CN101097115A - Dead steam reclaiming method and equipment thereof - Google Patents
Dead steam reclaiming method and equipment thereof Download PDFInfo
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- CN101097115A CN101097115A CNA2007100166721A CN200710016672A CN101097115A CN 101097115 A CN101097115 A CN 101097115A CN A2007100166721 A CNA2007100166721 A CN A2007100166721A CN 200710016672 A CN200710016672 A CN 200710016672A CN 101097115 A CN101097115 A CN 101097115A
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Abstract
The invention discloses a waste gas recovery method and device in waste heat utilizing technique domain, which is characterized by the following: generating waste gas from amidon by-product drying process; leading in maize milk condensing device; proceeding condensed process fro the maize milk; setting the waste gas recovery device as tube bundle dryer, maize milk condensing device and waste gas outlet on the tube bundle dryer; setting the maize milk condensing device as multi-effect evaporator; setting the evaporator as tube pass and shell pass; arranging washing gas tower between the tube bundle dryer and the maize milk condensing device. This invention possesses lower energy consumption, which can save energy from the maize milk condensing production.
Description
Technical field
The invention belongs to the waste heat utilization technology field, be specifically related to a kind of waste vapour recoverying and utilizing method and equipment thereof.
Background technology
The important procedure of starch byproduct production is the oven dry of byproduct, the production of general employing pipe bundle drier, the evaporation of byproduct moisture can produce a large amount of indirect steams in the dry materials process, above-mentioned steam is commonly referred to as waste vapour, these waste vapour volume flows are big and calorific value is low, are being mingled with small amount of fibers, albumen and a large amount of air again, and are not easy to be recycled, directly a large amount of heats are not only wasted in discharging, and contaminated environment.
Summary of the invention
The waste vapour recoverying and utilizing method and the equipment thereof that the purpose of this invention is to provide a kind of energy-saving and cost-reducing, environmental protection
The present invention is achieved through the following technical solutions: promptly a kind of waste vapour recoverying and utilizing method, it is characterized in that will produce in the starch byproduct baking operation waste vapour introduce the corn steep liquor concentrator, corn steep liquor is concentrated processing.
In order to prevent that small amount of fibers, albumen in the waste vapour from entering the corn steep liquor concentrator, cause obstruction, waste vapour will carry out spray cleaning with washings before entering the corn steep liquor concentrator.
The temperature of described washings is higher 1～5 ℃ than the temperature of waste vapour.Because of the waste vapour temperature is lower, about 90～95 ℃, be dissolved in water for avoiding waste vapour temperature in washing process to reduce, the temperature of the washings of spray should be higher 1～5 ℃ or higher than waste vapour temperature, so just guaranteed the washing quality of waste vapour.
A kind of waste vapour recycling equipment, comprise pipe bundle drier, the corn steep liquor concentrator, the tube bank dryer is provided with the waste vapour outlet, the corn steep liquor concentrator comprises multi-effect evaporator, evaporimeter comprises tube side and shell side, it is characterized in that being provided with between pipe bundle drier and the corn steep liquor concentrator and wash the vapour tower, the cat head of washing the vapour tower is provided with venthole, be provided with delivery port at the bottom of the tower, the top of washing the body of the tower of vapour tower is provided with water inlet, the bottom is provided with air intake, sewage draining exit, the outlet of waste vapour on the pipe bundle drier is connected with air intake on washing the vapour tower by pipeline, the shell side import of venthole by the zero single-effect evaporator in pipeline and the corn steep liquor concentrator of washing on the vapour tower is connected, the shell side outlet of zero single-effect evaporator is connected with blower fan by pipeline, the water inlet of washing on the vapour tower is connected with hot-water cylinder by pipeline respectively with delivery port, and the pipeline between water inlet and the hot-water cylinder is provided with circulating pump.
Evaporimeter in the corn steep liquor concentrator is mainly by the negative pressure of vacuum evaporation, but the temperature of utilizing the indirect steam that waste vapour produces as thermal source in zero single-effect evaporator will be hanged down about 10 ℃ than the indirect steam temperature that the evaporimeter of traditional handicraft produces, for guaranteeing that heat effectively exchanges and keep lower vacuum, the heat exchange area of each single-effect evaporator is greater than the heat exchange area of the evaporimeter of pressing traditional design in the described evaporimeter, and suitably increase the material circular flow, could guarantee continuous evaporation under lower vacuum.
The present invention had both effectively recycled the waste vapour that the oven dry of starch byproduct produces, and had saved the energy of the concentrated production usefulness of corn steep liquor again, had advantage energy-saving and cost-reducing, environmental protection.Waste vapour enters the corn steep liquor concentrator before through spray cleaning, removed the small amount of fibers in the waste vapour, albumen, after the waste vapour utilization again discharging just can not pollute environment, through overtesting, with 150,000 tons of/year starch projects is example, and byproduct oven dry waste vapour amount is about 2.8 ten thousand M
3/ H, 85 tons of daily output corn steep liquors, 2,200,000 yuan of conventional art design investments, 120 tons of day consumption steam.Adopt the present invention to design 3,500,000 yuan of investments, increase by 1,300,000 yuan of investments, the load 170KW that increases electric power, 40 tons of day consumption steam are saved 80 tons of steam.Through calculating:
1. increase investment: 1,300,000 yuan.
