CN100462339C

CN100462339C - High temperature digestion device for semisolid organic waste matter

Info

Publication number: CN100462339C
Application number: CNB2006100875780A
Authority: CN
Inventors: 张相锋
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-06-15
Filing date: 2006-06-15
Publication date: 2009-02-18
Anticipated expiration: 2026-06-15
Also published as: CN1868975A

Abstract

A high-temp digestion apparatus for semi-solid organic waste is composed of an insulating jacket of reactor, an internal circulation system consisting of main reactor body and internal downflow tubes, an air supply system comprising blower, aerating tube, valves and flowmeter for supplying the primary air and secondary air to the upflow liquid and downflow liquid in reactor to increase the utilization rate of O2.

Description

High temperature digestion device for semisolid organic waste matter

Technical field

The invention belongs to field of environment protection, particularly a kind of high temperature digestion device for semisolid organic waste matter.

Background technology

Many organic waste all are semi-solid state, as the excrement dirt of livestock and poultry farm (pig ox chicken and duck etc.), swill hogwash, food-processing refuse etc.The treatment process of these semi-solid state organic waste mainly contains two kinds: a kind of is with solid-liquid separating equipment it to be become solid waste and high concentrated organic wastewater respectively, handles respectively again; A kind of is to increase the solids content reduction of water with the semi-solid state organic waste again, handles as high concentrated organic wastewater.The processing cost of these two kinds of methods is all very high, and can not the efficient recovery resource.On the other hand, be rich in the necessary nutrients such as nitrogen phosphorus potassium of plant-growth in the semi-solid state organic waste, have the potential fertilizer utilization and be worth.Adopt the method for thermophilic digestion, under multiple action of microorganisms, the semi-solid state organic waste are converted into semi-solid state fertilizer give back, realized the benign cycle of material, avoided the deficiency of aforementioned two class treatment processs in soil.

Similarly the high temperature aerobic digestion technology is used on sludge treatment to some extent, but it needs the mud forced refluence to stir with the mixing of liquid in the realization response device, and this will increase the energy consumption of system.

Summary of the invention

In order to overcome the deficiency of existing semi-solid state organic waste management, realize the resource utilization of semi-solid state organic waste, the invention provides a kind of high temperature digestion device for semisolid organic waste matter, simple in structure, can realize the circulation of liquid organic waste in reactor, improve degradation effect and kill pathogenic bacteria, and can further cut down the consumption of energy.

The technical solution adopted for the present invention to solve the technical problems is: the semi-solid state organic waste are along the feed-pipe of reactor head, enter in continuous or semicontinuous mode and to fall stream pipe, the airing system that adds is supply primary air and secondary air in reactor respectively, realize internal recycle with accelerating system, reach a high temperature, and finally realize the stabilization and the fertilizerization of semi-solid state refuse.At first, initially enter the zone that falls the stream pipe at the semi-solid state organic waste, longshore current body descending direction blasts primary air, make microorganism utilize primary air to decompose organic waste, while release of heat, falling stream, to form thermal pressure thus in the pipe poor, downdraft carry secretly with fluid under the combined action of thermal pressure difference, cold refuse moves downward with hot-fluid and mixes, and progressively decomposed, oxygen is progressively consumed; Falling fluid in the stream pipe arrives downwards to flow out behind the reactor bottom and falls the stream pipe, then upwards become up-flow liquid, run into the secondary air that upwards blasts in bottom, up-flow district, the oxygen that consumes is replenished on the one hand, impel degree of mixing increasing between fluid on the other hand, microorganism utilizes secondary air to continue to decompose organic waste and release of heat, and fluid can reach 50～65 ℃ of high temperature; After up-flow liquid arrived reactor head, part enters once more fell the stream pipe and carries out the next round circulation, and part up-flow liquid is discharged from the discharge outlet at top.After the system that treats was stable, the liquid of discharge was very stable owing to experienced some internal recycling of taking turns, and is destitute of smell, and can be used as the semi-solid state organic fertilizer and was used for agricultural and horticulture production.

