CN102139166A - Method for drying carbide slag slurry - Google Patents
Method for drying carbide slag slurry Download PDFInfo
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- CN102139166A CN102139166A CN2010105771089A CN201010577108A CN102139166A CN 102139166 A CN102139166 A CN 102139166A CN 2010105771089 A CN2010105771089 A CN 2010105771089A CN 201010577108 A CN201010577108 A CN 201010577108A CN 102139166 A CN102139166 A CN 102139166A
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/20—Solar thermal
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/20—Climate change mitigation technologies for sector-wide applications using renewable energy
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Abstract
The invention discloses a method for drying carbide slag slurry, and belongs to the technical field of chemical byproduct and waste processing. The carbide slag with humidity of 30 to 50 percent is dried by effectively adopting a hot water system combining solar energy and an air heat source pump and combining a hydrothermal heat supply technology in a floor heater. When the outdoor sunlight is sufficient, the circulating water in the floor heater is heated by using the solar energy; when a certain amount of solar energy can be absorbed outdoors in cloudy days, heat is supplied to the floor heater by using the air heat source pump and the solar energy; and when the heat of the solar energy cannot be absorbed, heat is supplied to the floor heater by using the air heat source pump. When the carbide slag slurry is dried by the floor heater, the material is turned by using a stirring chain, and drying is accelerated by using a moisture discharge device till the moisture content of the carbide slag is not more than 5 percent. By the method, low running expense, low pollution, low energy consumption and continuous drying effect can be achieved. The dried carbide slag can be widely applied in the industries of buildings, chemicals, metallurgy, agriculture and the like.
Description
Technical field
The present invention relates to the drying means of carbide slag slurries, belong to chemical industry accessory substance and leftover bits and pieces processing technique field.
Background technology
Carbide slag slurries is the taupe troubled liquor.After leaving standstill, be divided into three parts, clarified solution, deposition of solid layer and mesocolloid transition zone.Solid deposits promptly is the calcium carbide waste slag that we often say.Mainly contain Ca (OH) in the dried calcium carbide waste slag
2, can make the substitute of calcium hydroxide, extensively be used in industries such as building, chemical industry, metallurgy, agricultural.But when calcium carbide waste slag water content＞50%, its form is thick pulpous state, stores, the transportation difficulty, makes troubles to the user.A lot of factories also bring the deuce to pay because of it pollutes the road surface in transit.Therefore, the key of calcium carbide waste slag comprehensive utilization is the control water content.Effectively utilize calcium carbide waste slag, not only can bring good economic benefit, environmental benefit and social benefit, and can realize turning waste into wealth.
Solar water heater is converted into heat energy to solar energy, and water from the low-temperature heat to high temperature, is used to satisfy the hot water of people in life, production.Solar water heater is made up of heat collector, hot water storage tank, support and related accessories, solar energy is converted to heat energy mainly rely on heat collector.Heat collector sunny slope temperature height, the opaco temperature is low, and water just produces temperature difference reaction in the pipe, the principle of utilizing hot water come-up cold water to sink makes the water generates circulation and reaches required hot water.The sharpest edges of solar thermal collection system are, under the sunshine sufficiency, whole system operating cost is almost nil, this also be in the relatively abundanter area of solar energy with solar energy as the major reason of producing the hot water main energy sources.Its shortcoming is, can place heat collector area when weather condition unfavorable (as situations such as illumination deficiency, nights) or roofing has in limited time, can only rely on auxiliary thermal source to heat.
Air source heat pump claims Teat pump boiler again, with contrary Carnot's principle,, absorb a large amount of low temperature heat energy in the air with few electric energy, compression by compressor becomes high temperature heat, transfer to water tank, heat hot water is so its energy consumption is low, efficient is high, speed is fast, security is good, the feature of environmental protection is strong, hot-water supply endlessly, energy-saving efficiency is more than 4 times of electric heater, and is also more energy-conservation than solar water heater, is the most advanced in the world at present energy-saving environment-friendly hot water system.The manufacturing of air-source heat pump hot water group, popularization and use are nearest 10 years thing in China, but owing to its relatively tradition produce hot water facility energy-efficient, environmental protection, safety, intelligent control, do not take advantage such as permanent construction space and caused the wide day by day concern in market.The heat-pump hot-water unit be the energy with cleaning regenerative raw materials (air and), neither uses also not produce harmful gas, and the while has also reduced greenhouse effects and atmosphere pollution.At present, under the prerequisite of China's electric power resource shortage, adopt the heat-pump hot-water unit to produce hot water, can obtain maximum heat supply benefit with the electric power input of minimum.The top layer or the outdoor platform that the heat-pump hot-water unit are placed on building get final product work.Realized really that on device structure water, electricity separate, and guarantee user's safety.The air-source heat pump hot water group is compared with solar thermal collection system, and sharpest edges are as long as (10 ℃～50 ℃) just can round-the-clock direct-furnish hot water in the unit operation scope for outdoor environment temperature.