2. depreciation: ten thousand yuan of 1,300,000 yuan * (1-5%)/10=12.35.
3. year increase by ten thousand yuan of the electricity charge: 170KW * 80% * 0.52 * 24 * 300=50.92.
4. year save ten thousand yuan/year of steam expense: 80T * 90.00 * 300=216.
5. economic benefit: 2,160,000 yuan-50.92 ten thousand yuan-12.35 ten thousand yuan=152.73 ten thousand yuan.
6. investment payback time: 1,300,000 yuan of ÷ 152.73 ten thousand yuan/year=0.85 year.
The present invention can be widely used in the starch byproduct processing industry.
Description of drawings
Accompanying drawing is a schematic diagram of the present invention.
As shown in FIG.: 1 pipe bundle drier, 2 hot-water cylinders, 3 circulating pumps, 4 wash the vapour tower, 5 blower fans, 6 corn steep liquor concentrators, 7 zero single-effect evaporators, 8 1st effective evaporators, 9 2nd effect evaporators, 10 triple effect evaporators, 11 condensers.
The specific embodiment
As shown in drawings: the present invention includes pipe bundle drier 1, wash vapour tower 4, corn steep liquor concentrator 6, pipe bundle drier 1 is provided with the waste vapour outlet, and the corn steep liquor concentrator comprises zero single-effect evaporator 7,1st effective evaporator 8,2nd effect evaporator 9, triple effect evaporator 10, condenser 11.Pipe bundle drier 1 is provided with waste gas outlet, the cat head of washing vapour tower 4 is provided with venthole, be provided with delivery port at the bottom of the tower, the top of washing the body of the tower of vapour tower 4 is provided with water inlet, the bottom is provided with air intake, sewage draining exit, the outlet of waste vapour on the pipe bundle drier 1 is connected with air intake on washing vapour tower 4 by pipeline, the shell side import of venthole by the zero single-effect evaporator 7 in pipeline and the corn steep liquor concentrator 6 of washing on the vapour tower 4 is connected, the shell side outlet of zero single-effect evaporator 7 is connected with blower fan 5 by pipeline, the water inlet of washing on the vapour tower 4 is connected with hot-water cylinder 2 by pipeline respectively with delivery port, and the pipeline between water inlet and the hot-water cylinder 2 is provided with circulating pump 3.
When the present invention works, the waste vapour that pipe bundle drier 1 produces is discharged by the waste vapour outlet, through pipeline, enter by the air intake of washing vapour tower 4 bottoms and to wash in the vapour tower 4, ON cycle pump 3, washings in the hot-water cylinder 2 are delivered to wash in the vapour tower 4 spray, the temperature of described washings is higher 2 ℃ than waste vapour temperature, under the effect of washings, small amount of fibers in the waste vapour, albumen is separated, discharge by the sewage draining exit of washing vapour tower 4 bottoms, waste vapour after the purification is discharged by the venthole of washing vapour tower 4 tops, enter the shell side of zero single-effect evaporator 7 by pipeline, the corn steep liquor that circulates in the tube side to zero single-effect evaporator 7 concentrates heating, waste vapour after the cooling is discharged the shell side of zero single-effect evaporator 7 under the effect of blower fan 5, material is heated the back and produces a part of indirect steam under suction function in zero single-effect evaporator 7 tube sides in said process, the shell side that enters 1st effective evaporator 8 by pipeline is to material heating in 1st effective evaporator 8 tube sides, in like manner, the indirect steam that 1st effective evaporator 8 produces enters the shell side of 2nd effect evaporator 9 to material heating in 2nd effect evaporator 9 tube sides, the indirect steam that 2nd effect evaporator 9 concentrates generation enters the shell side of triple effect evaporator 10 to material heating in triple effect evaporator 10 tube sides, and triple effect evaporator 10 concentrates discharges after the indirect steams that produce enter condenser 11 condensations.
Claims (4)
1. a waste vapour recoverying and utilizing method is characterized in that the waste vapour introducing corn steep liquor concentrator that will produce in the starch byproduct baking operation concentrates processing to corn steep liquor.
2. a kind of waste vapour recoverying and utilizing method according to claim 1 is characterized in that waste vapour will carry out spray cleaning with washings before entering the corn steep liquor concentrator.
3. a kind of waste vapour recoverying and utilizing method according to claim 2 is characterized in that the temperature of described washings is higher 1～5 ℃ than the temperature of waste vapour.
