CN101050413A - Method of two-double spray coating heat preservation for biomass pool in middle or small types - Google Patents
Method of two-double spray coating heat preservation for biomass pool in middle or small types Download PDFInfo
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- CN101050413A CN101050413A CNA2007100147650A CN200710014765A CN101050413A CN 101050413 A CN101050413 A CN 101050413A CN A2007100147650 A CNA2007100147650 A CN A2007100147650A CN 200710014765 A CN200710014765 A CN 200710014765A CN 101050413 A CN101050413 A CN 101050413A
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- methane
- generating pit
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- heat preservation
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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
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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Abstract
This invention discloses a method for preserving the temperature of medium- and small-scale methane pool by double-layered spraying. The method comprises: enlarging the radius and depth of methane pool by 0.1-0.5 m and 0.2-1 m, respectively, during methane pool construction, spreading perlite material at the bottom of methane pool, coating double-layered plastic thin films onto the perlite material, and then coating a layer of cement mortar. The method is suitable for 6-300 m3 methane pool, and can solve the problem of low methane productivity in low-temperature season, improve the waterproof performance of methane pool, and prolong the service life of methane pool.
Description
Technical field
The present invention relates to a kind of heat preserving method of methane-generating pit, be specifically related to a kind of method of two-double spray coating heat preservation of middle-size and small-size methane-generating pit, belong to methane-generating pit heat preservation technology field.
Background technology
Development biogas is the important development direction that the rural area new forms of energy are built, but northern area is difficult to the outwardness of problems such as solving owing to warm naturally marquis's condition restriction, insulation, the low not even aerogenesis of factor of created gase in winter, reach normal air feed of several months, make peasant household lose the confidence, the pond also is reluctant to build by the peasant household that builds the pond of having ready conditions.Therefore, the insulation problem of methane-generating pit has become one of important factor of restriction northern area biogas development.
One, the insulation of methane-generating pit is puzzlement users and insider's technical matters always, comprehensive domestic existing heat preservation technology, probably be divided into several, that is:
1 indoor (in the mew) built facility insulations such as pond, insulation brooder, warm circle and sun power;
Means insulations such as hot raw material, top, pond stalks mulching and adding hot water are made in 2 traditional increasing bacterial classification input amount, addings;
3 by inorganic materials and whipping agent cast insulation etc.
Two, because facility construction costs such as brooder are higher, generally peasant household is unable bears; And traditional heat preservation technology is subjected to many restrictions of resources such as horsehit, hot water; Inorganic foamed material cast also because of operate inconvenience, cost is too high and resistance to compression is resisted puzzlements such as performance is on the low side and is difficult to general implementation.
Summary of the invention
At the deficiencies in the prior art, the invention provides a kind of method of two-double spray coating heat preservation of middle-size and small-size methane-generating pit.
Summary of the invention
The present invention takes " two spray method " to realize the insulation in centering small-sized methane pond; specifically by way at methane-generating pit perimeter walls polyurethane spray foam and gunite; farthest realized insulation to methane-generating pit; and simultaneously polyurethane foam is protected by gunite; other technologies all get final product with ordinary method; the insulation in the special centering small-sized methane of method of the present invention pond can reach the ideal heat insulation effect.
Detailed Description Of The Invention
A kind of method of two-double spray coating heat preservation of middle-size and small-size methane-generating pit, when building biomass pool, the unwrapping wire radius is increased 0.1～1.5 meter according to prior art, Chi Shen increases 0.2～1 meter, laying depth is 0.1～0.5 meter a perlite material at the bottom of the pond, cover on the perlite material with double-plastic, repave one deck roofing waterproofing material; To the polyurethane foam of 2～10 centimetres of thickness of whole methane-generating pit outer wall spraying one deck, to be formed after, spray the sand-cement slurry of one deck 0.2～2 cm thick again.
Preferred cement of the sand-cement slurry of above-mentioned spraying usefulness and sand weight ratio 1: 1～1.5, the weight ratio of cement and water 1: 0.8～1.5.0.02～0.2 centimetre of the granularity of preferred sand.
