CN102644490A - Combined heat and power energy recycling system for furfural production - Google Patents
Combined heat and power energy recycling system for furfural production Download PDFInfo
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- CN102644490A CN102644490A CN2011100411151A CN201110041115A CN102644490A CN 102644490 A CN102644490 A CN 102644490A CN 2011100411151 A CN2011100411151 A CN 2011100411151A CN 201110041115 A CN201110041115 A CN 201110041115A CN 102644490 A CN102644490 A CN 102644490A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses a combined heat and power energy recycling system for the furfural production, which is used for carrying out comprehensive recycling on wastewater and waste residues, which are generated on a furfural production line. Overheat steam is prepared by using the furfural waste residues as fuel; power is generated by utilizing the overheat steam and the wastewater below a tower is circularly heated; acid steam which is separated by an acid steam-water separation device is transferred to a production line hydrolysis kettle; and condensed water of the steam-water separation device and a condensing device is fed into a water feed device to provide the water for a steam preparation device. According to the invention, the recycling of various energy resources such as the residues, the water, the heat and the electricity and the zero emission of the wastewater below the furfural production line tower can be implemented; the environmental pollution is effectively avoided; and the combined heat and power energy recycling system is in the service of people. Moreover, the combined heat and power energy recycling system has the advantages that the combined heat and power energy recycling system has obvious effects and compact and reasonable structure design and is simple in process; the system is stable and reliable to operate, is environment-friendly and energy-saving and has emission reduction property and high efficiency; the heat and the electricity are mutually regulated; the combined heat and power energy recycling system has very wide application prospect and is suitable for wide industrial popularization; and the like.
Description
Technical field: the present invention relates to a kind of energy cyclic utilization system, especially relate to a kind of energy cyclic utilization system that the waste water and the waste residue of the generation of furfural production line are carried out comprehensive cyclic utilization.
Background technique: furfural is a kind of chemical industry basic material, and it is corncob to be pulverized feed steam in the hydrolysis kettle of packing into after sulfuric acid with dilution stirs and be hydrolyzed and form.China's maize sown area is bigger, produces the abundant raw material of furfural, adds the demand of domestic and international market, and the furfurol industry development is advanced by leaps and bounds, and scale constantly enlarges, and output also improves rapidly.But in the furfural production process, to discharge under a large amount of towers waste water and produce a large amount of furfuraldehyde waste slags.According to the preliminary statistics: produce furfural per ton and approximately want 20-22 tons of sewage effluents, 12-15 tons of furfuraldehyde waste slags.The sewage of discharging is acid, and its COD, BOD numerical value are very big.These sewage will cause serious pollution to ecotope.The furfuraldehyde waste slag of heap man's cap used in ancient times has also been deepened the pollution to surface water.Quite big owing to the consumption of furfural raw materials simultaneously, and increase year by year, along with the rapid raising of furfural output, cause the limited raw material that the soil provided to be difficult to satisfy the demand of furfural manufacturing enterprise.Cause the part furfural manufacturing enterprise can not full production, even stop production and wait to expect.The price of corncob also goes up year after year, has increased the weight of the burden of enterprise.And expenses such as water, electricity consumption, waste water treatment are occupied very big share in the enterprise production in cost of production, and these all will bring huge pressure to enterprise.According to national energy-saving and emission-reduction, recycling economy strategy target, in order to reduce production costs, reduce the burden on enterprises, satisfy the demand of domestic and international market, reduce and stop pollution ecotope.Guarantee the sound development of furfural production industry, just must take scientific and effective circulation comprehensive to utilize measure, make furfural manufacturing enterprise unexpectedly rescued from a desperate situation waste water under the tower and furfuraldehyde waste slag.But up to the present, still the practicable method of neither one makes furfural manufacturing enterprise really reach energy-saving and emission-reduction, the circulation comprehensive utilization of pollution-free and the energy.
Summary of the invention: the cogeneration energy cyclic utilization system that the object of the present invention is to provide a kind of furfural to produce, this system mainly is in order to solve the severe contamination that waste water and furfuraldehyde waste slag under the tower causes ecotope and the problem of furfural manufacturing enterprise energy circulation comprehensive utilization.
The cogeneration energy cyclic utilization system that furfural of the present invention is produced comprises the furfural production line, and this system also comprises:
A, the furfuraldehyde waste slag that utilizes the furfural production line to produce are made fuel; With the steam production device of feedwater preparation superheated vapor in the water supply device, the heating power potential energy of superheated vapor is converted into the steam-turbine plant of mechanical energy and mechanical energy is converted to electric energy again and is used for the rotor machine of furfural production line.
B, the superheated vapor that utilizes sucking condensing turbine to extract out heat waste water under the tower; Make it form the evaporator of acid steam water interface; Acid steam water interface after the heating is carried out the segregating unit that carbonated drink is separated; And with the isolated acid vapors introducing of segregating unit furfural production line, isolated waste water is then sent into evaporator and is carried out circulating and evaporating.
C, will get into superheated vapor in the evaporator and after heat exchange, carry out the water separator that steam and condensed leave; With the condensation device that steam-turbine plant relief opening exhaust steam (cold source energy) is carried out condensation, simultaneously said water separator is separated the condensed water that goes out with condensation with condensation device and send into water supply device.
