CN104232846A - System and method for supplying steam to RH refining furnace - Google Patents
System and method for supplying steam to RH refining furnace Download PDFInfo
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Abstract
The invention discloses a system for supplying steam to an RH refining furnace. The system comprises a self-produced steam supply pipeline and an external grid steam supply pipeline, wherein the self-produced steam supply pipeline comprises a plurality of converter steam drums, a heat accumulator group, a regulating valve group, a moisture removal drum and a temperature sensor. The specific technical scheme of a method for supplying the steam to the RH refining furnace is as follows: 1, in the absence of converters or under the condition that only one converter is used for production, regulating valves perform automatic regulation and quick switching, so that the pressure of the steam can quickly meet the production requirement; 2, under the condition that two or three converters are used for cross production, tests prove that the pressure of the steam supplied by an internal grid to the RH furnace can completely meet the production requirement; 3, a regulation and control scheme is adopted. According to the system and the method, the converter steam can be reliably and directly supplied to the RH furnace, so that the pressure of the steam supplied to the RH furnace is stable and reliable; the problem that the steam carries moisture is solved, and the high-quality converter steam is used by the RH furnace; the system is widely applicable to small and medium-sized converters, and the equipment investment cost is low.
Description
Technical field
The present invention relates to metallurgical field of steel-making, particularly a kind of using the afterheat steam of converter by-product directly as the steam power source of RH refining furnace vacuum pump system to the system and method for RH stove steam supply.
Background technology
RH refining furnace is a kind of steel secondary refining tooling for the production of high-quality steel.One of its core system is vacuum pump group system, usually adopts water-ring pump and vapor jet pump.
Vacuum system is to the requirement of steam: (1) vapor pressure will be stablized and can not lower than vacuum pump operating pressure; (2) water content of steam is low and water content can not have larger fluctuation.The steam that usual RH stove uses is the superheated vapour of thermal power plant.
Afterheat steam that middle primary converter produces all has discontinuous, low pressure and the feature such as pressure step, water content be large.But RH stove need of production high-quality steam, cost requirement is high; If converter produced steam-energy meets RH stove working condition, and can use by direct-furnish RH stove on the spot, so just can realize secondary energy and directly use, improve converter produced integrated steam rate.
Domestic use Converter Steam direct-furnish RH stove mainly contains following 2 kinds of modes at present:
(1) patent No. is 201120000333.6, to be the mode adopted in the Chinese utility model patent of " RH refining furnace steam steam supplying device " be patent name: the mesohigh steam direct-furnish RH stove self-produced by mammoth conveter, vapor pressure is higher.Plenum system adopts the method for secondary step-down after mainly being collected by Converter Steam, be down to by vapor pressure after pressure needed for RH stove for it.It is high that the shortcoming of this method is that vapour line bears pressure, and general requirement reaches about 4.0Mpa, and vapour line cost of investment is large; In secondary steam decompression process, energy loss is larger; Mammoth conveter can only be applicable at present.Major part steel mill of current China is mini-medium BOF plants (less than 150 tons), and institute's producing steam is low-pressure steam, cannot use aforesaid method.
(2) the low-pressure steam direct-furnish RH stove adopting the method for 6 thermophore in parallel to be produced by middle primary converter in " metallurgical power " third phase in 2011 " applied research of 120t converter waste heat steam in vacuum refining furnace ".The shortcoming of this method needs the thermophore of more than 6 in parallel to ensure the balance of vapor pressure, not only cost of investment is large, and capabilities limits of being steamed, and can not guarantee that RH stove is produced, and supply the vapor zone water yield very large, the fouling of RH stove vacuum pump system can be caused serious.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of system and method to RH refining furnace steam supply, the reliable supply of primary converter (less than 150 tons) self-produced steam in guarantee, adopt based on self-produced steam, outer is auxiliary for steam, self-produced steam can be used to greatest extent, can guarantee when steam inside deficiency that again RH stove is produced stable; Solve the water amount problem of converter produced steam, guarantee that RH stove can use the Converter Steam of high-quality; Make former carburetion system pressure relatively stable, reduce the thermal stresses produced due to the fluctuation of pressure and temperature, improve the work-ing life of original system.