The flooring radiation heat supply is a kind of system that utilizes interior of building ground to carry out heat supply, this system with whole or part ground as radiating surface, its floor radiating surface mainly with photothermal form (account for total amount of heat 61.25%) to indoor heat radiation.The low temperature floor radiation heat supply is as a kind of heating form, have energy-efficient (comparing energy-conservation reaching more than 50% with the common radiator heating system), operating cost is low, comfort and health, long service life can be utilized advantages such as thermal source is many, the effective usable floor area of saving building.
Summary of the invention
The drying means that the purpose of this invention is to provide carbide slag slurries.With the effective energy savings of the dry carbide slag slurries of this method, reduce the operating cost expense, reduce environmental pollution, simple to operate, operational system safety, the carbide slag that obtains humidity at end is even.Products obtained therefrom can be used for industries such as building, chemical industry, metallurgy, agricultural, but for example the carbide slag replacing lime is made of stonesly made cement, can be produced quick lime, as carbide raw material, can produce expoxy propane etc.
The present invention relates to the drying means of carbide slag slurries, the hot-water heating system that it adopts solar energy and air heat source pump to combine, and the hydro-thermal heat supply process in the associating ground radiation heating (floor heating) is that 30%～50% carbide slag slurries carries out drying to humidity in the material pond.
The drying means of carbide slag slurries, its key step is:
(1) be that 30%～50% carbide slag slurries is poured in the material pond with moisture;
When (2) solar water heater moved, the solar thermal collector absorbed radiation energy was converted to heat energy, the cold water of heating solar hot water storage tank, and water temperature imports heat storage water tank after reaching 65 ℃;
(3) during the air heat source pump operation,, be converted into high temperature heat, directly heat the water in the heat storage water tank through the pump inner compressor by absorbing airborne low temperature heat energy;
(4) after the water temperature in the heat storage water tank reaches more than 65 ℃, hot water imports in the floor heating heating coil pipe by water knockout drum, reach the moisture of evaporation carbide slag slurries in the material pond with this temperature that produces, stir raw material with stirring chain in the time of heating evaporation, to increase rate of drying, the moisture of finished product requires to be not more than 5%;
When (5) water temperature in the floor heating heating coil pipe was lower than 50 ℃, hot water was back in solar water heater and the air heat source pump by water collector, reheats;
(6) moisture that evaporates is discharged with exhaust blower by after the sack cleaner dedusting.
Technical essential provided by the invention is:
(1), when promptly the water temperature of solar heat-preservation water tank can reach the requirement temperature, only heats recirculated water in the floor heating with solar energy when outdoor daylight abundance;
(2), when promptly the water temperature of solar heat-preservation water tank is lower than the requirement temperature, utilize the air source heat pump assisted solar to give the floor heating heat supply when the outdoor cloudy day but can absorb a certain amount of solar energy;
(3) when running into low excessively situation of solar absorption heat and night, then give the floor heating heat supply with air source heat pump.
Beneficial effect of the present invention and advantage are: solar thermal collection system and air heat source pump assembly are effectively combined, maximize favourable factors and minimize unfavourable ones, given full play to advantage separately, and be the dry carbide slag slurries of media with the floor heating, realized the continuable drying effect of economizing type of low operating cost, low pollution, low energy expenditure, security of operation.
Description of drawings
Accompanying drawing is the drying means schematic diagram of carbide slag slurries of the present invention.