Described methane-generating pit is brick methane-generating pit, whole concrete structure methane tank, brick mix structure methane-generating pit or glass fibre reinforced plastic structure methane-generating pit.
Preferably, the methane-generating pit external wall of brick methane-generating pit, whole concrete methane-generating pit or brick mix structure is smeared the cement sand-lime of 2～5 centimetres of thickness of one deck earlier, cement and sand weight ratio 1: 1.6～2, polyurethane spray foam and sand-cement slurry according to this again.The amount of water that needs in the cement sand-lime is according to prior art.
After treating the outer sand-cement slurry sclerosis of polyurethane foam, to methane-generating pit leak, air leakage test, after confirming not leak, can carry out routine operations such as landfill.
Leak, process such as air leakage test, in fact also be the settling process of whole methane-generating pit; Before this program is finished, must not carry out operations such as landfill.
Behind landfill above the methane-generating pit, can above methane-generating pit, plant flowers and plants or other plant, but not can be used as road or deposit weight.
Method of the present invention is adapted to the insulation of middle-size and small-size methane-generating pit, is particularly suitable for the methane-generating pit that 6～300 cubic metres of ponds hold.
In the inventive method polyurethane foamed material is not particularly limited, selects to get final product, mainly utilize the high rate of closed hole of polyurethane foam, after the spraying of surface, can form a complete heat insulation and water resistance layer by this area routine techniques.Preferred use is rigid polyurethane foam among the embodiment, about thermal conductivity 0.03W/M.K.
The inventive method compared with prior art excellent results is as follows:
1, method of the present invention has solved former methane-generating pit low temperature season not an aerogenesis or the little difficult problem of gas production rate
Under the general condition, but biogas microorganism equal growth and breeding in 8～60 ℃ of scopes, but under normal temperature condition, along with the rising of temperature, fermentation time shortens, gas production rate increases; Along with the reduction of temperature, fermentation time prolongs, gas production rate reduces; Adopt method of the present invention, the high heat preservation performance of urethane thermal conductivity 0.03W/M.K, the heat of self was preserved, can avoid effectively again that low temperature has a direct impact temperature in the pond by brick, concrete outside the pond, make that microorganism is in the relative constant temp environment in the pond, gas production rate is big and balanced throughout the year.
2, method of the present invention has improved the water-repellancy of methane-generating pit to greatest extent
The brick of the methane-generating pit of prior art or concrete directly and the landfill soil phase connect, the existence of water is arranged in the backfill soil inevitably, because the high rate of closed hole of polyurethane foam, inherent micropore is not connected, so, after the spraying of surface, can form a complete heat insulation and water resistance layer, improve the water-repellancy of methane-generating pit.
3, prolong the work-ing life of methane-generating pit
Characteristics such as that polyurethane material has is acidproof, alkaline-resisting, resistance to oxidation; the polyurethane foam of the inventive method is that spraying is adhered to, seamless, no interface in addition; form a complete protective layer at the methane-generating pit periphery; of the invasion and attack of peripheral various unfavorable factor have been avoided to the bay wall wall; so prolonged the work-ing life of methane-generating pit greatly, can prolong about 10 years.
4, once investment is benefited continuously, and energy-saving and environmental protection are health again
The brick mix structure methane-generating pit employing two-double spray coating heat preservation of the present invention that 8 cubic metres of ponds hold, methane-generating pit prolongs 10 year life-span, equals to save the expense of building of 0.5 mouthful of methane-generating pit; The more conventional methane-generating pit of spraying polyurethane every year can voluminous gas 3～4 months, calculates with existing gas price, saved more than 50～70 yuan in every month.In addition, also have benefits such as energy-saving and environmental protection, health.
Embodiment
The present invention will be further described below in conjunction with embodiment, among the embodiment not in detail the explanation all by state of the art.