For realizing above-mentioned technical purpose, a kind of system to RH refining furnace steam supply proposed by the invention, it comprises self-produced steam supply air line and outer net steam supply air line, self-produced steam supply air line comprises some converter drums, thermophore group, variable valve group, dewater drum and temperature sensor, supply air line is accessed after parallel connection between converter drum, described thermophore group comprises three thermophore and some vacuum breaker, supply air line is accessed after parallel connection between three thermophore, every platform thermophore is imported and exported and is provided with vacuum breaker, to prevent the steam entering thermophore and the steam refluence of being discharged by thermophore, variable valve group comprises the first variable valve group and the second variable valve group, thermophore group output terminal is by connecting the drum that dewaters after the first variable valve group, dewater drum output terminal by connecting RH refining furnace vacuum flush system after the second variable valve group, described outer net steam supply air line comprises the 3rd variable valve group, and the 3rd variable valve group input terminus connects outer net steam, output terminal is connected with the drum that dewaters, first variable valve group and the 3rd regulates valve block structure identical, wherein, first variable valve group comprises pressure regulator valve, vacuum breaker, three hand valves and two pressure units, wherein two hand valves are separately positioned on the input and output side of pressure regulator valve, pressure regulator valve and this two hand valves are connected afterwards and another hand valve is connected in parallel, two pressure units are separately positioned on the input and output side of hand valve, and vacuum breaker is arranged on the output terminal of whole first variable valve group, described second regulates valve block structure and first, the 3rd variable valve group substantially identical, and the second variable valve group, except comprising all parts of the first variable valve group, also comprises temperature sensor, and described temperature sensor is arranged at the vacuum breaker input terminus of the second variable valve group.Converter produced low-pressure steam and outer net steam fully mix, dewater dewatering in drum, can solve the water amount problem of converter produced steam, guarantee that RH stove can use the Converter Steam of high-quality.The pressure regulator valve energy timely adjustment outer net steam of the 3rd variable valve group, guarantees to supplement when Intranet steam deficiency the steam that dewaters in drum, enable system supply steam stable supplying RH stove vacuum flush system.When there is no converter or 1 block converter produces, namely during a converter drum job, Intranet vapor pressure is extremely low, production requirement can not be met, need outer net vapor portion or all drop into, now by Logic judgment, variable valve regulates automatically, quick switching, can ensure that vapor pressure meets need of production rapidly.When 2 or 3 block converter producing alternately, Intranet send the pressure of RH steam to show can meet production requirement completely by test, if Intranet send RH there is pressure surge in steam, then outer net steam supplements rapidly, result display now can ensure normal production, Intranet carburetion system is stable, RH stove vacuum pump system normal operation.
For utilizing converter produced steam more fully, described a kind of system to RH refining furnace steam supply also comprises low-pressure steam delivery conduit, low-pressure steam delivery conduit comprises the 4th variable valve group, 4th variable valve group regulates valve block structure identical with the first variable valve group and the 3rd, 4th variable valve group input terminus is connected with thermophore group output terminal or converter drum output terminal, 4th variable valve group output terminal connects low pressure steam line, so that the converter produced low-pressure steam of affluence is delivered to on-site low-pressure steam pipe network, also ensured the whole system pressure-stabilisation to RH refining furnace steam supply simultaneously.
