CN113025353B - Organic solid waste rapid heating device and heating method - Google Patents
Organic solid waste rapid heating device and heating method Download PDFInfo
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- CN113025353B CN113025353B CN202110233737.8A CN202110233737A CN113025353B CN 113025353 B CN113025353 B CN 113025353B CN 202110233737 A CN202110233737 A CN 202110233737A CN 113025353 B CN113025353 B CN 113025353B
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- pyrolysis
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B47/00—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B19/00—Heating of coke ovens by electrical means
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B1/00—Retorts
- C10B1/02—Stationary retorts
- C10B1/04—Vertical retorts
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/16—Features of high-temperature carbonising processes
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
A quick heating device for organic solid wastes mainly comprises an infrared heater, a heating furnace, a pyrolysis furnace and an automatic control unit. The pyrolysis furnace is embedded in the heating furnace, the outer wall of the pyrolysis furnace is coated with infrared wave absorption coating, the infrared heater is located on the outer side wall of the heating furnace, and the pyrolysis furnace is rapidly heated through heat radiation. According to the needs, infrared heater can set up a plurality ofly for the pyrolysis oven rises temperature fast. Cover the heat preservation on the pyrolysis oven inner wall, prevent calorific loss in the pyrolysis oven, maintain material temperature to realize the quick warm-up and the high-efficient heat preservation of material, shorten pyrolysis rise time, promote organic solid useless pyrolysis efficiency, effectively reduce the dioxin and produce.
Description
Technical Field
The invention belongs to the technical field of energy regeneration and recycling of organic solid wastes, and particularly relates to a device for quickly heating and efficiently preserving heat of organic solid wastes.
The invention also relates to a method for carrying out rapid heating by using the device.
Background
The organic solid waste yield of China is high, the annual output reaches 50 hundred million tons, but the reduction and the resource rate are low, and the urban living environment is seriously influenced. The pyrolysis technology can realize the reduction and resource utilization of organic solid wastes, and can convert biomass energy into resource product forms such as fuel gas, bio-oil, biochar and the like. With the construction of waste-free cities, organic solid waste pyrolysis technology is receiving more and more attention. At present, researches on pyrolysis technologies mainly focus on optimization of a pyrolysis system, standard emission of tail gas and the like, the existing organic solid waste pyrolysis technologies and equipment have the defects of long heating time, long starting time of pyrolysis equipment, low heat energy conversion efficiency and the like, and the heating speed is low, so that dioxin is generated in the pyrolysis process, the rear-end set cost is increased, and the popularization of the organic solid waste pyrolysis technologies is greatly limited. The rapid heating mode of the pyrolysis equipment is urgently needed to be designed, the heat energy conversion efficiency of the pyrolysis equipment is improved, and the generation of dioxin is effectively inhibited.
Disclosure of Invention
The invention aims to at least solve one of the technical problems in the prior art and provides a device for quickly heating organic solid wastes and efficiently preserving heat.
It is a further object of the present invention to provide a method for rapid heating using the above apparatus.
In order to achieve the purpose, the device for quickly heating and efficiently preserving heat of organic solid waste provided by the invention comprises: the device comprises an infrared heater, a heating furnace, a pyrolysis furnace and an automatic control unit.
The pyrolysis furnace is placed in the heating furnace, the infrared heater is positioned on the outer side wall of the heating furnace, the outer wall of the pyrolysis furnace is coated with infrared wave absorption coating, and the inner wall of the pyrolysis furnace is covered with a heat insulation layer.
The device, wherein, heating furnace and pyrolysis furnace shape are even, can be oval, circular, rectangle or other shapes, and the cylinder is preferred, guarantees to heat evenly.
The device, wherein, infrared heater evenly arranges in the reaction tube outer wall for heat the pyrolysis furnace, heating rate is 100 ℃/s. The infrared heaters can be arranged in plurality according to the requirement, and the infrared wavelengths emitted by the infrared heaters are different.
In the device, the outer wall of the pyrolysis furnace is uniformly coated with the wave-absorbing coating, and the inner wall is covered with the heat-insulating layer.
In the device, the wave-absorbing coating is semiconductor titanium oxide, and the thermal insulation layer on the inner wall of the pyrolysis furnace is made of ceramic fiber.
The device, wherein, the pyrolysis furnace material is high temperature resistant, the material that specific heat capacity is little such as carborundum.
