CN101639222A - Method for innocent treatment and resource utilization of wastes - Google Patents
Method for innocent treatment and resource utilization of wastes Download PDFInfo
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- CN101639222A CN101639222A CN200810041067A CN200810041067A CN101639222A CN 101639222 A CN101639222 A CN 101639222A CN 200810041067 A CN200810041067 A CN 200810041067A CN 200810041067 A CN200810041067 A CN 200810041067A CN 101639222 A CN101639222 A CN 101639222A
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Abstract
The invention provides a method for innocent treatment and resource utilization of wastes, in particular a process and a method for pyrolyzing and burning any type of the wastes including industrial hazardous wastes, medical wastes, urban domestic wastes, urban domestic sludge, bio-straws and the like. The method adopts a high-temperature flue gas pyrolysis rotary kiln technique, a high-temperature flue gas and pyrolysis flue gas cycle burning technique, and a molding burning technique. The method has the advantages of wide adaptable range, strong processing ability, safety, reliability, low running cost, and advanced various economic technique and environmental protection indexes.
Description
Technical field
The present invention relates to a kind of processing method that refuses such as industrial dangerous waste, clinical waste, domestic waste, municipal sludge and biological straw carry out pyrolysis and burning, method of especially a kind of refuse harmless treatment and recycling of being used for.
Background technology
At present state, inside and outside be applied in the burning disposal and application technology as the second resource of arbitrary class refuses such as industrial dangerous waste, clinical waste, domestic waste, municipal sludge and biological straw, mostly adopt the technology such as fluidized bed incinerator, stoker fired grate formula incinerator, rotary kiln type incinerator, incinerator for thermal decomposition of above-mentioned refuse being carried out direct burning disposal.Above-mentioned incineration technology ubiquity investment is high, operating cost is high, control problems such as difficulty is big.
Summary of the invention
Technical problem solved by the invention is the defective that overcomes prior art, a kind of wide accommodation is provided, disposal ability is strong, safe and reliable, operating cost is low, every economic technology and environmental protection index advanced person, be used for arbitrary class refuses such as industrial dangerous waste, clinical waste, domestic waste, municipal sludge and biological straw are carried out the refuse harmless treatment of pyrolysis and burning and the method for recycling, can carry out the pyrolysis of appropriateness according to the difference of refuse.Wherein said waste pyrolysis and incineration treatment method mainly comprise following technology contents and step:
Step and technology contents 1: adopt the technology of high-temperature flue gas pyrolysis rotary kiln, relevant high-temperature flue gas pyrolysis rotary kiln technology to the effect that among the present invention: sent in succession in the feed end of rotary kiln by the requirement of required pyrolysis processing amount by the refuse that the hydraulic pressure material-pulling device will enter in the storage bin(hopper); The refuse of going into behind the kiln moves to the rotary kiln discharge end under effect with conditions such as angle of declinations is stirred in revolution uniformly.Part by the high-temperature flue gas that incinerator produced enters in the discharge end of rotary kiln by the high-temperature flue gas pipeline under the effect of rotary kiln negative pressure, and the flow direction of high-temperature flue gas in kiln is opposite with the direction of motion of refuse.Refuse in the rotary kiln carries out pyrolysis under the effect of high-temperature flue gas, its pyrolysis gas confuses flue gas and flows to the feed end of rotary kiln, sends in the calandria pyrolysis smoke sub-cylinder of incinerator by the pyrolysis smoke pipeline under the effect of pyrolysis smoke blower fan and goes into the stove burning disposal.Decorating film matter behind the waste pyrolysis is sent outside the kiln by sealing cooling output device.High-temperature flue gas pyrolysis rotary kiln should adopt heat proof material, and takes measures such as corrosion-resistant thermal insulation sealing.The rotating speed that is provided with temperature sensor, pressure sensor, rotary kiln in the rotary kiln is adjustable.