Advantage of the present invention and beneficial effect:
1, because this system has adopted the internal circulating fluidized-bed boiler that returning charge wind is set as the steam production device; Utilize furfuraldehyde waste slag to be fuel; Add that system condensing water prepares high pressure, superheated steam, it has changed does not have to be the history of the fluidized bed boiler of fuel with the furfuraldehyde waste slag, not only to start soon independent, power consumption is few, operating cost is low; Realize energy-saving and emission-reduction; And,, thereby the conception of cogeneration of the present invention is come true for the hydrolysis of furfural production and the generating of Turbo-generator Set provide enough high pressure, superheated steam because the circulating combustion system that forms in the burner hearth significantly improves the thermal efficiency;
2, because the higher temperature steam that this system has adopted sucking condensing turbine to extract out carries out the heating evaporation processing to waste water under the tower; Make the moisture content of the acid vapors after carbonated drink is separated quite low; Produce furfural in the hydrolysis kettle with this acid vapors feeding furfural production line; The hydrolytic process that not only helps furfural effectively improves the yield rate of furfural.Meanwhile, the furfuraldehyde waste slag moisture content is obviously descended, the burning that acts as a fuel more fully and effectively improves the thermal efficiency.
3, owing to this system has adopted the isolated waste water of the segregating unit of acid gas and water separation is sent into the process that evaporator carries out the circulating and evaporating heat exchange again; Not only make waste water obtain abundant recycle; And can realize the zero-emission of waste water under the furfural production line tower; Thereby effectively avoid environmental pollution, bring benefit to the mankind.
4, because this system has adopted water separator is separated the process that the condensed water (being steam turbine steam condensate and the condensed water of extracting steam out) that goes out with condensation is sent into water supply device with condensation device; Make condensed water for the steam production device required water is provided, can make water resources obtain recycle again through water supply device.
5, because this system has adopted steam turbine to drive the electricity generating device that generator generates electricity; Can with generate electricity and be used for a large amount of electric energy and the household electricity that the furfural production process consumes; Obviously alleviate business electrical pressure, bring huge economic benefit and social benefit also for simultaneously these enterprises.
6, system of the present invention has demonstrated fully the cycling and reutilization of slag, water, heat, electric various energy resources; Be environmental protection, energy-conservation, reduce discharging, energy cyclic utilization system efficiently, have the technology simple effects significantly, structural design compact and reasonable, system operate steadily reliably, with hot electricity consumption regulate each other, advantage such as application prospect is quite wide, suitable industry is widelyd popularize.
Description of drawings: Fig. 1 is the process schematic representation of energy cyclic utilization system of the present invention.
Embodiment: the cogeneration energy cyclic utilization system of furfural production of the present invention be environmental protection, energy-conservation, reduce discharging, energy cyclic utilization system efficiently, it has demonstrated fully the cycling and reutilization of slag, water, heat, electric various energy resources.At first its waste residue of utilizing furfural production line 1 to produce is the preparation of fuel superheated vapor of furfuraldehyde waste slag as steam production device 3; This steam production device 3 is the internal circulating fluidized-bed boilers that are provided with returning charge wind; Boiler fluidizing velocity 3-4.2m/s; Steam output 15t/h, vapor pressure 2.5 (1.6) Mpa, 400 (320) ℃ of superheat steam temperatures.The superheated vapor of this steam production device 3 preparations is sent into sucking condensing turbine device 4, converts the heating power potential energy of superheated vapor into mechanical energy, through rotor machine 5 mechanical energy is converted to electric energy and is used for furfural production line 1 again., steam-turbine plant 4 vapor pressures are drawn out of when reducing to 0.9-1.2Mpa simultaneously; Get into evaporator 6 shell sides; The waste water that the heat that utilizes steam-turbine plant 4 to extract steam out is discharged furfural production line in the tube side 1 is that waste water heats under the tower; Send into after this part vapor condenses in the water separator 8 that steam and condensed leave, its condensed water is transported to water supply device 2 and for steam production device 3 water is provided.The waste water that furfural production line 1 is discharged is squeezed into the bottom of the segregating unit 7 of sour carbonated drink separation by water pump; Be heated to form the sour steam water interface of 0.8-1.0Mpa through the tube side of falling tube entering vaporizer 6; Get into the segregating unit 7 that sour carbonated drink separates from the top of vaporizer 6 and carry out carbonated drink separation, isolated acid gas is introduced in the hydrolysis kettle of furfural production line 1 through the fairlead at segregating unit 7 tops.Isolated waste water then carries out circulating and evaporating through falling tube Returning evaporimeter device 6.When steam-turbine plant 4 vapor pressures are reduced to 0.005-0.01Mpa, get in the condensation device 9 and be cooled into water, be extracted in the water supply device 2 feedwater by condensate pump again as steam production device 3.Rotor machine 5 generated energy can be regulated according to this business electrical situation and process steam amount, and the generated energy regulation range is 300-1000kwh per hour.
