CN106948876A - A kind of sulfuric acid HRS saturated vapor energy cascade utilization devices and method - Google Patents
A kind of sulfuric acid HRS saturated vapor energy cascade utilization devices and method Download PDFInfo
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- CN106948876A CN106948876A CN201710090821.2A CN201710090821A CN106948876A CN 106948876 A CN106948876 A CN 106948876A CN 201710090821 A CN201710090821 A CN 201710090821A CN 106948876 A CN106948876 A CN 106948876A
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- steam
- back pressure
- pressure turbine
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/08—Adaptations for driving, or combinations with, pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G1/00—Steam superheating characterised by heating method
- F22G1/005—Steam superheating characterised by heating method the heat being supplied by steam
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D1/00—Steam central heating systems
- F24D1/04—Steam central heating systems operating with exhaust steam
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The invention discloses a kind of sulfuric acid HRS saturated vapors energy cascade utilization device, the 0.8MPa HRS saturated vapors main pipeline is connected with 0.49MPa low-pressure steam main pipes, the decompression valve is arranged on 0.8MPa HRS saturated vapor main pipelines, inlet and outlet is provided with the industrial back pressure turbine, the import of the industrial back pressure turbine is connected by steam inlet pipe line with the 0.8MPa HRS saturated vapor main pipelines positioned at decompression valve leading portion, the 3.82MPa superheated steams pipeline is connected by steam pipe line with steam inlet pipe line, the 0.49MPa low-pressure steams main pipe is connected by steam discharge pipeline with the outlet of industrial back pressure turbine, the method have the advantages that：The technology work of steam pressure-reducing loss is taken full advantage of, and eliminates the power consumption of high pressure water feeding pump for boiler motor；Realize the cascade utilization of steam energy.
Description
Technical field
The present invention relates to the cascade utilization device of steam energy and the technical field of method, more particularly to sulphur system
The cascade utilization device and the technical field of method of 0.8MPa saturated vapors energy produced by sour device HRS systems.
Background technology
Big-and-middle-sized sulphur-burning sulphuric acid plant is as phosphatic compound fertilizer enterprise or the corollary apparatus of related sulphuric acid production enterprises, to return
Low temperature exhaust heat during midwifery production, low temperature exhaust heat recovery system i.e. HRS is each equipped with dry absorption section（Or HWHS）.At present,
Sulphur-burning sulphuric acid plant often produces one ton of sulfuric acid, and HRS systems want about 0.45-0.5 tons of output 0.8MPa saturated vapors, the saturated vapor
20% or so for molten sulphur production and application, remaining 80% depressurized by regulating valve after be incorporated to 0.49MPa low-pressure steam pipe networks, for follow-up
Heat supply network user or chemical plant installations use.
Saturated vapor is depressurized equivalent to adiabatic process by regulating valve, although heat is constant before and after decompression, with pressure
Power is reduced, and steam quality is deteriorated, use value step-down, causes wasting for available energy.And sulphur-burning sulphuric acid plant waste heat pot
Stove high pressure water feeding pump for boiler drives for motor, needs to consume a large amount of electric energy per hour.
The content of the invention
The purpose of the present invention be exactly provided to solve above-mentioned deficiency one kind can be fully utilized steam pressure from
0.8MPa is depressurized to the available energy during 0.49MPa, and is avoided that the sulfuric acid HRS saturated vapors of steam condensation water loss can ladder
Level utilizes device and method.
The technical solution that in order to solve the above-mentioned technical problem present invention uses is as follows：
A kind of sulfuric acid HRS saturated vapors energy cascade utilization device, it includes industrial back pressure turbine, 0.8MPa HRS saturations and steamed
Vapour main pipeline, decompression valve, 0.49MPa low-pressure steams main pipe, high pressure water feeding pump for boiler and 3.82MPa superheated steam pipelines,
The 0.8MPa HRS saturated vapors main pipeline is connected with 0.49MPa low-pressure steam main pipes, and the decompression valve is arranged on
On 0.8MPa HRS saturated vapor main pipelines, inlet and outlet, the industrial back pressure are provided with the industrial back pressure turbine
The import of steam turbine is connected by steam inlet pipe line with the 0.8MPa HRS saturated vapor main pipelines positioned at decompression valve leading portion,
The 3.82MPa superheated steams pipeline is connected by steam pipe line with steam inlet pipe line, and the 0.49MPa low-pressure steams main pipe is led to
The outlet that steam discharge pipeline is crossed with industrial back pressure turbine is connected, and the industrial back pressure turbine is driven with high pressure water feeding pump for boiler
Connection.