Step and technology contents 2: adopt high-temperature flue gas and pyrolysis smoke circulation incineration technology, relevant high-temperature flue gas and pyrolysis smoke circulation incineration technology are to the effect that among the present invention: the high-temperature flue gas that is taken from the incinerator dual firing chamber is sent in the discharge end of high-temperature flue gas pyrolysis rotary kiln by the high-temperature flue gas pipeline under the effect of rotary kiln negative pressure.The high-temperature flue gas of going into kiln when the rotary kiln feed end flows to kiln in refuse carry out pyrolysis, its pyrolysis gas confuses behind the feed end of flue gas flow direction rotary kiln under the effect of pyrolysis smoke blower fan to send in the calandria pyrolysis smoke sub-cylinder of incinerator by the pyrolysis smoke pipeline goes into the stove burning disposal.Regulate and control high-temperature flue gas pyrolysis rotary kiln temperature and pressure by the rotating speed of transferring the pyrolysis smoke blower fan, and then realize the purpose of control waste pyrolysis treating capacity.Because the not direct incinerating waste material of this incinerator, but incinerating combustion value is higher and uniform shaped fuel.An elegance hot blast of its stove, the heat-insulating combustion chamber is all adopted in the part of dual firing chamber in a combustion chamber, therefore can guarantee the stable operation of this stove.The pyrolysis smoke of going into stove by calandria pyrolysis smoke sub-cylinder in the burning disposal process through whole high temperature section of a combustion chamber and dual firing chamber, because of its at high-temperature region time of staying long enough, can guarantee the abundant decomposition of harmful substance.For guaranteeing the abundant after-flame of combustible volatile, this stove has been arranged high-voltage secondary wind.This stove also is provided with auxiliary facilities such as start-up burner, waste heat boiler, air preheater, fire grate device, temperature sensor, pressure sensor.High-temperature flue gas pipeline and pyrolysis smoke pipeline all should adopt corresponding heat proof material and take the corrosion-resistant thermal insulation measure.
Step and technology contents 3: adopt shaping fuel technology, relevant shaping fuel technology to the effect that among the present invention: the decorating film matter behind the waste pyrolysis through magnetic separation, is picked up choosing by sealing cooling output device, is squeezed into shaped fuel after the processes such as screening.Wherein the sealing function of sealing cooling output device is isolated with oxygen, material takes place before preventing to lower the temperature fire burns; Effect after the cooling is to end pyrolysis, and for follow-up magnetic separation, pick up technical process such as choosing, screening suitable processing temperature environmental condition be provided; Magnetic separation and the effect of picking up choosing are material recycles and remove inorganic matter, thus improve shaped fuel than part calorific value, the effect of screening is a molding effect of guaranteeing fuel.For compensating special regional refuse calorific value deficiency, guarantee the heat capacity of incinerator, also can when the processing shaped fuel, allocate a certain proportion of exotic fuels into.
Because adopt above-mentioned technical scheme, the present invention has following beneficial effect:
Can adapt to all kinds of different wastes processing, can be at different condition and different regions set handling equipment, treatment scale can be greatly, can be little; Form technology maturation reliable, be convenient to control; Can realize advanced economic technology and environmental protection index.
Description of drawings
Fig. 1 is the system process schematic diagram that hazardous waste of the present invention is handled;
Fig. 2 is the system process schematic diagram of urban garbage disposal of the present invention;
Fig. 3 is the system process schematic diagram that municipal sludge of the present invention is handled;
Fig. 4 is the system process schematic diagram that biological straw of the present invention is handled;
Fig. 5 is the front view of high-temperature flue gas pyrolysis rotary kiln of the present invention;
Fig. 6 is the vertical view of high-temperature flue gas pyrolysis rotary kiln of the present invention;
Fig. 7 is the front view of incinerator of the present invention;
Fig. 8 is the vertical view of incinerator of the present invention.