A kind of method to RH refining furnace steam supply proposed by the invention, its concrete technical scheme is:
1, when not having converter or 1 block converter produces, Intranet vapor pressure is extremely low, can not meet production requirement, need outer net vapor portion or all drop into, now by Logic judgment, variable valve regulates automatically, quick switching, can ensure that vapor pressure meets need of production rapidly;
2, when 2 or 3 block converter producing alternately, Intranet send the pressure of RH steam to show can meet production requirement completely by test, if Intranet send RH there is pressure surge in steam, then outer net steam supplements rapidly, and result display now can ensure normal production;
3, regulable control scheme
Converter Steam regulable control scheme is mainly to the comprehensive adjustment of the first variable valve group, the second variable valve group, the 3rd variable valve group and the 4th variable valve group, the pressure of cooperation group and the drum that dewaters regulates, and finally reaches and all can meet production requirement under different working conditions:
The automatic regulation scheme of (1) the 4th variable valve group flow: the pressure regulator valve PID of the 4th variable valve group is set in auto state, 1. be greater than downstream pressure and pressure is not less than " when RH suspends, upstream pressure low stopping is sent outside " set(ting)value at the upstream pressure of pressure regulator valve, after valve automatic regulating valve, pressure is to the SP set-point of PID; 2. downstream pressure or pressure is less than lower than " during RH gas, the low stopping of upstream pressure is sent outside " set(ting)value at the upstream pressure of pressure regulator valve, or pressure is lower than " when RH suspends, the low stopping of upstream pressure is sent outside " set(ting)value, CV and AQ of PID is all forced to 0, and valve is closed automatically; 3. when RH suspends, upstream pressure stops sending outside lower than set(ting)value; During RH gas, upstream pressure stops sending outside lower than set(ting)value;
The automatic regulation scheme of (2) first variable valve group pressure: the pressure regulator valve of the first variable valve group is set in auto state: 1. during RH refining furnace gas, upstream pressure is not less than downstream pressure, and after valve automatic regulating valve, pressure is to set(ting)value; During RH refining furnace gas, upstream pressure is lower than downstream pressure, and after keeping setting-up time, pressure regulator valve cuts out automatically; 2. when RH refining furnace suspends, downstream pressure is not less than upstream pressure, and after keeping setting-up time, pressure regulator valve cuts out automatically;
The automatic regulation scheme of pressure of (3) second variable valve groups: the pressure regulator valve of the second variable valve group will be set in auto state, 1. downstream pressure setting when RH refining furnace suspends: when RH refining furnace suspends production, downstream pressure is adjusted to this set(ting)value by pressure regulator valve automatically; 2. downstream pressure setting during RH refining furnace gas: when RH refining furnace is produced, downstream pressure will be adjusted to this set(ting)value by pressure regulator valve automatically;
The automatic regulation scheme of pressure of (4) the 3rd variable valve groups: the pressure regulator valve of the 3rd variable valve group will be set in auto state, pressure regulator valve pressure regulates and automatically drops into is input of having ready conditions, when pressure regulator valve meets the following conditions, and after will setting-up time being kept, pressure regulator valve puts into operation automatically, valve opening is exitted, and the downstream pressure of pressure regulator valve is adjusted to set(ting)value; 1. when RH refining furnace gas: the pressure regulator valve downstream pressure of the second variable valve group is lower than set(ting)value and control valve opening is greater than 95%; Then the pressure regulator valve of the 3rd variable valve group drops into automatically; 2., when above-mentioned condition does not meet, pressure regulator valve cuts out automatically;
The pressure regulator valve of (5) the 3rd variable valve groups is forced to drop into regulation scheme: pressure regulator valve is set in auto state, and click and force button, pressure regulator valve puts into operation automatically, and valve opening is exitted, and the downstream pressure of pressure regulator valve is adjusted to setting pressure;
(6) thermophore regulation of level scheme: three is parallel running mode, and water level arranges higher; Dewater drum and the series operation of thermophore group; Three thermophore and newly-increased drum form series-parallel connection operational mode, by converter produced steam direct-furnish RH stove.
A kind of system and method to RH refining furnace steam supply proposed by the invention, guarantees that Converter Steam reliably can directly supply RH stove; Based on self-produced Converter Steam, outer is auxiliary for steam, uses self-produced steam to greatest extent; Guarantee stable interior ductwork pressure, make the vapor pressure being sent to RH stove reliable and stable; Solve the problem of the vapor zone water yield, guarantee that RH stove uses the Converter Steam of high-quality; Can be widely used in mini-medium BOF plants, equipment investment cost is low.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of system and method to RH refining furnace steam supply of the present invention.
Fig. 2 is the second variable valve group structural representation.
