CN105781647A - Low-pressure steam power generation method - Google Patents
Low-pressure steam power generation method Download PDFInfo
- Publication number
- CN105781647A CN105781647A CN201610272764.5A CN201610272764A CN105781647A CN 105781647 A CN105781647 A CN 105781647A CN 201610272764 A CN201610272764 A CN 201610272764A CN 105781647 A CN105781647 A CN 105781647A
- Authority
- CN
- China
- Prior art keywords
- low
- pressure steam
- steam
- working medium
- trt
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
-
- 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
- F01D15/10—Adaptations for driving, or combinations with, electric generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
- F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention provides a method for achieving power generation by means of byproduct saturated steam of a butyraldehyde hydrogenation reactor. According to the method, the low-pressure diffused steam is used for low-temperature thermal power generation, so that extra electric energy is obtained under the condition that no extra fuel is needed; and meanwhile, consumption of circulating water is greatly reduced, and two purposes are achieved.
Description
Technical field
The invention belongs to chemical field, be specifically related to a kind of method utilizing butyraldehyde hydrogenation reactor by-product saturated vapor to generate electricity.
Background technology
Developing a circular economy is that China builds a conservation-minded society one of state basic policy, especially enterprise implement low cost strategy, the important channel that enhances the competitiveness.In conjunction with enterprise present situation, promote advanced, the ripe new technique of employing, new equipment, new technology, scientific and reasonable enforcement energy classified utilization, do one's utmost to recycle the various overbottom pressure, the residual heat resources that produce in production process, realize utilization of energy maximizing the benefits, be one of the important content of enterprise development recycling economy.
The waste heat energy is generally divided into high temperature, middle temperature, low temperature three class.Temperature is the high temperature energy more than 650 DEG C, and 230-650 DEG C is the middle temperature energy, and less than 230 DEG C is low-temperature energy sources.Steam turbine or the generating of gas turbine drive electrical generators group can be directly driven to be used for high temperature, middle temperature afterheat steam, and the low temperature exhaust heat energy accounts for the 30% of waste heat energy total amount, utilize this part of waste heat energy to generate electricity, to improving energy utilization rate, there is important function.
In metallurgy industry, low-pressure steam is mainly used in the purposes such as heating, heat tracing, insulation and blowing pipeline.The pressure limit of general low-pressure steam pipe network is at 1.0-1.6MPa, and temperature range is at 180-220 DEG C, and the pressure that each region low-pressure steam terminal temperature difference needs is 0.5-0.7MPa, and temperature is 150-160 DEG C, makes low-quality waste heat fail to make full use of.China's energy utilization rate only has about 30%, and some developed country's energy utilization rates are all more than 50%, and the energy utilization rate of the U.S. is more than 60%.Therefore effective use of energy sources is an important topic.
The Technology of temperature reducing and pressure reducing system is mostly adopted to realize the blood pressure lowering purpose of low-pressure steam at present.
Summary of the invention
The method that it is an object of the invention to provide the generating of a kind of low-pressure steam, the method is based on organic Rankine bottoming cycle (ORC, this strand of steam is recycled by generation technology OrganicRankineCycle), additional electrical energy is obtained when not consuming additional fuel, turn waste into wealth, improve energy utilization rate, reduce the energy consumption per unit of output value, promote energy-saving and emission-reduction.
One butyraldehyde hydrogenation reactor by-product 0.08-0.1MPa (G) saturated vapor 5 ton hour.TRT scale designs according to 500kW, adopts circulating water.Introduce steam from other unit, it is ensured that the TRT oepration at full load whole year simultaneously.
Adopt organic Rankine bottoming cycle generation technology (ORC, OrganicRankineCycle) that this part low-pressure steam is used, utilize lower boiling organic working medium as circulatory mediator, low temperature exhaust heat is converted into electric energy.TRT is made up of vaporizer, turbo-expander, electromotor, condenser, working medium pump, sees Fig. 1.During operation, liquid organic medium enters into vapo(u)rization system through working medium pump, organic working medium and low-pressure steam (0.08～0.1MPag) heat exchange in vapo(u)rization system, organic working medium is heated to form steam, and low-pressure steam (0.08～0.1MPag) is condensed.The working substance steam produced enters in turbo-expander, promotes decompressor to rotate and drive electrical generators generating, and the working substance steam after acting enters into again condenser system, is again condensed into liquid organic working medium, completes a circulation.
This programme utilizes low pressure to diffuse steam to carry out low-temperature heat power generation utilization, obtains additional electrical energy when not increasing additional fuel, recirculated water consumption is greatly reduced again simultaneously, kills two birds with one stone.