Concrete structure of the present invention is: the reactor profile is that top is cylindrical, and the bottom is back taper, its outer covering insulation material; Inside reactor stream pipe, blast inlet, a secondary air inlet mouth fall by wall of reactor, inside and be full of during the semi-solid state organic waste constitute semi-solid state organic waste internal circulation system; Constitute airing system by gas blower, aerated conduit, valve, under meter, in reactor, fall flow liquid body and up-flow liquid supply primary air and secondary air respectively; One time wind-distributing pipe is positioned at 1/3 zone, top that falls the stream pipe, and one time the wind-distributing pipe cross section is circular, and Lower Half is covered with aperture; The secondary wind distribution pipe is positioned at 1/3 zone, bottom that falls between stream pipe and wall of reactor, and the secondary wind distribution tube section is circular, and the first half is covered with aperture; Reactor head establish the foam cutting unit to eliminate because aeration and issuable foam; Opening for feed is located at reactor head, and opening for feed is cylindrical, and the stream that falls that enters reactor is downwards managed top; Falling the stream pipe, to be top tubaeform, and the bottom is cylindric; The product discharge outlet is located at the wall side on reactor top, but according to charging form mounted valve with the control discharging, product discharge outlet position is higher than that to fall stream pipe suitable for reading.

The invention has the beneficial effects as follows, the mixing effect that interior thermal pressure of stream pipe and secondary air feed fall in utilization realizes semi-solid state organic waste circulating in reactor, thereby improved the oxygen transmission efficiency, avoided the power consumption of semi-solid state organic waste forced refluences.Utilize the present invention directly to realize fertilizerization to the various semi-solid state organic waste (excrement dirt, swill hogwash, the food-processing waste of livestock and poultry farm (pig ox chicken and duck etc.)) that produce in the industrial and agricultural production, and needn't carry out pre-treatment such as solid-liquid separation or dilution, and simple in structure, the scope of application is extensive.

Description of drawings

Fig. 1 is a structural profile synoptic diagram of the present invention

Among Fig. 1,1 is reactor, and 2 for falling the stream pipe, and 3 is the secondary wind distribution pipe, 4 is a wind-distributing pipe, 5 is the liquid level observation tube, and 6 is the product discharge outlet, and 7 is product discharge outlet valve, 8 is venting port, 9 is semi-solid state organic waste opening for feeds, and 10 is the foam cutting unit, and 11 are wall of reactor (containing lagging material), 12 is a gas manifold, 13 is a gas supply flow meter, and 14 is a gas manifold valve, and 15 is total air-supply duct, 16 is gas blower, 17 is secondary gas manifold valve, and 18 is secondary gas supply flow meter, and 19 is the secondary gas manifold.

Fig. 2 is a floor map of the present invention

Embodiment

The invention will be further described below in conjunction with accompanying drawing.

Structure of the present invention as depicted in figs. 1 and 2, comprise reactor 1, by falling the internal circulation system that stream pipe 2, wall of reactor 11 and semi-solid state organic waste constitute, by gas blower 16, total air-supply duct 15, a wind-distributing pipe 4, a gas manifold 12, a gas supply flow meter 13, a gas manifold valve 14, secondary wind distribution pipe 3, secondary gas manifold 19, secondary gas supply flow meter 18, airing system that secondary gas manifold valve 17 constitutes and foam cutting unit 10, semi-solid state organic waste opening for feed 9, product discharge outlet 6, venting port 8 etc.

According to semi-solid state organic waste characteristics and feeding rate, determine the air flow quantity of air feed and secondary air feed.Start gas blower 16, regulate gas manifold valve 14 and secondary gas manifold valve 17, make air from total air-supply duct 15 enter gas manifold 12 and secondary gas manifold 19 respectively, with gas supply flow meter 13 and secondary gas supply flow meter 18 demonstration air flow quantitys.Primary air enters falling stream pipe 2 and move downward in the reactor 1 from gas manifold 12 by wind-distributing pipe 4.Secondary air enters falling between stream pipe 2 and the wall of reactor 11 and move upward in the reactor 1 from secondary gas manifold 19 by secondary wind distribution pipe 3.

