CN101067114A

CN101067114A - Heating and maintaining device for anaerobic fermenting tank

Info

Publication number: CN101067114A
Application number: CN 200710068859
Authority: CN
Inventors: 蔡昌达; 蔡磊
Original assignee: Hangzhou Energy & Environment Engineering Co Ltd
Current assignee: Jiangsu Yancheng Port Yannong Circular Agriculture Co ltd
Priority date: 2007-05-17
Filing date: 2007-05-17
Publication date: 2007-11-07
Anticipated expiration: 2027-05-17
Also published as: CN101067114B

Abstract

The present invention relates to one kind of heating and maintaining device for anaerobic fermenting tank. The heating and maintaining device without contact with the fermenting liquid can heat the fermenting tank homogeneously. The heating and maintaining device includes one vertical water inlet pipe, one vertical water outlet pipe, and coil pipes surrounding the anaerobic fermenting tank and connected between the water inlet pipe and the water outlet pipe.

Description

Heating and maintaining device for anaerobic fermenting tank

Technical field

The present invention relates to a kind of heating and maintaining device for anaerobic fermenting tank, be particularly useful for heating and being incubated of anaerobic ferment devices in the biogas engineering.

Background technology

Anaerobically fermenting is the most crucial link of biogas engineering, and temperature is one of the factor of the most critical of decision anaerobically fermenting effect.At present, modal in biogas engineering is mesophilic digestion and thermophilic fermentation, and leavening temperature is 35～38 ℃ or 50～55 ℃; And for guaranteeing the high reactivity of anaerobically fermenting bacterium, the temperature difference must not be greater than 2 ℃ in its jar.Therefore, need in the winter time anaerobic ferment devices is heated and is incubated to keep the required temperature of anaerobically fermenting, guarantee the normal steady running of anaerobically fermenting.At present, the Chang Yong mode of heating have pair fermentation raw material heat in advance with anaerobic jar in heat two kinds of forms.This dual mode can play the effect that heats to a certain extent, but usually follows a series of problems: (1) heats in advance normally fermentation raw material and carries out at pretreatment pool, and thermal losses is bigger; (2) above-mentioned two kinds of modes that heat all are that heating pipe directly contacts with fermented feed liquid, the easy like this fouling that causes heating pipe, thus have a strong impact on heat exchange efficiency; (3) uneven phenomenon usually occurs heating, the upper and lower temperature difference of anaerobic jar is big (about 5 ℃), thereby influence fermentation efficiency and factor of created gase.

Chinese patent literature CN2586698Y discloses " a kind of fermentor tank ", and the inner bag external fixation of this jar has spiralling heating tube.

Summary of the invention

The technical issues that need to address of the present invention are, do not contact with fermented liquid and reach tank body upper, middle and lower portion to heat evenly.

Heating and maintaining device for anaerobic fermenting tank of the present invention has water inlet pipe and rising pipe, is connected with between two pipes to be looped around the outer spirrillum coil pipe of fermentor tank, it is characterized in that described water inlet pipe and rising pipe are vertical tubes; Described coil pipe divides some groups, and at least two every group are arranged in order, and wherein one or above coil pipe are communicated with upwards with water inlet pipe and spiral to rising pipe, and other one or above coil pipe are communicated with rising pipe and upwards spiral to water inlet pipe; Every in two class coil pipes all spiral more than the circle.To heat coil pipe and be located at outside the tank body, and avoid heating pipe to contact, solve the problem that heats the easy fouling of heating pipe in the mode in traditional jar with the direct of fermented liquid; The coil pipe that water inlet pipe connects existing from spiral down and on, have again from last spiral and under, solved the homogeneity question of heating dexterously.Method is installed thus heats coil pipe and can make the upper, middle and lower of whole anaerobic jar keep uniform leavening temperature, makes jar temperature difference of interior each layer be reduced to minimum.

As preferably, 2～6 every group in coil pipe, odd number pipe wherein are communicated with upwards with water inlet pipe and spiral to rising pipe, and the even number pipe is communicated with rising pipe and upwards spirals to water inlet pipe; Two class coil pipes all spiral 2～4 the circle.Odd even alternately can be so that heat more even.

As preferably, some groups of coil pipes follow by group around, promptly one group around intact, another group and then up around, arrange the compactness that seems like this.

One group of coil pipe can be continuously every close around, as preferably, the interval H between the two adjacent groups coil pipe is 0.7～1.0m, this heats under the uniform prerequisite guaranteeing, can suitably reduce manufacturing cost.

Coil pipe and tank body fixed scheme are a lot, as preferably, have one and above many U-shapeds clip and tank body to fix on every group of coil pipe, and the U-shaped number on the clip is identical with every group of coil pipe radical.It is every group of coil pipe fixing only needs U-shaped clip more than somewhere.

The invention has the beneficial effects as follows: reduced heating pipe because of the replacing number of times that fouling causes, saved investment; Realized the layering Inlet and outlet water, on the tank skin different heights, realized uniform heat exchange, made the interior temperature difference of whole tank body less than 2 ℃.

Description of drawings

Fig. 1 is that the anaerobic fermentation tank heating pipe twines schematic layout pattern;

Fig. 2 is that the A portion of Fig. 1 heats heating pipe mode of connection synoptic diagram for one group;

Fig. 3 is the B portion temperature raising and maintaining structural profile synoptic diagram of Fig. 1.