Accompanying drawing explanation
Fig. 1 TRT schematic diagram
Detailed description of the invention
Embodiment 1
One butyraldehyde hydrogenation reactor by-product 0.08-0.1MPa (G) saturated vapor 5 ton hour.This butyraldehyde hydrogenation reactor is shell and tube reactor, installs catalyst in tubulation additional, and shell-side is demineralized water, utilizes steam generation by reaction heat, and reactor top hangs with a steam bubble.Steam bubble outlet vapor pipeline is configured without steam-flow meter, by steam pressure governor valve control hydrogenation reactor catalyst layer temperature, and the governor valve control reactor steam bubble liquid level that adds water.This some vapor adopts cooling by water at present, and recirculated water consumption is at 200～300t/h.
Adopt organic Rankine bottoming cycle generation technology (ORC, OrganicRankineCycle) that this part low-pressure steam is used, utilize lower boiling organic working medium as circulatory mediator, low temperature exhaust heat is converted into electric energy.TRT is made up of vaporizer, turbo-expander, electromotor, condenser, working medium pump, sees Fig. 1.During operation, liquid organic medium enters into vapo(u)rization system through working medium pump, organic working medium and low-pressure steam (0.08～0.1MPag) heat exchange in vapo(u)rization system, organic working medium is heated to form steam, and low-pressure steam (0.08～0.1MPag) is condensed.The working substance steam produced enters in turbo-expander, promotes decompressor to rotate and drive electrical generators generating, and the working substance steam after acting enters into again condenser system, is again condensed into liquid organic working medium, completes a circulation.
The average generating capacity of embodiment 2
When quantity of steam is 5t/h, pressure 0.1MPa, average generated energy is 0.1MW.In actual motion, steam pressure, flow can wide variation, and do not affect unit operation, although generated energy changes, but still in grid-connected power supply.
Embodiment 3 Energy harvesting effect assessment
Due to afterheat steam, its energy conversion rate can be considered.By 0.1MPa pressure, steam energy per ton is 200kWh, converts by generating electricity, and steam per ton can generate electricity 100kwh, process self power consumption 0.8kwh, and therefore energy transformation ratio is (100-0.8) ÷ 200=50%.From conversion ratio it can be seen that big energy is still consumed in the middle of process, but from this unit comprehensive benefit, year benefit very considerable, including the environmental benefit that the solution of the environmental pollutions such as noise, heat distribute brings.
Embodiment 4 economic benefit table
Using low-pressure steam electricity-generating method provided by the invention, producible economic benefit is shown in following table.
| Project | Numerical value |
| Steam production t/h | 5 |
| Steam pressure MPa | 0.08-0.1 |
| Generated output kW | 500 |
| Annual electricity generating capacity ten thousand kW h | 300 |
| Electricity price unit/kW h | 0.6 |
| Power benefit ten thousand yuan/year | 180 |
| Save cooling Wat er benefit ten thousand yuan/year | 300 |
| Total economic benefit ten thousand yuan/year | > 500 |
Claims (8)
1. a method for low-pressure steam generating, is characterized by, described low-pressure steam, refers to the by-product saturated vapor of butyraldehyde hydrogenation reactor.
2. the method for claim 1, is characterized by, described low-pressure steam, refers to a butyraldehyde hydrogenation reactor by-product 0.08-0.1MPa saturated vapor, and yield is 5 ton hour about.
3. the method for claim 1, is characterized by, TRT used is made up of vaporizer, turbo-expander, electromotor, condenser, working medium pump, sees Fig. 1.
4. method as claimed in claim 3, is characterized by, TRT utilizes lower boiling organic working medium as circulatory mediator, and low temperature exhaust heat is converted into electric energy, it is achieved utilize the purpose of low-pressure steam.
5. the method for claim 1, it is characterized by, TRT inner loop process is: liquid organic medium enters into vapo(u)rization system through working medium pump, organic working medium and low-pressure steam heat exchange in vapo(u)rization system, organic working medium is heated to form steam, low-pressure steam is condensed, the working substance steam produced enters in turbo-expander, decompressor is promoted to rotate and drive electrical generators generating, working substance steam after acting enters into again condenser system, again it is condensed into liquid organic working medium, completes a circulation.
6. method as claimed in claim 5, is characterized by, is 0.08-0.1MPa with the low-pressure steam of organic working medium heat exchange in vapo(u)rization system.
7. method as claimed in claim 5, is characterized by, the low-pressure steam being condensed is 0.08-0.1MPa.