System of the present invention is used for a furfural mill of producing 3000 tons per year, calculated in 300 days by annual production, adopt the mode of cogeneration to produce furfural, annual power consumption is 216-288 ten thousand degree.Can save more than 150 ten thousand yuan of the electricity charge.About 60,000 tons can be economized on water every year, more than 10 ten thousand yuan of water rates can be saved.Every year, but fuel saving took more than 700 ten thousand yuan.But add up to more than 860 ten thousand yuan of cost savings.This shows that considerable benefit is worthy of popularization.
Claims (4)
1. the cogeneration energy cyclic utilization system that furfural is produced comprises furfural production line (1), and it is characterized in that: this system also comprises:
A, the furfuraldehyde waste slag that utilizes furfural production line (1) to produce are made fuel; With the steam production device (3) of feedwater preparation superheated vapor in the water supply device (2), the heating power potential energy of superheated vapor is converted into the steam-turbine plant (4) of mechanical energy and mechanical energy is converted to electric energy again and is used for the rotor machine (5) of furfural production line (1);
B, the superheated vapor that utilizes sucking condensing turbine to extract out heat waste water under the tower; Make its evaporator that forms acid steam water interface (6); Acid steam water interface after the heating is carried out the segregating unit (7) that carbonated drink is separated; And with the isolated acid vapors introducing of segregating unit (7) furfural production line (1), isolated waste water is then sent into evaporator (6) and is carried out circulating and evaporating;
C, will get into superheated vapor in the evaporator and after heat exchange, carry out the water separator (8) that steam and condensed leave; With the condensation device (9) that steam-turbine plant relief opening exhaust steam (cold source energy) is carried out condensation, simultaneously said water separator (8) is separated the condensed water that goes out with condensation with condensation device (9) and send into water supply device (2).
2. the cogeneration energy cyclic utilization system of producing according to the described furfural of claim 1; It is characterized in that: it is when pressure is 0.9-1.2Mpa, to extract out and entering evaporator (6) shell side that described steam-turbine plant (4) is extracted superheated vapor out, when pressure is reduced to 0.005-0.01Mpa, gets into condensation device (9).
3. the cogeneration energy cyclic utilization system of producing according to the described furfural of claim 1, it is characterized in that: described rotor machine (5) generated energy is 300-1000kwh.
4. the cogeneration energy cyclic utilization system of producing according to the described furfural of claim 1; It is characterized in that: described evaporator (6) is the acid steam water interface that waste water under the tower is heated to form 0.8-1.0Mpa in this device tube side, sends into segregating unit (7) again.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011100411151A CN102644490A (en) | 2011-02-21 | 2011-02-21 | Combined heat and power energy recycling system for furfural production |
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| CN2011100411151A CN102644490A (en) | 2011-02-21 | 2011-02-21 | Combined heat and power energy recycling system for furfural production |
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| CN102644490A true CN102644490A (en) | 2012-08-22 |
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| CN2011100411151A Pending CN102644490A (en) | 2011-02-21 | 2011-02-21 | Combined heat and power energy recycling system for furfural production |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109422523A (en) * | 2017-08-24 | 2019-03-05 | 大同煤矿集团朔州煤电宏力再生工业股份有限公司 | A kind of new process of low value heat recovery |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4357214A (en) * | 1980-02-08 | 1982-11-02 | Occidental Research Corporation | Use of geothermal heat to recover alcohol and other valuable products |
| CN2539059Y (en) * | 2002-04-22 | 2003-03-05 | 杨太敏 | Boiler using furfural residue as fuel |
| CN100352776C (en) * | 2006-06-07 | 2007-12-05 | 济南圣泉集团股份有限公司 | Method and system for treating furfural production waste water and method and system for furfural production |
| CN201321389Y (en) * | 2008-12-31 | 2009-10-07 | 山东万盛环保科技发展有限公司 | Sewage evaporation and utilization system under furfural production tower |
| CN101699207A (en) * | 2009-11-19 | 2010-04-28 | 河北理工大学 | Method for improving thermodynamic cycling quality of waste sinter heat power generation system |
-
2011
- 2011-02-21 CN CN2011100411151A patent/CN102644490A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4357214A (en) * | 1980-02-08 | 1982-11-02 | Occidental Research Corporation | Use of geothermal heat to recover alcohol and other valuable products |
| CN2539059Y (en) * | 2002-04-22 | 2003-03-05 | 杨太敏 | Boiler using furfural residue as fuel |
| CN100352776C (en) * | 2006-06-07 | 2007-12-05 | 济南圣泉集团股份有限公司 | Method and system for treating furfural production waste water and method and system for furfural production |
| CN201321389Y (en) * | 2008-12-31 | 2009-10-07 | 山东万盛环保科技发展有限公司 | Sewage evaporation and utilization system under furfural production tower |
| CN101699207A (en) * | 2009-11-19 | 2010-04-28 | 河北理工大学 | Method for improving thermodynamic cycling quality of waste sinter heat power generation system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109422523A (en) * | 2017-08-24 | 2019-03-05 | 大同煤矿集团朔州煤电宏力再生工业股份有限公司 | A kind of new process of low value heat recovery |
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Application publication date: 20120822 |