The brick methane-generating pit method of two-double spray coating heat preservation that embodiment 1:8 cubic meter pond holds
The methane-generating pit that holds with 8 cubic metres of ponds is an example, and wherein used polyurethane foamed material is the rigid polyurethane foam that Shandong, Anqiu City, Shandong emerging polyurethane heat insulation material company limited produces, thermal conductivity 0.03W/M.K.Operation steps is as follows:
(1) enlarge methane-generating pit unwrapping wire ratio, the methane-generating pit unwrapping wire radius of 8 cubic metres of pond appearances is generally 1.45 meters, dark 1.8 meters of pond; Present embodiment will enlarge 0.5 meter with the unwrapping wire radius; Chi Shen enlarges 0.2 meter;
(2) waterproof at the bottom of the pond, insulation being handled, is 0.15 meter perlite material at Chi Dipu thickness, covers on the perlite material with double-plastic, repave one deck malthoid class water-proof material, and butt seam carries out encapsulation process; Construct radius and be the peripheral radius of methane-generating pit+0.1 meter; Carry out compaction treatment then, build at the bottom of the pond according to a conventional method.
(3) lay bricks according to a conventional method, prop plank as template by the thickness of wall body requirement in the periphery when building, template leaves 0.5 meter spraying space outward.
(4) remove plank, clear up the concrete material that overflows in the slit then, and smear 2 centimetres of thickness of one deck, 1: 1.8 cement sand-lime, floating, but not polishing.Used cement mark is R 325.
(5) to the hard polyurethane foams of 5 centimetres of whole methane-generating pit perimeter walls spraying one decks, to be formed after, spray 0.3 centimetre of sand-cement slurry of a layer thickness again, the weight ratio of cement and sand 1: 1, the weight ratio of cement and water 1: 0.8, and attention is preserved moisture, maintenance.0.02～0.05 centimetre of the granularity of sand.
At last, the methane-generating pit after insulation handled leaks, air leakage test: after treating the outer sand-cement slurry sclerosis of polyurethane foam, to methane-generating pit leak, air leakage test, after confirming not leak, can carry out operations such as landfill, identical with ordinary method.
Leak, process such as air leakage test, in fact also be the settling process of whole methane-generating pit; Before this program is finished, must not carry out operations such as landfill.
Behind landfill above the methane-generating pit, can on methane-generating pit, harden or plant flowers and plants or other plant.
The brickwork construction methane-generating pit of 6～50 cubic metres of pond appearances all can just enlarge the difference of unwrapping wire size with reference to the present embodiment method.
The whole concrete structure methane tank method of two-double spray coating heat preservation that embodiment 2:100 cubic meter pond holds
The whole concrete structure methane tank that holds with 100 cubic metres of ponds is an example, and polyurethane foamed material wherein is the rigid polyurethane foam that Yongchun, Changle, Shandong heat insulating work company limited sells, thermal conductivity 0.03W/M.K.Operation steps is as follows:
(1) 1.5 meters of methane-generating pit unwrapping wire radius expansions, pond are enlarged 1 meter deeply;
(2) waterproof at the bottom of the pond, insulation are handled: can be earlier routinely technology at the bottom of the pond, lays 0.4 meter of slabstone and flattens with fine sand, its upper berth thickness is 0.4 meter perlite material, breaks 0.3 meter of concrete again, makes heat insulating pearlite material mediate not load-bearing; Build at the bottom of the pond according to a conventional method then.
(3) build according to a conventional method, prop template by the thickness of wall body requirement in the periphery, template is outer as the spraying operating space.
(4) form removal is cleared up the concrete material that overflows in the slit then, and to smear 2 centimetres of thickness of one deck, weight ratio be 1: 2 cement sand-lime, and is floating, but not polishing.
(5) to the hard polyurethane foams of 6 centimetres of whole methane-generating pit perimeter walls spraying one decks, to be formed after, spray 0.2 centimetre of sand-cement slurry of a layer thickness again, the weight ratio of cement and sand 1: 1.2, the weight ratio of cement and water 1: 1,0.02～0.1 centimetre of the granularity of sand.And attention is preserved moisture, maintenance.