8. the method for claim 1, is characterized by, the scale of TRT is 500kW.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610272764.5A CN105781647A (en) | 2016-04-28 | 2016-04-28 | Low-pressure steam power generation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610272764.5A CN105781647A (en) | 2016-04-28 | 2016-04-28 | Low-pressure steam power generation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105781647A true CN105781647A (en) | 2016-07-20 |
Family
ID=56399851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610272764.5A Pending CN105781647A (en) | 2016-04-28 | 2016-04-28 | Low-pressure steam power generation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105781647A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103055766A (en) * | 2012-12-12 | 2013-04-24 | 烟台万华聚氨酯股份有限公司 | Two-section type switchable tubular reactor and method for preparing alcohol through aldehyde gas phase hydrogenation by using same |
| CN103154444A (en) * | 2010-05-07 | 2013-06-12 | 奥尔灿能源有限公司 | Control of a thermal cyclic process |
| CN203050821U (en) * | 2012-12-28 | 2013-07-10 | 中石化宁波工程有限公司 | Methanol reaction heat recovery system |
| CN103717699A (en) * | 2011-04-21 | 2014-04-09 | 瑞典爱玛龙儿童车制造有限公司 | Working fluid for rankine cycle |
| CN104675460A (en) * | 2013-11-29 | 2015-06-03 | 中央硝子株式会社 | Method For Converting Thermal Energy Into Mechanical Energy, Organic Rankine Cycle Device, And Method For Replacing Working Fluid |
-
2016
- 2016-04-28 CN CN201610272764.5A patent/CN105781647A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103154444A (en) * | 2010-05-07 | 2013-06-12 | 奥尔灿能源有限公司 | Control of a thermal cyclic process |
| CN103717699A (en) * | 2011-04-21 | 2014-04-09 | 瑞典爱玛龙儿童车制造有限公司 | Working fluid for rankine cycle |
| CN103055766A (en) * | 2012-12-12 | 2013-04-24 | 烟台万华聚氨酯股份有限公司 | Two-section type switchable tubular reactor and method for preparing alcohol through aldehyde gas phase hydrogenation by using same |
| CN203050821U (en) * | 2012-12-28 | 2013-07-10 | 中石化宁波工程有限公司 | Methanol reaction heat recovery system |
| CN104675460A (en) * | 2013-11-29 | 2015-06-03 | 中央硝子株式会社 | Method For Converting Thermal Energy Into Mechanical Energy, Organic Rankine Cycle Device, And Method For Replacing Working Fluid |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103629857B (en) | Based on the thermal power cogeneration central heating system of heat pump | |
| CN103691260B (en) | Heat recovery water-saving system for desulfuration by wet process and process thereof | |
| CN202732203U (en) | Novel hydropower station | |
| CN103673031A (en) | System capable of greatly lowering combined heat and power generation centralized heating temperature | |
| CN110078904B (en) | Polyester esterification steam waste heat utilization method and device | |
| CN103629724B (en) | Significantly reduce the system of cogeneration of heat and power central heating temperature | |
| CN207348906U (en) | A kind of hydrogen of coupled solar-oxygen combustion association circulating power generation system | |
| CN203148247U (en) | Electricity generating system utilizing revolving furnace steam sintering waste heat in combined mode | |
| CN217844064U (en) | Nuclear energy heat supply and steam supply coupling system | |
| CN205400830U (en) | 300MW grade fire coal is taken out combined heat and power units restriction steam extraction improvement heat supply with fixed attention and is compared system | |
| CN110416572A (en) | A kind of heating system and method using fuel cell waste-heat formic acid reactor | |
| CN105781647A (en) | Low-pressure steam power generation method | |
| CN214007248U (en) | Thermoelectric decoupling system of thermal power generating unit | |
| CN204851350U (en) | Utilize living water heating system of power plant's exhaust steam waste heat | |
| CN210403905U (en) | Heating system for heating formic acid reactor by using waste heat of fuel cell | |
| CN203545714U (en) | Coupling device of high-temperature gas cooled reactor and low-temperature multi-effect distillation sea water desalination device | |
| CN202280490U (en) | Device for converting heat energy of remained hot water | |
| CN201517430U (en) | Steam condensation type turbo set residual-heat heating system | |
| CN205297663U (en) | Water conservancy circulation combined type power station | |
| CN206221009U (en) | Single-row feed pump feed-water valve system and the thermoelectricity generating set using the system | |
| CN205593031U (en) | Energy -saving heat supply network circulating water system | |
| CN218846098U (en) | Steam system based on hydrogen fuel cell waste heat | |
| CN203441551U (en) | Turbonator-based cooling water treatment system | |
| CN213687340U (en) | Organic Rankine cycle geothermal power generation and heat supply system | |
| CN110469375B (en) | Steam-water double-pressure waste heat power generation system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160720 |