4. waste vapour recycling equipment, comprise pipe bundle drier, the corn steep liquor concentrator, the tube bank dryer is provided with the waste vapour outlet, the corn steep liquor concentrator comprises multi-effect evaporator, evaporimeter is divided into tube side and shell side, it is characterized in that being provided with between pipe bundle drier and the corn steep liquor concentrator and wash the vapour tower, the cat head of washing the vapour tower is provided with venthole, be provided with delivery port at the bottom of the tower, the top of washing the body of the tower of vapour tower is provided with water inlet, the bottom is provided with air intake, sewage draining exit, the outlet of waste vapour on the pipe bundle drier is connected with air intake on washing the vapour tower by pipeline, the shell side import of venthole by the zero single-effect evaporator in pipeline and the corn steep liquor concentrator of washing on the vapour tower is connected, the shell side outlet of zero single-effect evaporator is connected with blower fan by pipeline, the water inlet of washing on the vapour tower is connected with hot-water cylinder by pipeline respectively with delivery port, and the pipeline between water inlet and the hot-water cylinder is provided with circulating pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100166721A CN101097115A (en) | 2007-06-26 | 2007-06-26 | Dead steam reclaiming method and equipment thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100166721A CN101097115A (en) | 2007-06-26 | 2007-06-26 | Dead steam reclaiming method and equipment thereof |
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| Publication Number | Publication Date |
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| CN101097115A true CN101097115A (en) | 2008-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007100166721A Pending CN101097115A (en) | 2007-06-26 | 2007-06-26 | Dead steam reclaiming method and equipment thereof |
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| CN (1) | CN101097115A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102068877A (en) * | 2010-11-14 | 2011-05-25 | 河南永昌飞天淀粉糖有限公司 | New process for reclaiming starch factory steam pipe bundle exhaust |
| CN102350065A (en) * | 2011-07-06 | 2012-02-15 | 邓亚东 | Evaporator with utilizing pipe bundle drier exhaust |
| CN102636014A (en) * | 2012-04-25 | 2012-08-15 | 青岛海林电子材料科技有限公司 | Multiple-effect drying technology |
| CN104061778A (en) * | 2014-07-03 | 2014-09-24 | 刘吉生 | Energy-saving use method for pipe bundle drier |
| CN104329923A (en) * | 2014-10-24 | 2015-02-04 | 中盈长江国际新能源投资有限公司 | Method and equipment for drying biomass fuel by using residual heat of flue gas of power plant |
| CN104788577A (en) * | 2015-04-13 | 2015-07-22 | 宝鸡阜丰生物科技有限公司 | Method for recycling secondary steam generated in corn starch wet milling production process |
| CN106509946A (en) * | 2016-10-21 | 2017-03-22 | 江苏迈安德节能蒸发设备有限公司 | Production system of corn syrup addition fibers |
| CN106554424A (en) * | 2016-11-10 | 2017-04-05 | 吉林中粮生化有限公司 | Recycled and combined with heat pump the method for realizing energy-conservation to being dried tail gas |
| CN114440670A (en) * | 2021-12-23 | 2022-05-06 | 肇庆焕发生物科技有限公司 | Method for comprehensively utilizing waste heat in corn starch production |
-
2007
- 2007-06-26 CN CNA2007100166721A patent/CN101097115A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102068877A (en) * | 2010-11-14 | 2011-05-25 | 河南永昌飞天淀粉糖有限公司 | New process for reclaiming starch factory steam pipe bundle exhaust |
| CN102350065A (en) * | 2011-07-06 | 2012-02-15 | 邓亚东 | Evaporator with utilizing pipe bundle drier exhaust |
| CN102350065B (en) * | 2011-07-06 | 2014-03-26 | 邓亚东 | Evaporator with utilizing pipe bundle drier exhaust |
| CN102636014A (en) * | 2012-04-25 | 2012-08-15 | 青岛海林电子材料科技有限公司 | Multiple-effect drying technology |
| CN102636014B (en) * | 2012-04-25 | 2014-04-23 | 青岛海林电子材料科技有限公司 | Multiple-effect drying technology |
| CN104061778A (en) * | 2014-07-03 | 2014-09-24 | 刘吉生 | Energy-saving use method for pipe bundle drier |
| CN104329923A (en) * | 2014-10-24 | 2015-02-04 | 中盈长江国际新能源投资有限公司 | Method and equipment for drying biomass fuel by using residual heat of flue gas of power plant |
| CN104329923B (en) * | 2014-10-24 | 2016-06-15 | 中盈长江国际新能源投资有限公司 | Utilize method and the equipment thereof of power-plant flue gas waste heat dried biomass fuel |
| CN104788577A (en) * | 2015-04-13 | 2015-07-22 | 宝鸡阜丰生物科技有限公司 | Method for recycling secondary steam generated in corn starch wet milling production process |
| CN106509946A (en) * | 2016-10-21 | 2017-03-22 | 江苏迈安德节能蒸发设备有限公司 | Production system of corn syrup addition fibers |
| CN106554424A (en) * | 2016-11-10 | 2017-04-05 | 吉林中粮生化有限公司 | Recycled and combined with heat pump the method for realizing energy-conservation to being dried tail gas |
| CN114440670A (en) * | 2021-12-23 | 2022-05-06 | 肇庆焕发生物科技有限公司 | Method for comprehensively utilizing waste heat in corn starch production |
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Open date: 20080102 |