At last, the methane-generating pit after insulation handled leaks, air leakage test: after treating the outer sand-cement slurry sclerosis of polyurethane foam, to methane-generating pit leak, air leakage test, after confirming not leak, can carry out other operation, identical with ordinary method.
The full structure methane tank that mixes that 8～300 cubic metres of ponds hold all can be with reference to the method for this embodiment, and just the increase of holding according to the pond enlarges the unwrapping wire size, with at the bottom of reinforcing the pond, and handled easily.
The glass fibre reinforced plastic structure methane-generating pit method of two-double spray coating heat preservation that embodiment 3:10 cubic meter pond holds
(1) enlarges hole, pond unwrapping wire ratio, the unwrapping wire radius is enlarged 0.5～0.8 meter; Chi Shen enlarges 0.2～0.4 meter;
(2) waterproof at the bottom of the pond, insulation being handled, is 0.15 meter perlite material at Chi Dipu thickness, covers on the perlite material with double-plastic, repave one deck malthoid class water-proof material, and butt seam carries out encapsulation process; Construct radius and be the peripheral radius of methane-generating pit+0.2 meter; Carry out compaction treatment then, build at the bottom of the pond according to a conventional method.
(3) biomass pool built from glass fiber reinforced plastic is installed according to a conventional method.
(4) to the hard polyurethane foams (material source is with embodiment 1) of 5 centimetres of whole biomass pool body outer wall spraying one decks, after to be formed, spray 0.3 centimetre of mortar of a layer thickness again, the weight ratio of cement and sand 1: 1, the weight ratio of cement and water 1: 1,0.02～0.05 centimetre of the granularity of sand.And attention is preserved moisture, maintenance.
(5) methane-generating pit after insulation is handled leak, air leakage test: after treating the outer sand-cement slurry sclerosis of polyurethane foam, to methane-generating pit leak, air leakage test, after confirming not leak, can carry out operations such as landfill, identical with ordinary method.
The glass fibre reinforced plastic structure methane-generating pit of 6～20 cubic metres of pond appearances all can be with reference to this embodiment method.
The brick mix structure methane-generating pit method of two-double spray coating heat preservation that embodiment 4:50 cubic meter pond holds
(1) 1 meter of methane-generating pit unwrapping wire radius expansion, pond are enlarged 0.6 meter deeply;
(2) waterproof, insulation at the bottom of the pond are handled: technology is laid 0.3～0.4 meter of slabstone and is flattened with fine sand at the bottom of the pond routinely earlier, upper berth thickness is 0.3 meter perlite material, break 0.2～0.3 meter of concrete again, make heat insulating pearlite material mediate not load-bearing; Build at the bottom of the pond according to a conventional method then.
(3) lay bricks according to a conventional method, when building, prop plank as template by the thickness of wall body requirement in the periphery, template is outer as operating spaces such as sprayings.
(4) remove plank, clear up the concrete material that overflows in the slit then, and to smear 2 centimetres of thickness of one deck, weight ratio be 1: 1.6～2 cement sand-lime, floating, but not polishing.
(5) to the hard polyurethane foams (material source is with embodiment 2) of 4 centimetres of whole methane-generating pit perimeter walls spraying one decks, after to be formed, spray 0.4 centimetre of sand-cement slurry of a layer thickness again, the weight ratio of cement and sand 1: 1, the weight ratio of cement and water 1: 1.2,0.02～0.05 centimetre of the granularity of sand.
At last, the methane-generating pit after insulation handled leaks, air leakage test: after treating the outer sand-cement slurry sclerosis of polyurethane foam, to methane-generating pit leak, air leakage test, after confirming not leak, can carry out other operation, identical with ordinary method.
The brick mix structure methane-generating pit of 6～50 cubic metres of pond appearances all can be with reference to this embodiment method.