The semi-solid state organic waste of normal temperature add falling the stream pipe 2 of reactor 1 from opening for feed 9, in 1/3 zone, top that falls stream pipe 2 and the high-temperature material in the reactor 1 meet, under the stirring action of the downdraft of wind-distributing pipe 4 ejections, mixing, the temperature of mixture descends, it is poor to produce thermal pressure thus, impel mixture to flow downward and constantly mix with original material generation convection current, mixture begins to decompose, consume oxygen and release reaction heat under action of microorganisms.Under thermal convection and the combined action of air-flow blended, oxygen transfer efficiency improves on the one hand, impels mixture to flow downward on the other hand.Then, mixture flows out and to fall stream pipe 2, arrives behind reactor 1 bottom then upwards, upwards flows along the area of space that falls between stream pipe 2 and the wall of reactor 11.In reactor 1 bottom, the up-flow material runs into the secondary air that makes progress from secondary wind distribution pipe 3, and secondary air makes material mix mutually by the strength stirring to material one side supplemental oxygen on the other hand, promotes the oxygen transmission, improves oxygen transfer efficiency.Material constantly obtains decomposing in the way of rising, and temperature continues to raise, and generally can reach 55～65 ℃, and high temperature can add the mixture in the heat drop stream pipe 2, accelerates its decomposition rate, can also effectively kill pathogenic bacteria.At last, up-flow material arrival reactor 1 top, partial material is discharged as organic fertilizer from product discharge outlet 6, and the hydraucone downwards backflow of partial material through falling stream pipe 2 tops mixes the new circulation of beginning with the semi-solid state organic waste that newly add.

Air is spurting through wind-distributing pipe 4 and secondary wind distribution pipe 3 and enters reactor 1, for the digestion of semi-solid state organic waste provides oxygen, air forms micro-bubble in reactor, bubble constantly moves upward, reach reactor 1 top at last, most of gas is discharged through venting port 8, and small part forms foam top.Be located at foam cutting unit 10 service intermittents at reactor 1 top,, reduce energy consumption simultaneously to eliminate issuable foam.

For the continous way operation, the semi-solid state organic waste are continuously added into reactor from opening for feed 9, and the product that reaction is good is discharged from product discharge outlet 6 automatically by overflow, need not to be provided with product discharge outlet valve 7.For semi continuous operation, the semi-solid state organic waste are opened the product that product discharge outlet valve 7 will handle well and are discharged from product discharge outlet 6 before opening for feed 9 chargings; Then, close product discharge outlet valve 7, the semi-solid state organic waste are added into reactor from opening for feed 9, enter the semi-solid state organic waste of reactor 1 by 5 controls of liquid level observation tube.

Claims

1. a high temperature digestion device for semisolid organic waste matter can be admitted the semi-solid state organic waste and be translated into organic fertilizer, and it is characterized in that: device body upper is cylindric, and the bottom is back taper, and opening for feed is established at the top, and opening for feed is cylindrical; Device inside is established and is fallen the stream pipe, falls stream pipe top flare, and the bottom is cylindric; The product discharge outlet is located at the wall side on device top, and product discharge outlet position is higher than that to fall stream pipe suitable for reading; Airing system is made of gas blower, aerated conduit, valve and under meter, is respectively to fall flow liquid body and up-flow liquid supply primary air and secondary air in the device; One time wind-distributing pipe is positioned at 1/3 zone, top that falls the stream pipe, and one time the wind-distributing pipe cross section is circular, and Lower Half is covered with aperture; The secondary wind distribution pipe is positioned at 1/3 zone, bottom that falls between stream pipe and wall of reactor, and the secondary wind distribution tube section is circular, and the first half is covered with aperture; Device wall, inside stream pipe, inlet mouth, a secondary air inlet mouth fall and be full of during the semi-solid state organic waste constitute semi-solid state organic waste internal circulation system; The semi-solid state organic waste are managed access to plant from its top feed mouth through falling to flow, because the combined action of thermal pressure and supply gas pressure digests mobile also constantly the obtaining of device internal recycle, are converted into organic fertilizer at last and discharge from discharge outlet.

2. high temperature digestion device for semisolid organic waste matter according to claim 1 is characterized in that: the outside material of device contains the insulation composition.

3. high temperature digestion device for semisolid organic waste matter according to claim 1, it is characterized in that: described semi-solid state organic waste are sewage-farm mud, plant's fecal sewage, food-processing residue, swill hogwash, wherein comprise 3%～18% volatile solid, comprise 30%～90% volatile solid in the total solids.

4. high temperature digestion device for semisolid organic waste matter according to claim 1 is characterized in that: the drive manner of this device is continous way or semi continuous.

5. high temperature digestion device for semisolid organic waste matter according to claim 1 is characterized in that: the initial hybrid position that enters original semi-solid state organic waste in the semi-solid state organic waste of reactor and the reactor occurs in and falls in the stream pipe.

6. high temperature digestion device for semisolid organic waste matter according to claim 1 is characterized in that: reactor head is established the foam cutting unit.