Indicate 1-hydraulic pressure material-pulling device, 2-storage bin hopper, 3-pyrolysis smoke pipeline, 4-pyrolysis blower fan, 5-rotary kiln, 6-idler pulley, 7-transmission device, 8-thermal insulation layer, 9-sealing cooling output device, 10-high-temperature flue gas pipeline, 12-waste heat boiler, 13-pyrolysis smoke pipeline interface, 14-incinerator, 15-dual firing chamber, 16-secondary wind, 17-one combustion chamber, 18-fire grate device, wind of 19-, 20-air preheater, 21-calandria pyrolysis smoke sub-cylinder, 22-burner in conjunction with the accompanying drawings
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment is illustrated:
To shown in Figure 8, the concrete technology contents of method and the method for a kind of refuse harmless treatment of the present invention and recycling are as follows as Fig. 1:
The present invention adopts the processing method of pyrolysis and burning for relevant refuse.It is to the effect that: sent in succession in the feed end of rotary kiln 5 by the requirement of required pyrolysis processing amount by the refuse that hydraulic pressure material-pulling device 1 will enter in the storage bin(hopper) 2, go into behind the kiln refuse revolution stir with conditionings such as angle of declination under, discharge end to rotary kiln 5 moves uniformly, burn the part of the high-temperature flue gas that is produced by incinerator 14, take out at the upper end of its dual firing chamber 15 high-temperature flue gas interface 13 places, enter in the discharge end of rotary kiln 5 by high-temperature flue gas pipeline 10 under the effect of rotary kiln 5 negative pressure, the flow direction of high-temperature flue gas in kiln is opposite with the direction of motion of refuse.Refuse in the rotary kiln 5 decomposes under the high-temperature flue gas effect, its pyrolysis gas confuses flue gas and flows to the feed end of rotary kiln 5, and under the effect of pyrolysis smoke blower fan 4 by pyrolysis smoke pipeline 3, pyrolysis smoke pipeline before and after the pyrolysis smoke blower fan is 3, sends in the calandria pyrolysis smoke sub-cylinder 21 of incinerator 14 and goes into the stove burning disposal.Regulate and control required temperature and pressure in the high-temperature flue gas pyrolysis rotary kiln 5 by the rotating speed of adjusting pyrolysis smoke blower fan 4, and then realize the purpose of control waste pyrolysis treating capacity.Decorating film matter behind the waste pyrolysis is squeezed into shaped fuel after sealing cooling output device 9 and magnetic separation, picking up processes such as choosing, screening.Wherein the sealing function of sealing cooling output device is to allow pyrolysis material and oxygen completely cut off, and material takes place before preventing to lower the temperature fire burns.Effect after the cooling be end pyrolysis and for follow-up magnetic separation, pick up technical process such as choosing, screening suitable processing temperature environmental condition be provided.Magnetic separation and the effect of picking up choosing are that goods and materials are recycled and removed inorganic matter, thus improve shaped fuel than part calorific value.The effect of screening is a molding effect of guaranteeing fuel.Be the regional especially refuse calorific value deficiency of compensation, guarantee the heat capacity of incinerator 14, also can when the processing shaped fuel, allocate a certain proportion of exotic fuels into.Because the not direct incinerating waste material of incinerator 14, but incinerating combustion value is higher and uniform shaped fuel, and its wind 19 is the hot blasts that provide by air preheater 20, the part of the whole and dual firing chamber 15 of one combustion chamber 17 is taked the heat-insulating combustion chamber, therefore can guarantee the stable operation of incinerator 14.The pyrolysis smoke of going into stove by calandria pyrolysis smoke sub-cylinder 21 in the burning disposal process through the whole high temperature section of a combustion chamber 17 with dual firing chamber 15.Because it at high-temperature region time of staying long enough, can guarantee the abundant pyrolysis of the harmful substance in the flue gas.For guaranteeing the abundant after-flame of flammable fugitive constituent, this stove has been arranged high-voltage secondary wind 16.
Claims (2)
1, the method for a kind of refuse harmless treatment and recycling is characterized in that: comprise following technical method: adopt high-temperature flue gas pyrolysis rotary kiln technology, high-temperature flue gas and pyrolysis smoke circulation incineration technology and shaping fuel technology.
2, the method for refuse harmless treatment according to claim 1 and recycling, it is characterized in that: the technical process of its technical method comprises following steps:
Step 1: will enter refuse in the storage bin(hopper) is sent into rotary kiln in succession by the requirement of required pyrolysis processing amount feed end by the hydraulic pressure material-pulling device, the refuse of going into behind the kiln moves to the rotary kiln discharge end under effect with conditions such as angle of declinations is stirred in revolution uniformly, burn the part of the high-temperature flue gas that produces by incinerator, under the effect of rotary kiln negative pressure, send in the discharge end of rotary kiln by the high-temperature flue gas pipeline, the flow direction of high-temperature flue gas in kiln is opposite with the direction of motion of refuse, refuse in the rotary kiln decomposes under the effect of high-temperature flue gas, its pyrolysis gas confuses flue gas and flows to the rotary kiln feed end, under the effect of pyrolysis smoke blower fan, send in the calandria pyrolysis smoke sub-cylinder of incinerator and go into the stove burning disposal by the pyrolysis smoke pipeline, decorating film matter behind the waste pyrolysis is sent outside the kiln by sealing cooling output device;