The industrial back pressure turbine is single-stage impulse back pressure turbine.
The industrial back pressure turbine is connected with high pressure water feeding pump for boiler direct-connection transmission.
It is provided with the steam inlet pipe line on first check-valve and servo valve, the steam discharge pipeline and is provided with the second cut-off
The 3rd stop valve is provided with valve and second check-valve, the steam pipe line.
The steam inlet pipe line, steam discharge pipeline, be respectively provided with the casing of servo valve and industrial back pressure turbine it is thin
Water pipe and stop valve.
A kind of sulfuric acid HRS saturated vapors energy stepped utilization method, its Application way is as follows：By 0.8MPa HRS saturated vapors
0.8MPa saturated vapors in main pipeline are discharged into steam inlet pipe line, and the superheated steam in 3.82MPa superheated steam pipelines is passed through
Steam pipe line is discharged into steam inlet pipe line and 0.8MPa saturated vapors is heated, and the 0.8MPa saturated vapors after heating are discharged into work
Industry back pressure turbine acting decrease temperature and pressure, drives high pressure water feeding pump for boiler to run by industrial back pressure turbine, then will be from work
The Back-pressure steam of industry back pressure turbine outlet discharge is incorporated to 0.49MPa low-pressure steam main pipes by steam discharge pipeline.
The beneficial effect that the present invention can be reached using above-mentioned technical solution is：
1st, drive industrial back pressure turbine to drive high pressure water feeding pump for boiler using HRS0.8MPa saturated vapors, take full advantage of
The technology work of steam pressure-reducing loss, and eliminate the power consumption of high pressure water feeding pump for boiler motor.
2nd, the Back-pressure steam after industrial back pressure turbine acting enters 0.49MPa low-pressure steams main pipe continuation heat supply network users
Use, realize the cascade utilization of steam energy.
3rd, due to having accessed a small amount of 3.82MPa superheated steams on the steam inlet pipe line of industrial back pressure turbine saturated vapor,
The temperature of steam is improved, steam is changed into micro- superheat state from saturation, so that avoiding industrial back pressure turbine enters vapour and row
Vapour produces condensate.The present invention can be widely applied to acid production with sulphur manufacturing enterprise low temperature exhaust heat recovery system or other similar have
Elevated pressures saturated vapor, which needs to depressurize steam supply, uses vapour enterprise.
Brief description of the drawings
Fig. 1 is the structural representation of sulfuric acid HRS saturated vapor energy cascade utilization devices.