Embodiment
See accompanying drawing, in figure, the direction of arrow is steam flow, a kind of system to RH refining furnace steam supply, it comprises self-produced steam supply air line and outer net steam supply air line, self-produced steam supply air line comprises some converter drums 1, thermophore group 2, variable valve group, dewater drum 4 and temperature sensor 8, supply air line is accessed after parallel connection between converter drum, described thermophore group comprises three thermophore and some vacuum breaker 12, supply air line is accessed after parallel connection between three thermophore, every platform thermophore is imported and exported and is provided with vacuum breaker, to prevent the steam entering thermophore and the steam refluence of being discharged by thermophore, variable valve group comprises the first variable valve group 3 and the second variable valve group 5, thermophore group output terminal is by connecting the drum that dewaters after the first variable valve group, dewater drum output terminal by connecting RH refining furnace vacuum flush system after the second variable valve group, described outer net steam supply air line comprises the 3rd variable valve group the 6, three variable valve group input terminus connection outer net steam, output terminal is connected with the drum that dewaters, first variable valve group and the 3rd regulates valve block structure identical, wherein, first variable valve group comprises pressure regulator valve 9, vacuum breaker 12, three hand valves 10 and two pressure units 11, wherein two hand valves are separately positioned on the input and output side of pressure regulator valve, pressure regulator valve and this two hand valves are connected afterwards and another hand valve is connected in parallel, two pressure units are separately positioned on the input and output side of hand valve, and vacuum breaker is arranged on the output terminal of whole first variable valve group, second variable valve group and first regulates valve block structure substantially identical, and the second variable valve group, except comprising all parts of the first variable valve group, also comprises temperature sensor, and described temperature sensor is arranged at the vacuum breaker input terminus of the second variable valve group.Converter produced low-pressure steam and outer net steam fully mix, dewater dewatering in drum, can solve the water amount problem of converter produced steam, guarantee that RH stove can use the Converter Steam of high-quality.The pressure regulator valve energy timely adjustment outer net steam of the 3rd variable valve group, guarantees to supplement when Intranet steam deficiency the steam that dewaters in drum, enable system supply steam stable supplying RH stove vacuum flush system.When there is no converter or 1 block converter produces, namely during a converter drum job, Intranet vapor pressure is extremely low, production requirement can not be met, need outer net vapor portion or all drop into, now by Logic judgment, variable valve regulates automatically, quick switching, can ensure that vapor pressure meets need of production rapidly.When 2 or 3 block converter producing alternately, Intranet send the pressure of RH steam to show can meet production requirement completely by test, if Intranet send RH there is pressure surge in steam, then outer net steam supplements rapidly, result display now can ensure normal production, Intranet carburetion system is stable, RH stove vacuum pump system normal operation.
For utilizing converter produced steam more fully, described a kind of system to RH refining furnace steam supply also comprises low-pressure steam delivery conduit, low-pressure steam delivery conduit comprises the 4th variable valve group 7, 4th variable valve group and the first variable valve group, second variable valve group and the 3rd regulates valve block structure identical, 4th variable valve group input terminus is connected with thermophore group output terminal or converter drum output terminal, 4th variable valve group output terminal connects low pressure steam line, so that the converter produced low-pressure steam of affluence is delivered to on-site low-pressure steam pipe network, also ensured the whole system pressure-stabilisation to RH refining furnace steam supply simultaneously.