Referring to accompanying drawing, 1, material pond 2, exhaust blower 3, sack cleaner 4, heating coil pipe 5, water knockout drum 6, water collector 7, heat storage water tank 8, solar heat-preservation water tank 9-10, circulating pump 11, air heat source pump 12, solar thermal collector 13, feed pipe 14-17, temperature display controller 18, check valve
The specific embodiment
Example one
Referring to accompanying drawing, carbide slag slurries is put into material pond 1, divide following situation to carry out drying then.
When outdoor daylight is sufficient, only with solar energy supply floor heating hot water.At first solar thermal collector 12 absorbs solar energy and is converted to heat energy, and with this hot water that comes heated feed water pipe 13 to flow into, the heating back flows into solar heat-preservation water tank 8.After water temperature reached 65 ℃, Open valve flowed into water knockout drum 5, then flows into two groups of heating coil pipes 4 respectively.When the water temperature in the heating coil pipe 4 was lower than 50 ℃, water was back in the feed pipe again by water collector 6 and water circulating pump 9 and reheats, and flowed into standby hot water in the coil pipe 4.When the water temperature of hot water storage tank does not reach when requiring temperature, but Open valve and carry out backheat through water circulating pump 10.
When outdoor daylight is strong inadequately, supply floor heating hot water jointly with solar energy and air heat source pump.At first solar thermal collector 12 absorbs solar energy and is converted to heat energy, comes the water of heating solar hot water storage tank 8 with this.When water temperature did not reach 65 ℃, Open valve allowed water in the hot water storage tank flow into air heat source pump 11 and heats, and then flows into heat storage water tank 7, flows into two groups of heating coil pipes 4 respectively through water knockout drum 5.When the water temperature of heat storage water tank 7 is lower than the requirement temperature, can carry out backheat through water circulating pump 9.Equally, when the water temperature in the heating coil pipe 4 was lower than 50 ℃, water was back in the feed pipe again by water collector 6 and water circulating pump 9 and reheats, and flowed into standby hot water in the coil pipe 4.When the water temperature of hot water storage tank does not reach when requiring temperature, but Open valve and carry out backheat through water circulating pump 10.
Carbide slag slurries stir with the stirring chain in the material pond, and the moisture that evaporation comes up drains into the open air through the filtration of sack cleaner 3 by exhaust blower 2 when absorption floor heating heat carries out drying.
Example two
Referring to accompanying drawing, carbide slag slurries is put into material pond 1.When low excessively situation of outdoor solar absorption heat and night, only with air heat source pump supply floor heating hot water.Allow the water of feed pipe flow directly into 11 heating of air heat source pump, then flow into heat storage water tank 7, flow into two groups of heating coil pipes 4 respectively through water knockout drum 5 through path.Same when the water temperature of heat storage water tank 7 is lower than the requirement temperature, can carry out backheat through water circulating pump 9.When the water temperature in the heating coil pipe 4 was lower than 50 ℃, water was back in the feed pipe again by water collector 6 and water circulating pump 9 and reheats, and flowed into standby hot water in the coil pipe 4.
Carbide slag slurries stir with the stirring chain in the material pond, and the moisture that evaporation comes up drains into the open air through the filtration of sack cleaner 3 by exhaust blower 2 when absorption floor heating heat carries out drying.
Claims (7)
1. the drying means of carbide slag slurries, it is characterized in that: the hot-water heating system that adopts solar energy and air heat source pump to combine, and the hydro-thermal heat supply process in the associating ground radiation heating (floor heating) is that 30%～50% carbide slag slurries carries out drying to humidity in the material pond.When outdoor daylight abundance, when promptly the water temperature of solar heat-preservation water tank can reach the requirement temperature, only heat recirculated water in the floor heating with solar energy; When the outdoor cloudy day but can absorb a certain amount of solar energy, when the water temperature of solar heat-preservation water tank is lower than the requirement temperature, utilize the air source heat pump assisted solar to give the floor heating heat supply; When running into low excessively situation of solar absorption heat and night, then utilize air source heat pump to give the floor heating heat supply.During air source heat pump work, be to give the floor heating heat supply by the water of heating heat storage water tank.When the water temperature in the floor heating heating coil pipe was lower than the requirement temperature, the water heating that will reflux realized the circulation heating with this.In the time of floor heating heated drying carbide slag slurries, the stirring chain is installed in the material pond is stirred material, and utilize humidity-discharging device that moisture in the drying chamber is discharged, quicken the drying of carbide slag slurries, carbide slag final moisture content is not more than 5%.
