failure, maintenance etc. produce to RH stoves.
2nd, converter waste heat steam is fully used, and effectively reduces steam releasing, avoids causing energy waste.
3rd, middle pressure steam is eliminated, steam supply link is reduced, and improves the stability of RH stoves production.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the present invention.Wherein, waste heat drum 1, storage heater 2, steam superheater 3.
Embodiment
Embodiment 1
During time last stove molten steel is poured in the processing of RH stoves, 1#, 2# converter are smelted simultaneously another pours secondary molten steel totally 2 for certain steel mill
Stove steel.3 storage heaters 2 are connected in parallel, and are connected respectively with the waste heat drum 1 of 1#, 2# converter.When 1#, 2# converter smelting simultaneously
Steam is provided to 3 storage heaters 2, the storage vapour maximum pressure of every storage heater 2 is arranged to 1.65MPa.Storage heater 2 and RH stoves it
Between set a steam superheater 3, to steel-making waste heat caused by saturated vapor heat, formed overheat dry saturated steam, steam mistake
Vapor (steam) temperature is in 200 DEG C, pressure 1.1MPa after 215 DEG C of 3 outlet steam temperature of hot stove, the regulation of pressure 1.55MPa, RH stove, completely
Meet RH stove requirements.
Embodiment 2
During time last 1 stove molten steel is poured in the processing of RH stoves, 1#, 2#, 3# converter are smelted simultaneously another pours secondary molten steel for certain steel mill
Totally 3 stove steel.3 storage heaters 2 are connected in parallel, and the waste heat drum 1 with 1#, 2#, 3# converter is connected respectively.1#, 2#, 3# converter smelting
Steam is provided to 3 storage heaters 2 simultaneously during refining, the storage vapour maximum pressure of every storage heater 2 is arranged to 1.72MPa.In storage heater 2
One steam superheater 3 is set between RH stoves, saturated vapor caused by steel-making waste heat is heated, forms overheat dry blowing
Vapour, vapor (steam) temperature is in 199 DEG C, pressure after 212 DEG C of 3 outlet steam temperature of steam superheater, the regulation of pressure 1.62MPa, RH stove
1.0MPa, fully meet RH stove requirements.
Claims (2)
- A kind of 1. method for meeting the production of RH stoves with converter waste heat steam completely, it is characterised in that specific steps and parameter are as follows：1) 3 storage heaters (2) are connected in parallel, and be connected respectively with the waste heat drum (1) of every block converter, changed original 1 and turn The waste heat drum (1) of stove only connects the pattern of 1 storage heater (2), meanwhile, by the storage vapour maximum pressure of every storage heater (2) by 1.1-1.5MPa is promoted to 1.3-2.0MPa, after transformation any block converter smelt all can simultaneously to 3 storage heater (2) heat supplies, Improve the converter waste heat steam rate of recovery and heat storage capacity；2) steam superheater (3) is set between storage heater (2) and RH stoves, saturated vapor caused by steel-making waste heat is carried out Heating, overheat dry saturated steam is formed, steam superheater (3) outlet steam temperature is controlled at 180-250 DEG C, and Stress control is in 1.0- 2.0MPa, meet RH stove requirements.
- 2. according to the method for claim 1, it is characterised in that when complete last stove of casting machine casting plan of converter smelting needs RH After the molten steel of stove processing, then the continuous production 1-6 stoves casting machine is next pours time or the molten steel of other casting machines, avoids the occurrence of the processing of RH stoves During steam deficiency situation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710509409.XA CN107338344A (en) | 2017-06-28 | 2017-06-28 | A kind of method for meeting the production of RH stoves with converter waste heat steam completely |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710509409.XA CN107338344A (en) | 2017-06-28 | 2017-06-28 | A kind of method for meeting the production of RH stoves with converter waste heat steam completely |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107338344A true CN107338344A (en) | 2017-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710509409.XA Pending CN107338344A (en) | 2017-06-28 | 2017-06-28 | A kind of method for meeting the production of RH stoves with converter waste heat steam completely |
Country Status (1)
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| CN (1) | CN107338344A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108534128A (en) * | 2018-04-24 | 2018-09-14 | 邯郸钢铁集团有限责任公司 | A kind of parameter regulation means of two kinds of vapour systems of iron and steel enterprise supply and recycling |
| CN115466827A (en) * | 2022-08-29 | 2022-12-13 | 武汉钢铁有限公司 | Double-plant three-unit combined heat storage RH vacuum refining steam system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101381797A (en) * | 2008-10-28 | 2009-03-11 | 南京钢铁股份有限公司 | Steam supply apparatus for RH vacuum steel refining furnace |
| CN202022955U (en) * | 2011-01-04 | 2011-11-02 | 马鞍山钢铁股份有限公司 | Steam supply device for RH refining furnace |
| CN104232846A (en) * | 2014-09-19 | 2014-12-24 | 马钢(集团)控股有限公司 | System and method for supplying steam to RH refining furnace |
-
2017
- 2017-06-28 CN CN201710509409.XA patent/CN107338344A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101381797A (en) * | 2008-10-28 | 2009-03-11 | 南京钢铁股份有限公司 | Steam supply apparatus for RH vacuum steel refining furnace |
| CN202022955U (en) * | 2011-01-04 | 2011-11-02 | 马鞍山钢铁股份有限公司 | Steam supply device for RH refining furnace |
| CN104232846A (en) * | 2014-09-19 | 2014-12-24 | 马钢(集团)控股有限公司 | System and method for supplying steam to RH refining furnace |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108534128A (en) * | 2018-04-24 | 2018-09-14 | 邯郸钢铁集团有限责任公司 | A kind of parameter regulation means of two kinds of vapour systems of iron and steel enterprise supply and recycling |
| CN115466827A (en) * | 2022-08-29 | 2022-12-13 | 武汉钢铁有限公司 | Double-plant three-unit combined heat storage RH vacuum refining steam system |
| CN115466827B (en) * | 2022-08-29 | 2023-08-18 | 武汉钢铁有限公司 | Double-factory three-unit combined heat storage RH vacuum refining steam system |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190326 Address after: 063200 Iron and Steel Power Park, Caofeidian Industrial Zone, Tangshan City, Hebei Province Applicant after: Shougang Jingtang Steel & Iron United Co., Ltd. Address before: 066326 Duzhuang, Haigang District, Qinhuangdao City, Hebei Province Applicant before: Qinhuangdao Shouqin Metal Material Co., Ltd. |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171110 |