A kind of method to RH refining furnace steam supply proposed by the invention, its concrete technical scheme is:
1, when not having converter or 1 block converter produces, Intranet vapor pressure is extremely low, can not meet production requirement, need outer net vapor portion or all drop into, now by Logic judgment, variable valve regulates automatically, quick switching, can ensure that vapor pressure meets need of production rapidly;
2, when 2 or 3 block converter producing alternately, Intranet send the pressure of RH steam to show can meet production requirement completely by test, if Intranet send RH there is pressure surge in steam, then outer net steam supplements rapidly, and result display now can ensure normal production;
3, regulable control scheme
Converter Steam regulable control scheme is mainly to the comprehensive adjustment of the first variable valve group, the second variable valve group, the 3rd variable valve group and the 4th variable valve group, the pressure of cooperation group and the drum that dewaters regulates, and finally reaches and all can meet production requirement under different working conditions:
The automatic regulation scheme of (1) the 4th variable valve group flow: the pressure regulator valve PID of the 4th variable valve group is set in auto state, 1. be greater than downstream pressure and pressure is not less than " when RH suspends, upstream pressure low stopping is sent outside " set(ting)value at the upstream pressure of pressure regulator valve, after valve automatic regulating valve, pressure is to the SP set-point of PID; 2. downstream pressure or pressure is less than lower than " during RH gas, the low stopping of upstream pressure is sent outside " set(ting)value at the upstream pressure of pressure regulator valve, or pressure is lower than " when RH suspends, the low stopping of upstream pressure is sent outside " set(ting)value, CV and AQ of PID is all forced to 0, and valve is closed automatically; 3. when RH suspends, upstream pressure stops sending outside lower than set(ting)value; During RH gas, upstream pressure stops sending outside lower than set(ting)value;
The automatic regulation scheme of (2) first variable valve group pressure: the pressure regulator valve of the first variable valve group is set in auto state: 1. during RH refining furnace gas, upstream pressure is not less than downstream pressure, and after valve automatic regulating valve, pressure is to set(ting)value; During RH refining furnace gas, upstream pressure is lower than downstream pressure, and after keeping setting-up time, pressure regulator valve cuts out automatically; 2. when RH refining furnace suspends, downstream pressure is not less than upstream pressure, and after keeping setting-up time, pressure regulator valve cuts out automatically;
The automatic regulation scheme of pressure of (3) second variable valve groups: the pressure regulator valve of the second variable valve group will be set in auto state, 1. downstream pressure setting when RH refining furnace suspends: when RH refining furnace suspends production, downstream pressure is adjusted to this set(ting)value by pressure regulator valve automatically; 2. downstream pressure setting during RH refining furnace gas: when RH refining furnace is produced, downstream pressure will be adjusted to this set(ting)value by pressure regulator valve automatically;
The automatic regulation scheme of pressure of (4) the 3rd variable valve groups: the pressure regulator valve of the 3rd variable valve group will be set in auto state, pressure regulator valve pressure regulates and automatically drops into is input of having ready conditions, when pressure regulator valve meets the following conditions, and after will setting-up time being kept, pressure regulator valve puts into operation automatically, valve opening is exitted, and the downstream pressure of pressure regulator valve is adjusted to set(ting)value; 1. when RH refining furnace gas: the pressure regulator valve downstream pressure of the second variable valve group is lower than set(ting)value and control valve opening is greater than 95%; Then the pressure regulator valve of the 3rd variable valve group drops into automatically; 2., when above-mentioned condition does not meet, pressure regulator valve cuts out automatically;
The pressure regulator valve of (5) the 3rd variable valve groups is forced to drop into regulation scheme: pressure regulator valve is set in auto state, and click and force button, pressure regulator valve puts into operation automatically, and valve opening is exitted, and the downstream pressure of pressure regulator valve is adjusted to setting pressure;
(6) thermophore regulation of level scheme: three is parallel running mode, and water level arranges higher; Dewater drum and the series operation of thermophore group; Three thermophore and newly-increased drum form series-parallel connection operational mode, by converter produced steam direct-furnish RH stove.
A kind of system and method to RH refining furnace steam supply proposed by the invention, guarantees that Converter Steam reliably can directly supply RH stove; Based on self-produced Converter Steam, outer is auxiliary for steam, uses self-produced steam to greatest extent; Guarantee stable interior ductwork pressure, make the vapor pressure being sent to RH stove reliable and stable; Solve the problem of the vapor zone water yield, guarantee that RH stove uses the Converter Steam of high-quality; Can be widely used in mini-medium BOF plants, equipment investment cost is low.