The invention provides a method for rapidly heating by using the device, which comprises the following steps:
according to the type and the feeding amount of the organic solid waste, the pyrolysis furnace is quickly heated, the pyrolysis temperature of the pyrolysis furnace is maintained, and the high-efficiency pyrolysis of the organic solid waste is realized.
According to the method, the heating rate of the pyrolysis heating device is controlled by the automatic control unit, the automatic control unit automatically controls the heating rate according to the feeding amount of the material and the pyrolysis temperature, and when the device is started, the temperature of the pyrolysis furnace can be increased to 1000 ℃ within 1 minute, so that the starting time of the device is greatly shortened. When the temperature is higher than 1000 ℃, the infrared heater is closed, and the pyrolysis temperature in the pyrolysis furnace is maintained by the heat insulation layer. When the pyrolysis temperature in the pyrolysis furnace is lower than 900 ℃, the infrared heater is turned on again, and the rapid temperature rise of the pyrolysis furnace is realized.
Based on the technical scheme, the invention has the following beneficial effects:
aiming at the defects of long starting time, low heat energy conversion efficiency and the like of the organic solid waste pyrolysis technology and equipment, dioxin is generated in the pyrolysis process, the rear end setting cost is increased, and a device for quickly heating and efficiently preserving heat of organic solid waste is designed. The rapid heating of pyrolysis oven heaies up through heating furnace infrared heater thermal radiation realization, and the pyrolysis oven prevents calorific loss through heat preservation on the inner wall, maintains material pyrolysis temperature to realize the quick warm-up and the high-efficient heat preservation of material, shorten pyrolysis intensification time, promote organic solid useless pyrolysis efficiency, effectively reduce the dioxin and produce.
Drawings
FIG. 1 is a schematic structural diagram of the components of the organic solid waste rapid heating device of the present invention.
Description of the figures
1 feed inlet, 2 pyrolysis furnaces, 3 heat preservation layers, 4 coatings, 5 heating furnaces, 6 discharge ports and 7 infrared heaters.
Detailed Description
In order that the objects, technical solutions and advantages of the present invention will become more apparent, the present invention will be further described in detail with reference to the accompanying drawings in conjunction with the following specific embodiments.
An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of an apparatus for rapidly heating and efficiently preserving heat of organic solid waste according to an embodiment of the present invention. The apparatus of the present invention comprises: an infrared heater 7, a heating furnace 5, a pyrolysis furnace 2 and an automatic control unit.
Specifically, in the device, a pyrolysis furnace 2 is embedded in a heating furnace 5, a feed inlet 1 and a discharge outlet 6 are respectively arranged at two ends of the pyrolysis furnace 2, an infrared heater 7 is positioned on the outer side wall of the heating furnace 5, infrared wave-absorbing paint 4 is smeared on the outer wall of the pyrolysis furnace 2, and a heat-insulating layer 3 is covered on the inner wall.
The number of infrared heaters in a particular embodiment may be one or more, preferably three.
The pyrolysis furnace and the heating furnace can be oval, round, rectangular or other uniform shapes, wherein the shapes are preferably round, and a temperature probe is arranged on the inner wall.
The wave-absorbing coating on the outer wall of the pyrolysis furnace is semiconductor titanium oxide, and the insulating layer on the inner wall is made of ceramic fiber.
Wherein, the pyrolysis furnace is made of materials with high temperature resistance and small specific heat capacity, such as silicon carbide and the like.
Wherein the pyrolysis furnace is nested in the heating furnace, and the capacity of the pyrolysis furnace for treating the solid waste is 0.1-2 tons/day. The number of infrared heaters to be operated is selected according to the process requirements. And opening the infrared heater to heat the pyrolysis furnace, raising the temperature of the pyrolysis furnace to 1000 ℃ in 10s under the action of the infrared wave-absorbing material on the outer wall of the pyrolysis furnace, opening the feed inlet at the moment, and quickly pyrolyzing the solid waste in the pyrolysis furnace, so that the temperature rise process is shortened, and the generation of dioxin is reduced. The pyrolysis furnace maintains the pyrolysis temperature of above 900 ℃ under the action of the heat preservation layer, and the solid waste after pyrolysis is discharged from the discharge hole.
Wherein, the pyrolysis furnace is controlled by an automatic control unit, the automatic control unit is connected with a temperature probe of the pyrolysis furnace (known technology), and the service time of the infrared heater is controlled by analyzing the temperature in the furnace. In the control process, when the temperature in the pyrolysis furnace is lower than 850 ℃, the infrared heater is turned on for heating, and when the temperature is higher than 1000 ℃, the infrared heater is turned off, and the temperature in the pyrolysis furnace is maintained to be continuously higher than 850 ℃.