Embodiment
As shown in Figure 1, a kind of sulfuric acid HRS saturated vapors energy cascade utilization device, it include industrial back pressure turbine 1,
0.8MPa HRS saturated vapors main pipeline 2, decompression valve 14,0.49MPa low-pressure steams main pipe 3, the and of high pressure water feeding pump for boiler 4
3.82MPa superheated steams pipeline 5, the industrial back pressure turbine 1 is single-stage impulse back pressure turbine, and uses electronic speed regulation
Mode, governing system uses man-machine interface and module composition control device and electronic actuators, and controller turns the steam turbine of setting
Speed compared with actual speed calculating after output 4~20mA control signal electron actuators, realize rotating speed on the spot or DCS is long-range
Control.The 0.8MPa HRS saturated vapors main pipeline 2 is connected with 0.49MPa low-pressure steams main pipe 3, the decompression valve
14 are arranged on 0.8MPa HRS saturated vapors main pipeline 2.Import 6 and outlet 7 are provided with the industrial back pressure turbine 1,
The import 6 of the industrial back pressure turbine 1 passes through steam inlet pipe line 8 and the 0.8MPa HRS saturations positioned at the leading portion of decompression valve 14
Main steam header road 2 is connected, and the 3.82MPa superheated steams pipeline 5 is connected by steam pipe line 10 with steam inlet pipe line 8, institute
State 0.49MPa low-pressure steams main pipe 3 by steam discharge pipeline 9 with the outlet 7 of industrial back pressure turbine 1 to be connected, the industry back of the body
Pressure steam turbine 1 is connected with the direct-connection transmission of high pressure water feeding pump for boiler 4.First check-valve 16 and tune are provided with the steam inlet pipe line 8
It is provided with the second stop valve 18 and second check-valve 19, the steam pipe line 10 and sets on storm valve 17, the steam discharge pipeline 9
There is the 3rd stop valve 20.The steam inlet pipe line 8, steam discharge pipeline 9, on the casing of servo valve 17 and industrial back pressure turbine 1
Drain pipe 11 and stop valve 12 are respectively arranged with, drain pipe 11 is accessed into trench 15, is started with discharging industrial back pressure turbine 1
Before, the steam condensate that is produced in initial operating stage and stopping process, be additionally provided with blowdown piping on industrial back pressure turbine 1
13, for discharging Low Temperature Steam when industrial back pressure turbine 1 is started shooting.
A kind of sulfuric acid HRS saturated vapors energy stepped utilization method, its Application way is as follows：By 0.8MPa HRS saturated vapors
0.8MPa saturated vapors in main pipeline 2 are discharged into steam inlet pipe line 8, and the superheated steam in 3.82MPa superheated steams pipeline 5 is led to
Cross steam pipe line 10 and be discharged into steam inlet pipe line 8 and 0.8MPa saturated vapors are heated, to improve entering for industrial back pressure turbine 1
Vapour and exhaust temperature, therefore steam condensate will not be produced in industrial back pressure turbine 1, steam inlet pipe line 8 and steam discharge pipeline 9,
Avoid steam causes the industrial water slug of back pressure turbine 1 and blade erosion containing wet.By the 0.8MPa saturated vapors row after heating
Enter the industrial acting of back pressure turbine 1 decrease temperature and pressure, drive high pressure water feeding pump for boiler 4 to run by industrial back pressure turbine 1, then
The Back-pressure steams of 7 discharges will be exported from industrial back pressure turbine 1 0.49MPa low-pressure steams main pipe 3 is incorporated to by steam discharge pipeline 9.
HRS0.8MPa saturated vapors instead of decompression valve 14 by the acting of industrial back pressure turbine 1, reclaim steam pressure-reducing waste
Available energy, saved the power consumption of high pressure water feeding pump for boiler 4, realize steam can cascade utilization.Under normal circumstances, sulphur
The amount of sour device HRS0.8MPa saturated vapors drives industrial back pressure turbine 1 to drive high pressure water feeding pump for boiler 4 enough, and has richness
Remaining, former decompression valve 14 and pipeline still retain, and unnecessary steam is incorporated to 0.49MPa after being depressurized by decompression valve 14
Low-pressure steam main pipe 3.
Claims (6)
1. a kind of sulfuric acid HRS saturated vapors energy cascade utilization device, it includes industrial back pressure turbine, 0.8MPa HRS saturations
Main steam header road, decompression valve, 0.49MPa low-pressure steams main pipe, high pressure water feeding pump for boiler and 3.82MPa overheated steam pipes
Line, the 0.8MPa HRS saturated vapors main pipeline is connected with 0.49MPa low-pressure steam main pipes, and the decompression valve is installed
On 0.8MPa HRS saturated vapor main pipelines, inlet and outlet is provided with the industrial back pressure turbine, it is characterised in that：
The import of the industrial back pressure turbine passes through steam inlet pipe line and the 0.8MPa HRS saturated vapors positioned at decompression valve leading portion
Main pipeline is connected, and the 3.82MPa superheated steams pipeline is connected by steam pipe line with steam inlet pipe line, the 0.49MPa
Low-pressure steam main pipe is connected by steam discharge pipeline with the outlet of industrial back pressure turbine, the industrial back pressure turbine and high pressure
Boiler feed pump is connected.