Claims (3)
1. the system to RH refining furnace steam supply, it is characterized in that it comprises self-produced steam supply air line and outer net steam supply air line, self-produced steam supply air line comprises some converter drums, thermophore group, variable valve group, dewater drum and temperature sensor, supply air line is accessed after parallel connection between converter drum, described thermophore group comprises three thermophore and some vacuum breaker, supply air line is accessed after parallel connection between three thermophore, every platform thermophore is imported and exported and is provided with vacuum breaker, to prevent the steam entering thermophore and the steam refluence of being discharged by thermophore, variable valve group comprises the first variable valve group and the second variable valve group, thermophore group output terminal is by connecting the drum that dewaters after the first variable valve group, dewater drum output terminal by connecting RH refining furnace vacuum flush system after the second variable valve group, described outer net steam supply air line comprises the 3rd variable valve group, and the 3rd variable valve group input terminus connects outer net steam, output terminal is connected with the drum that dewaters, first variable valve group and the 3rd regulates valve block structure identical, wherein, first variable valve group comprises pressure regulator valve, vacuum breaker, three hand valves and two pressure units, wherein two hand valves are separately positioned on the input and output side of pressure regulator valve, pressure regulator valve and this two hand valves are connected afterwards and another hand valve is connected in parallel, two pressure units are separately positioned on the input and output side of hand valve, and vacuum breaker is arranged on the output terminal of whole first variable valve group, described second regulates valve block structure and first, the 3rd variable valve group substantially identical, and the second variable valve group, except comprising all parts of the first variable valve group, also comprises temperature sensor, and described temperature sensor is arranged at the vacuum breaker input terminus of the second variable valve group.
2. a kind of system to RH refining furnace steam supply according to claim 1, it is characterized in that it also comprises low-pressure steam delivery conduit, low-pressure steam delivery conduit comprises the 4th variable valve group, 4th variable valve group regulates valve block structure identical with the first variable valve group and the 3rd, 4th variable valve group input terminus is connected with thermophore group output terminal or converter drum output terminal, and the 4th variable valve group output terminal connects low pressure steam line.
3., to a method for RH refining furnace steam supply, its concrete technical scheme is:
One, when not having converter or 1 block converter produces, Intranet vapor pressure is extremely low, can not meet production requirement, need outer net vapor portion or all drop into, now by Logic judgment, variable valve regulates automatically, quick switching, can ensure that vapor pressure meets need of production rapidly;
Two, when 2 or 3 block converter producing alternately, Intranet send the pressure of RH steam to show can meet production requirement completely by test, if Intranet send RH there is pressure surge in steam, then outer net steam supplements rapidly, and result display now can ensure normal production;
Three, regulable control scheme
Converter Steam regulable control scheme is mainly to the comprehensive adjustment of the first variable valve group, the second variable valve group, the 3rd variable valve group and the 4th variable valve group, the pressure of cooperation group and the drum that dewaters regulates, and finally reaches and all can meet production requirement under different working conditions:
The automatic regulation scheme of (1) the 4th variable valve group flow: the pressure regulator valve PID of the 4th variable valve group is set in auto state, 1. be greater than downstream pressure and pressure is not less than " when RH suspends, upstream pressure low stopping is sent outside " set(ting)value at the upstream pressure of pressure regulator valve, after valve automatic regulating valve, pressure is to the SP set-point of PID; 2. downstream pressure or pressure is less than lower than " during RH gas, the low stopping of upstream pressure is sent outside " set(ting)value at the upstream pressure of pressure regulator valve, or pressure is lower than " when RH suspends, the low stopping of upstream pressure is sent outside " set(ting)value, CV and AQ of PID is all forced to 0, and valve is closed automatically; 3. when RH suspends, upstream pressure stops sending outside lower than set(ting)value; During RH gas, upstream pressure stops sending outside lower than set(ting)value;