2. the furnace drying method of carbide slag slurries as claimed in claim 1 is characterized in that: described drying means is to adopt solar energy and air heat source pump to combine, and the hydro-thermal heat supply drying means in the associating ground radiation heating (floor heating).
3. the furnace drying method of carbide slag slurries as claimed in claim 1, it is characterized in that: described drying means is that the water temperature of solar heat-preservation water tank is can reach the requirement temperature time, only heat recirculated water in the floor heating with solar energy, if the water temperature of solar heat-preservation water tank does not reach when requiring temperature, adopt the air source heat pump assisted solar to give the floor heating heat supply dry carbide slag slurries.
4. the furnace drying method of carbide slag slurries as claimed in claim 1 is characterized in that: described drying means is to install to stir chain and stir material in the carbide slag stock tank, and in its hothouse humidity-discharging device is installed, and quickens the drying of carbide slag slurries.
5. the furnace drying method of carbide slag slurries as claimed in claim 1, it is characterized in that: the water temperature of described heat storage water tank is controlled at more than 65 ℃.
6. the furnace drying method of carbide slag slurries as claimed in claim 1 is characterized in that: described solar heat-preservation water tank is installed temperature indicator and temperature controller, controls the switching of air source heat pump with this.
7. the furnace drying method of carbide slag slurries as claimed in claim 1, it is characterized in that: described floor heating heating coil pipe water temperature is controlled at 50 ℃～100 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105771089A CN102139166A (en) | 2010-12-07 | 2010-12-07 | Method for drying carbide slag slurry |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105771089A CN102139166A (en) | 2010-12-07 | 2010-12-07 | Method for drying carbide slag slurry |
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| CN102139166A true CN102139166A (en) | 2011-08-03 |
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| CN2010105771089A Pending CN102139166A (en) | 2010-12-07 | 2010-12-07 | Method for drying carbide slag slurry |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132386A (en) * | 2014-07-24 | 2014-11-05 | 康特能源科技(苏州)有限公司 | Air source heat pump floor heating system |
| CN112916594A (en) * | 2021-05-10 | 2021-06-08 | 中国科学院过程工程研究所 | Anti-condensation method in dry-method carbide slag recycling process |
| CN113251748A (en) * | 2021-05-18 | 2021-08-13 | 山东大学 | Solar heat collection, storage and drying system for biomass power plant fuel |
| CN113720109A (en) * | 2021-08-09 | 2021-11-30 | 刘茂利 | Method for drying carbide slag by using calcium oxide |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1923700A (en) * | 2006-09-15 | 2007-03-07 | 游川北 | Method of producing calcium chloride from industrial waste carbide slag |
| CN201488480U (en) * | 2009-08-28 | 2010-05-26 | 新疆农业科学院农业机械化研究所 | Drying device combined solar and air source heat pump |
-
2010
- 2010-12-07 CN CN2010105771089A patent/CN102139166A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1923700A (en) * | 2006-09-15 | 2007-03-07 | 游川北 | Method of producing calcium chloride from industrial waste carbide slag |
| CN201488480U (en) * | 2009-08-28 | 2010-05-26 | 新疆农业科学院农业机械化研究所 | Drying device combined solar and air source heat pump |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132386A (en) * | 2014-07-24 | 2014-11-05 | 康特能源科技(苏州)有限公司 | Air source heat pump floor heating system |
| CN112916594A (en) * | 2021-05-10 | 2021-06-08 | 中国科学院过程工程研究所 | Anti-condensation method in dry-method carbide slag recycling process |
| CN113251748A (en) * | 2021-05-18 | 2021-08-13 | 山东大学 | Solar heat collection, storage and drying system for biomass power plant fuel |
| CN113720109A (en) * | 2021-08-09 | 2021-11-30 | 刘茂利 | Method for drying carbide slag by using calcium oxide |
| CN113720109B (en) * | 2021-08-09 | 2022-09-02 | 刘茂利 | Method for drying carbide slag by using calcium oxide |
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Application publication date: 20110803 |