2. a kind of sulfuric acid HRS saturated vapors energy cascade utilization device according to claim 1, it is characterised in that：The work
Industry back pressure turbine is single-stage impulse back pressure turbine.
3. a kind of sulfuric acid HRS saturated vapors energy cascade utilization device according to claim 1 or 2, it is characterised in that：It is described
Industrial back pressure turbine is connected with high pressure water feeding pump for boiler direct-connection transmission.
4. a kind of sulfuric acid HRS saturated vapors energy cascade utilization device according to claim 1 or 2, it is characterised in that：It is described
It is provided with steam inlet pipe line on first check-valve and servo valve, the steam discharge pipeline and is provided with the second stop valve and the second non-return
The 3rd stop valve is provided with valve, the steam pipe line.
5. a kind of sulfuric acid HRS saturated vapors energy cascade utilization device according to claim 4, it is characterised in that：It is described enter
Steam pipe line, steam discharge pipeline, respectively it is provided with drain pipe and stop valve on the casing of servo valve and industrial back pressure turbine.
6. a kind of sulfuric acid HRS saturated vapors energy stepped utilization method, it is characterised in that its Application way is as follows：By 0.8MPa HRS
0.8MPa saturated vapors in saturated vapor main pipeline are discharged into steam inlet pipe line, by the overheat in 3.82MPa superheated steam pipelines
Steam is discharged into steam inlet pipe line by steam pipe line and 0.8MPa saturated vapors is heated, and the 0.8MPa saturations after heating are steamed
Vapour is discharged into industrial back pressure turbine acting decrease temperature and pressure, drives high pressure water feeding pump for boiler to run by industrial back pressure turbine, so
The Back-pressure steam discharged will be exported from industrial back pressure turbine afterwards 0.49MPa low-pressure steam main pipes are incorporated to by steam discharge pipeline.
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| CN201710090821.2A CN106948876A (en) | 2017-02-20 | 2017-02-20 | A kind of sulfuric acid HRS saturated vapor energy cascade utilization devices and method |
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| CN201710090821.2A CN106948876A (en) | 2017-02-20 | 2017-02-20 | A kind of sulfuric acid HRS saturated vapor energy cascade utilization devices and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108469017A (en) * | 2018-04-04 | 2018-08-31 | 浙江巨化热电有限公司 | A kind of pair is dragged electric pump back pressure turbine comprehensive utilization device and its method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201265435Y (en) * | 2008-09-16 | 2009-07-01 | 河北省首钢迁安钢铁有限责任公司 | Replacing pressure reducing valve by screw expansion power generator in steel-making exhaust heat steam recovery and utilization course |
| CN102562189A (en) * | 2012-03-14 | 2012-07-11 | 思安新能源股份有限公司 | Low-pressure saturated steam recycling equipment |
| US20150000276A1 (en) * | 2012-01-19 | 2015-01-01 | Siemens Aktiengesellschaft | Auxiliary steam generator system for a power plant |
-
2017
- 2017-02-20 CN CN201710090821.2A patent/CN106948876A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201265435Y (en) * | 2008-09-16 | 2009-07-01 | 河北省首钢迁安钢铁有限责任公司 | Replacing pressure reducing valve by screw expansion power generator in steel-making exhaust heat steam recovery and utilization course |
| US20150000276A1 (en) * | 2012-01-19 | 2015-01-01 | Siemens Aktiengesellschaft | Auxiliary steam generator system for a power plant |
| CN102562189A (en) * | 2012-03-14 | 2012-07-11 | 思安新能源股份有限公司 | Low-pressure saturated steam recycling equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108469017A (en) * | 2018-04-04 | 2018-08-31 | 浙江巨化热电有限公司 | A kind of pair is dragged electric pump back pressure turbine comprehensive utilization device and its method |
| CN108469017B (en) * | 2018-04-04 | 2023-09-15 | 浙江巨化热电有限公司 | Comprehensive utilization device and method for back pressure steam turbine of double-drag electric pump |
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Application publication date: 20170714 |