Among the figure:

1-anaerobism tank body; 2-ring wall heating pipe; 3-heating pipe clip;

4-thermal insulation layer; 5-protecting sheet; 6-water inlet pipe;

7-rising pipe; 8-water discharge valve;

A, b, c, d, e-Inlet and outlet water interface, the Inlet and outlet water interface of same heating pipe of same letter representative.

Embodiment

The present invention is further described below in conjunction with drawings and Examples.

As shown in Figure 1, main following 3 parts of heating and maintaining device for anaerobic fermenting tank of the present invention are formed:

(1) heats system.Mainly comprise heating pipe 2, water inlet pipe 6, rising pipe 7;

(2) heat-insulation system.It mainly is lagging material 4;

(3) auxiliary facility.Mainly comprise fixedly the heating pipe clip 3 and the protecting sheet 5 of heating pipe.

Embodiment 1.See Fig. 1, Fig. 2, this routine heating and maintaining device for anaerobic fermenting tank is as follows: the outer setting of anaerobic fermentation tank is fixed with water inlet pipe 6 and rising pipe 7, and water discharge valve 8 is arranged under the rising pipe.There are some groups to heat coil pipe 2 spirrillums and be coiled in outside the tank body, every group of 2 circles that spiral; Can establish 5～20 groups at the anaerobic jar tank wall of 4～16m, by group around, the interval H between the two adjacent groups coil pipe is 0.8m.Heat coil pipe 2 and keep certain distance, do not twine tension, in order to avoid expanded by heating snaps with anaerobic jar.This routine every group of coil pipe has a, b, c, d, e totally five be arranged in order, fix with tank body by many U-shapeds clip 3 along 1 every meter of tank skin, also guaranteed the spacing between the heating pipe 2.Outside heating pipe 2, cover two-layer lagging material 4 and be incubated, reduce heat and scatter and disappear, improve increase the temperature efficiency.Adopt fissure of displacement installation form between the two-layer lagging material 4; Outer covering protection plate 5 is seen Fig. 3.

The connection of five coil pipes and operation are described as follows on the same group: odd number pipe a wherein, and c, e are communicated with water inlet pipe 1 earlier, coil nearly two from bottom to top and are communicated with rising pipe 2 respectively after enclosing; And other even number pipe b, d then is communicated with rising pipe 2 earlier, coils two from bottom to top and is communicated with water inlet pipe 1 respectively after enclosing.As seen from Figure 1, water inlet interface a, c, e be than water outlet interface a, c, and the e position is low, heats promptly that hot water moves in the coil pipe 2 from low to high, and water temperature reduces gradually; And water inlet interface b, the position of d is than water outlet interface b, and the position height of d heats promptly that hot water moves from high to low in the coil pipe 2, and water temperature also reduces gradually.Like this, feed-water end of above-mentioned two row heating pipes (hot water end) and water side (cold water end) cross arrangement, thus made this organize the temperature difference minimum between each pipe, heat the most even.Make at last have many group coil pipes outer around the upper, middle and lower portion of anaerobic fermentation tank heat quite even.

Claims

1, a kind of heating and maintaining device for anaerobic fermenting tank has water inlet pipe and rising pipe, is connected with between two pipes to be looped around the outer spirrillum coil pipe of fermentor tank, it is characterized in that described water inlet pipe (6) and rising pipe (7) are vertical tubes; Described coil pipe divides some groups, and at least two every group are arranged in order, and wherein one or above coil pipe are communicated with water inlet pipe (6) and upwards spiral to rising pipe (7), and other one or above coil pipe are communicated with rising pipe (2) and upwards spiral to water inlet pipe (1); Every in two class coil pipes all spiral 2～4 the circle.

2, heating and maintaining device for anaerobic fermenting tank according to claim 1, its feature is in every group 2～6 in described coil pipe, odd number pipe wherein is communicated with water inlet pipe (6) and upwards spirals to rising pipe (7), and the even number pipe is communicated with rising pipe 7 and upwards spirals to water inlet pipe (6); Two class coil pipes all spiral 2～4 the circle.

3, heating and maintaining device for anaerobic fermenting tank according to claim 1 and 2, it is characterized in that described some groups of coil pipes follow by group around.

4, according to claim 1 or 2 or described heating and maintaining device for anaerobic fermenting tank, it is characterized in that the interval H between the described two adjacent groups coil pipe is 0.7～1.0m.

5, heating and maintaining device for anaerobic fermenting tank according to claim 3 is characterized in that the interval H between the described two adjacent groups coil pipe is 0.7～1.0m.

6, heating and maintaining device for anaerobic fermenting tank according to claim 1 and 2 is levied and is to have on described every group of coil pipe one and above many U-shapeds clip (3) to fix with tank body, and the U-shaped number on the clip is identical with every group of coil pipe radical.

7, heating and maintaining device for anaerobic fermenting tank according to claim 3 is levied and is to have on described every group of coil pipe one and above many U-shapeds clip (3) to fix with tank body, and the U-shaped number on the clip is identical with every group of coil pipe radical.

8, heating and maintaining device for anaerobic fermenting tank according to claim 4 is levied and is to have on described every group of coil pipe one and above many U-shapeds clip (3) to fix with tank body, and the U-shaped number on the clip is identical with every group of coil pipe radical.

9, heating and maintaining device for anaerobic fermenting tank according to claim 6, its feature have thermal insulation layer (4) outside described coil pipe.

10, heating and maintaining device for anaerobic fermenting tank according to claim 7, its feature have thermal insulation layer (4) outside described coil pipe.