Claims (5)
1, a kind of method of two-double spray coating heat preservation of middle-size and small-size methane-generating pit is characterized in that, when building biomass pool the unwrapping wire radius is increased 0.1～1.5 meter, and the pond increases 0.2～1 meter deeply; Laying depth is 0.1～0.5 meter a perlite material at the bottom of the pond, covers on the perlite material with double-plastic, repaves one deck roofing waterproofing material; To the polyurethane foam of 2～10 centimetres of thickness of whole methane-generating pit outer wall spraying one deck, to be formed after, spray the sand-cement slurry of one deck 0.2～2 cm thick again.
2, the method for two-double spray coating heat preservation of middle-size and small-size methane-generating pit as claimed in claim 1 is characterized in that, the sand-cement slurry of described spraying usefulness, cement and sand weight ratio 1: 1～1.5, the weight ratio of cement and water 1: 0.8～1.5.
3, the method for two-double spray coating heat preservation of middle-size and small-size methane-generating pit as claimed in claim 1 is characterized in that, described methane-generating pit is brick methane-generating pit, whole concrete methane-generating pit, brick mix structure methane-generating pit or glass fibre reinforced plastic structure methane-generating pit.
4, the method for two-double spray coating heat preservation of middle-size and small-size methane-generating pit as claimed in claim 3, it is characterized in that, described brick methane-generating pit, whole concrete methane-generating pit or brick mix structure methane-generating pit external wall, smear 2～5 centimetres of thickness cement sands of one deck ash earlier, cement and sand weight ratio 1: 1.6～2, polyurethane spray foam and sand-cement slurry according to this again.
5, the method for two-double spray coating heat preservation of middle-size and small-size methane-generating pit as claimed in claim 1 is characterized in that, described methane-generating pit is the methane-generating pit that 6～300 cubic metres of ponds hold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100147650A CN101050413B (en) | 2007-05-14 | 2007-05-14 | Method of two-double spray coating heat preservation for biomass pool in middle or small types |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100147650A CN101050413B (en) | 2007-05-14 | 2007-05-14 | Method of two-double spray coating heat preservation for biomass pool in middle or small types |
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| Publication Number | Publication Date |
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| CN101050413A true CN101050413A (en) | 2007-10-10 |
| CN101050413B CN101050413B (en) | 2010-08-18 |
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| CN2007100147650A Expired - Fee Related CN101050413B (en) | 2007-05-14 | 2007-05-14 | Method of two-double spray coating heat preservation for biomass pool in middle or small types |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102246934A (en) * | 2010-05-21 | 2011-11-23 | 四川省食品发酵工业研究设计院 | Environmentally-friendly technology for preventing soaking and salting tank from corrosion and seepage |
| CN101580795B (en) * | 2008-05-14 | 2012-07-04 | 新疆西域牧歌农业科技有限公司 | Temperature increasing and preserving method of methane tank at cold region |
| CN103897984A (en) * | 2012-12-25 | 2014-07-02 | 海口同方阳光科技有限公司 | Solar biogas digester structure and insulation technology thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2782811Y (en) * | 2005-01-14 | 2006-05-24 | 白文枚 | Thermo-insulating board for making mathtane generating pit |
| CN2806452Y (en) * | 2005-01-17 | 2006-08-16 | 李明和 | Double-layer methane tank device with anti-leakage inner liner |
-
2007
- 2007-05-14 CN CN2007100147650A patent/CN101050413B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101580795B (en) * | 2008-05-14 | 2012-07-04 | 新疆西域牧歌农业科技有限公司 | Temperature increasing and preserving method of methane tank at cold region |
| CN102246934A (en) * | 2010-05-21 | 2011-11-23 | 四川省食品发酵工业研究设计院 | Environmentally-friendly technology for preventing soaking and salting tank from corrosion and seepage |
| CN103897984A (en) * | 2012-12-25 | 2014-07-02 | 海口同方阳光科技有限公司 | Solar biogas digester structure and insulation technology thereof |
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| CN101050413B (en) | 2010-08-18 |
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