Step 2: the high-temperature flue gas that is taken from incinerator dual firing chamber upper end is sent in the discharge end of high-temperature flue gas pyrolysis rotary kiln by the high-temperature flue gas pipeline under the effect of rotary kiln negative pressure, the high-temperature flue gas of going into kiln is carrying out pyrolysis to the refuse in the kiln when the rotary kiln feed end flows, its pyrolysis gas confuses behind the feed end of flue gas flow direction rotary kiln under the effect of pyrolysis smoke blower fan the calandria pyrolysis smoke sub-cylinder of sending into incinerator by the pyrolysis smoke pipeline and goes into the stove burning disposal, by adjusting the rotating speed of pyrolysis smoke blower fan, regulate and control temperature and pressure in the high-temperature flue gas pyrolysis rotary kiln, and then the purpose of realization control waste pyrolysis treating capacity;
Step 3: because the not direct incinerating waste material of this incinerator, but incinerating combustion value is higher and uniform shaped fuel, its elegance with hot blast, a combustion chamber all with the part employing heat-insulating combustion chamber of dual firing chamber, therefore can guarantee the stable operation of this stove, the pyrolysis smoke of going into stove by calandria pyrolysis smoke sub-cylinder in the burning disposal process through whole high temperature section of a combustion chamber and dual firing chamber, because of its at high-temperature region time of staying long enough, can guarantee the abundant decomposition of harmful substance, for guaranteeing the abundant after-flame of flammable fugitive constituent, this stove has been arranged high-voltage secondary wind;
Step 4: the decorating film matter behind the waste pyrolysis is by sealing cooling output device, pass through magnetic separation again, pick up choosing, be squeezed into shaped fuel again after the processes such as screening, the sealing function of its sealing cooling output device is isolated with oxygen, material takes place before preventing to lower the temperature fire burns, effect after the cooling is to end pyrolysis, and be follow-up magnetic separation, pick up choosing, technical process such as screening provide suitable processing temperature environmental condition, magnetic separation is that goods and materials are recycled and the removing inorganic matter with the effect of picking up choosing, thereby improve shaped fuel than part calorific value, the effect of screening is a molding effect of guaranteeing fuel, for compensating special regional hazardous waste calorific value deficiency, for guaranteeing the heat capacity of incinerator, also can in the processing shaped fuel, add a certain proportion of exotic fuels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810041067A CN101639222A (en) | 2008-07-28 | 2008-07-28 | Method for innocent treatment and resource utilization of wastes |
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| CN200810041067A CN101639222A (en) | 2008-07-28 | 2008-07-28 | Method for innocent treatment and resource utilization of wastes |
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| CN101639222A true CN101639222A (en) | 2010-02-03 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102294340A (en) * | 2011-07-04 | 2011-12-28 | 孙怀宇 | Harmless treatment system for city refuse burning, and method thereof |
| CN103542415A (en) * | 2013-11-01 | 2014-01-29 | 上海煜工环保科技有限公司 | Smoke pyrolysis kiln-furnace-combined type sludge incinerator |
| CN103900093A (en) * | 2012-12-31 | 2014-07-02 | 江苏和顺环保股份有限公司 | Incinerating and sludge drying process |
| CN106322405A (en) * | 2016-09-29 | 2017-01-11 | 重庆文渠环保科技有限公司 | Method for processing high-moisture-content sludge through rotary kiln technology in harmless manner |
| CN109485228A (en) * | 2018-12-19 | 2019-03-19 | 福建中庚环境技术有限公司 | A kind of synergic processing process that sludge is combined with rubbish |
-
2008
- 2008-07-28 CN CN200810041067A patent/CN101639222A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102294340A (en) * | 2011-07-04 | 2011-12-28 | 孙怀宇 | Harmless treatment system for city refuse burning, and method thereof |
| CN102294340B (en) * | 2011-07-04 | 2013-07-24 | 李东国 | Harmless treatment system for city refuse burning, and method thereof |
| CN103900093A (en) * | 2012-12-31 | 2014-07-02 | 江苏和顺环保股份有限公司 | Incinerating and sludge drying process |
| CN103542415A (en) * | 2013-11-01 | 2014-01-29 | 上海煜工环保科技有限公司 | Smoke pyrolysis kiln-furnace-combined type sludge incinerator |
| CN106322405A (en) * | 2016-09-29 | 2017-01-11 | 重庆文渠环保科技有限公司 | Method for processing high-moisture-content sludge through rotary kiln technology in harmless manner |
| CN109485228A (en) * | 2018-12-19 | 2019-03-19 | 福建中庚环境技术有限公司 | A kind of synergic processing process that sludge is combined with rubbish |
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Open date: 20100203 |