The automatic regulation scheme of (2) first variable valve group pressure: the pressure regulator valve of the first variable valve group is set in auto state: 1. during RH refining furnace gas, upstream pressure is not less than downstream pressure, and after valve automatic regulating valve, pressure is to set(ting)value; During RH refining furnace gas, upstream pressure is lower than downstream pressure, and after keeping setting-up time, pressure regulator valve cuts out automatically; 2. when RH refining furnace suspends, downstream pressure is not less than upstream pressure, and after keeping setting-up time, pressure regulator valve cuts out automatically;
The automatic regulation scheme of pressure of (3) second variable valve groups: the pressure regulator valve of the second variable valve group will be set in auto state, 1. downstream pressure setting when RH refining furnace suspends: when RH refining furnace suspends production, downstream pressure is adjusted to this set(ting)value by pressure regulator valve automatically; 2. downstream pressure setting during RH refining furnace gas: when RH refining furnace is produced, downstream pressure will be adjusted to this set(ting)value by pressure regulator valve automatically;
The automatic regulation scheme of pressure of (4) the 3rd variable valve groups: the pressure regulator valve of the 3rd variable valve group will be set in auto state, pressure regulator valve pressure regulates and automatically drops into is input of having ready conditions, when pressure regulator valve meets the following conditions, and after will setting-up time being kept, pressure regulator valve puts into operation automatically, valve opening is exitted, and the downstream pressure of pressure regulator valve is adjusted to set(ting)value; 1. when RH refining furnace gas: the pressure regulator valve downstream pressure of the second variable valve group is lower than set(ting)value and control valve opening is greater than 95%; Then the pressure regulator valve of the 3rd variable valve group drops into automatically; 2., when above-mentioned condition does not meet, pressure regulator valve cuts out automatically;
The pressure regulator valve of (5) the 3rd variable valve groups is forced to drop into regulation scheme: pressure regulator valve is set in auto state, and click and force button, pressure regulator valve puts into operation automatically, and valve opening is exitted, and the downstream pressure of pressure regulator valve is adjusted to setting pressure;
(6) thermophore regulation of level scheme
Three is parallel running mode, and water level arranges higher; Dewater drum and the series operation of thermophore group; Three thermophore and newly-increased drum form series-parallel connection operational mode, by converter produced steam direct-furnish RH stove.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107338344A (en) * | 2017-06-28 | 2017-11-10 | 秦皇岛首秦金属材料有限公司 | A kind of method for meeting the production of RH stoves with converter waste heat steam completely |
| CN108224392A (en) * | 2017-12-11 | 2018-06-29 | 鞍钢股份有限公司 | Converter residual neat recovering system storage heater steam energy saving method |
| CN110260019A (en) * | 2019-04-03 | 2019-09-20 | 宁波钢铁有限公司 | The control method of outer net steam control valve is sent when a kind of steel-making RH production |
| CN111826511A (en) * | 2020-06-15 | 2020-10-27 | 华菱安赛乐米塔尔汽车板有限公司 | Method for improving platability of high-strength strip steel in hot dip plating production process |
| 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 (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11280700A (en) * | 1998-03-31 | 1999-10-15 | Kawasaki Steel Corp | Operation method for vacuum exhaust device |
| CN101464094A (en) * | 2009-01-16 | 2009-06-24 | 秦皇岛首秦金属材料有限公司 | Steam multi-source combined supply method for finery evacuation |
| 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 |
| CN204325413U (en) * | 2014-09-19 | 2015-05-13 | 马钢(集团)控股有限公司 | A kind of system to RH refining furnace steam supply |
-
2014
- 2014-09-19 CN CN201410478725.1A patent/CN104232846B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11280700A (en) * | 1998-03-31 | 1999-10-15 | Kawasaki Steel Corp | Operation method for vacuum exhaust device |
| CN101464094A (en) * | 2009-01-16 | 2009-06-24 | 秦皇岛首秦金属材料有限公司 | Steam multi-source combined supply method for finery evacuation |
| 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 |
| CN204325413U (en) * | 2014-09-19 | 2015-05-13 | 马钢(集团)控股有限公司 | A kind of system to RH refining furnace steam supply |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107338344A (en) * | 2017-06-28 | 2017-11-10 | 秦皇岛首秦金属材料有限公司 | A kind of method for meeting the production of RH stoves with converter waste heat steam completely |
| CN108224392A (en) * | 2017-12-11 | 2018-06-29 | 鞍钢股份有限公司 | Converter residual neat recovering system storage heater steam energy saving method |
| CN110260019A (en) * | 2019-04-03 | 2019-09-20 | 宁波钢铁有限公司 | The control method of outer net steam control valve is sent when a kind of steel-making RH production |
| CN111826511A (en) * | 2020-06-15 | 2020-10-27 | 华菱安赛乐米塔尔汽车板有限公司 | Method for improving platability of high-strength strip steel in hot dip plating production process |
| 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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