Through detection, the outlet temperature of the dioxin is lower than 0.05ngTEQ/Nm3Reaches the discharge standard of refuse incineration pollutants of European Union (DIRECTIVE 2010), and has dioxin content of 1.0ngTEQ/Nm compared with the traditional domestic organic solid waste pyrolysis incineration device3The concentration of dioxin treated by the device disclosed by the invention is reduced by more than 95%.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. An apparatus for rapid heating of organic solid waste, comprising: the system comprises an infrared heater, a heating furnace, a pyrolysis furnace and an automatic control unit;
the pyrolysis furnace is embedded in the heating furnace, the infrared heater is positioned on the outer side wall of the heating furnace, the outer wall of the pyrolysis furnace is coated with infrared wave absorption coating, and the inner wall of the pyrolysis furnace is covered with a heat insulation layer.
2. The apparatus of claim 1, wherein the furnace and the pyrolysis furnace are uniform in shape, and have an oval, circular, rectangular or other shape to ensure uniform heating.
3. The apparatus of claim 1, wherein the infrared heaters are uniformly arranged on the outer wall of the reaction tube, and a plurality of infrared heaters are provided according to the requirement, and the infrared wavelengths emitted by the infrared heaters are all different.
4. The device of claim 1, wherein the wave-absorbing coating is semiconductor titanium oxide, and the thermal insulation layer on the inner wall of the pyrolysis furnace is made of ceramic fiber.
5. The apparatus of claim 1, wherein the pyrolysis furnace is made of silicon carbide.
6. A rapid heating method using the apparatus of any one of claims 1 to 5, comprising the steps of:
this pyrolysis rising temperature device's rate of temperature rise is controlled by automated control unit, and automated control unit carries out automatic control according to the feeding volume and the pyrolysis temperature of material, opens infrared heater when pyrolysis temperature is less than preset temperature in the pyrolysis oven, realizes the rapid heating up of pyrolysis oven, closes infrared heater when the temperature is higher than preset temperature, relies on the heat preservation to maintain pyrolysis temperature in the pyrolysis oven.
7. The rapid heating method according to claim 6, wherein the infrared heater is turned on when the pyrolysis temperature in the pyrolysis furnace is lower than 900 ℃ and is turned off when the temperature is higher than 1000 ℃.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110233737.8A CN113025353B (en) | 2021-03-03 | 2021-03-03 | Organic solid waste rapid heating device and heating method |
| EP22160004.2A EP4060008B1 (en) | 2021-03-03 | 2022-03-03 | Rapid heating device and heating method for organic solid waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110233737.8A CN113025353B (en) | 2021-03-03 | 2021-03-03 | Organic solid waste rapid heating device and heating method |
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| Publication Number | Publication Date |
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| CN113025353A CN113025353A (en) | 2021-06-25 |
| CN113025353B true CN113025353B (en) | 2021-09-28 |
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| CN202110233737.8A Active CN113025353B (en) | 2021-03-03 | 2021-03-03 | Organic solid waste rapid heating device and heating method |
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| CN (1) | CN113025353B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4584947A (en) * | 1985-07-01 | 1986-04-29 | Chittick Donald E | Fuel gas-producing pyrolysis reactors |
| JP2002129165A (en) * | 2000-10-25 | 2002-05-09 | Yamamoto Kiyokazu | Carbonization apparatus for waste |
| KR100443155B1 (en) * | 2001-10-19 | 2004-08-09 | 주식회사 지화이브 | A carbonizing treating appartus for waste matter |
| US20120073197A1 (en) * | 2010-09-27 | 2012-03-29 | General Electric Company | System and method for operating a gasifier |
| CN104031665A (en) * | 2014-06-23 | 2014-09-10 | 北京建筑材料科学研究总院有限公司 | Directional pyrolysis method of combustible wastes |
| TWI748622B (en) * | 2020-08-28 | 2021-12-01 | 李輝雄 | Organic matter degradation method |
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- 2021-03-03 CN CN202110233737.8A patent/CN113025353B/en active Active
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| Publication number | Publication date |
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| EP4060008B1 (en) | 2024-05-08 |
| EP4060008A1 (en) | 2022-09-21 |
| CN113025353A (en) | 2021-06-25 |
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