CN2878402Y

CN2878402Y - High concentration baffle-type methane pool

Info

Publication number: CN2878402Y
Application number: CNU2006200086450U
Authority: CN
Inventors: 郑毅; 张树静
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-03-08
Filing date: 2006-03-08
Publication date: 2007-03-14
Anticipated expiration: 2016-03-08

Abstract

This utility model discloses a high concentration turn-back flow methane tank, whose body is a vertical cylindrical reinforced concrete structure, with the bottom center ridged. There is a partition between the center of the ridge and the stock level of the methane tank, separating the tank into a left and a right chamber; a sand discharge port is opened at the bottom of the left chamber and connected to a sand setting tank via a sand discharge pipe; a feed port is opened at a certain distance above the sand discharge pipe and a feed pipe from the feed port is connected to a vacuum pressure tank. A suction pipe of this tank is connected to the lower part of a storage basin; a slag discharge port is opened in the lower part of the right chamber and connected to a methane slag overflow pipe. The pipe goes upward and back to the methane slag basin; a Roots fan is connected to the vacuum pressure tank via a pipe and a control valve; a steam heating tube is provided in the methane tank. This device is charged in the vacuum state to increase feed concentration and production efficiency. A partition wall is provided to bring the stock into a dynamic and orderly cycle, so that methane slag in the upper part will not clog or be short-circuited.

Description

The high concentration baffling type methane-generating pit

Technical field: the utility model relates to a kind of high density methane-generating pit in bioenergy field, is a kind of high concentration baffling type methane-generating pit specifically.

Background technology: present large methane tank structurally has two kinds, and a kind of is last overflow and slag; A kind of is the lower section type deslagging, all adopts wet zymotechnique, only operation about 6% of material concentration, and charging adopts pump to squeeze into.The shortcoming that exists is that material concentration is low, causes production efficiency low; Material flow is uncertain, causes the material short circuit easily; The material top is in static state, causes the knot lid easily; Defectives such as row's sand is difficult, fermentation is incomplete are arranged.

Summary of the invention: the purpose of this utility model is to provide a kind of high concentration baffling type methane-generating pit, and this methane-generating pit can make material concentration improve more than 1 times, adopts the charging of vacuum pressure device, and the efficiency ratio prior art improves more than 2 times; Material flow is stable, not short circuit, does not tie lid, long-pending sand, production efficiency height.

The technical solution of the utility model is as follows:

The main body of this methane-generating pit is the vertical and cylindrical skeleton construction, the bottom on flat in the middle of backing be divided into two slopes, the ratio of slope is 1: 3--5; To methane-generating pit material liquid level position one concrete partition wall is arranged in the middle of the backing, methane-generating pit is divided equally be left chamber and right ventricle; A sediment ejection opening is opened in bottom in chamber, a pond charging left side, and the sand tube that runs in is to the sandstone settling tank; Opening opening for feed than the high position of set a distance of giving of row's sand tube, the feed-pipe that it picks out connects the vacuum pressure jar, and the material sucking pipes of vacuum pressure jar feeds the bottom of material storage container; Have slag notch below the methane-generating pit right ventricle, the external natural pond of slag notch slag upflow tube returns the water colunm height sum that highly is greater than divider wall height and biogas pressure in the pond on the upflow tube, return in the slag bath of natural pond down again after returning on the upflow tube; Roots blower connects the vacuum pressure jar through pipeline and control valve, and the vacuum and the pressure program that need are controlled by valve, and methane outlet is arranged at the top of methane-generating pit, is provided with steam heating tube in the methane-generating pit.

Above-mentioned upflow tube divides two-way, and one the tunnel returns down in the slag bath of natural pond after returning on above-mentioned again, and another road directly feeds the natural pond slag bath through valve.

Above-mentioned heating tube inserts methane-generating pit chamber, a left side and right ventricle respectively, valve segmentation control is arranged so that temperature regulation.

Advantage of the present utility model is: 1, adopt the charging of vacuum pressure device, input concentration is reached more than 12%, production efficiency improves more than 2 times than prior art.2, establishes divider wall in the middle of the methane-generating pit, make material form a dynamic and orderly flow process, can guarantee that dynamically natural pond, top slag do not tie lid; Flow process can guarantee that material is not short-circuited in order.3, the bottom be provided with inclined-plane, sand discharge apparatus and feed chamber bottom can impel long-pending husky, thereby convenient row is husky; 4, charging raising certain altitude can make virgin material be able to the cloth bacterium, promotes fermenting speed.5, returning greater than controlling level in the methane-generating pit and the pond high sum of internal gas pressure water column on the residue outlet is in order to guarantee the height of liquid level in the pond.6, establishing heating tube is to reach the mesophilic digestion temperature in order to control methane-generating pit, so that enhance productivity.

Description of drawings: Fig. 1 is the utility model one-piece construction diagrammatic cross-section.

Embodiment: the utility model is described in further detail below in conjunction with accompanying drawing.

Can see structure of the present utility model by Fig. 1, the main body of this methane-generating pit is vertical and cylindrical 18 skeleton constructions, the bottom on flat in the middle of backing 17 be divided into two slopes, the ratio of slope is 1: 4; In the middle of backing, one concrete partition wall 9 is arranged, methane-generating pit is divided into left chamber and right ventricle to methane-generating pit material liquid level position; 1 is chamber, a methane-generating pit left side, and 12 is the methane-generating pit right ventricle, opens the sand tube 7 that runs in outside the sediment ejection opening in the feed chamber bottom in pond, and regularly row is husky; The external vacuum pressure jar 5 in position, 1 meter left and right sides above row's sand tube, this pressure-pot connects feed-pipe 6; Below the material-output tank of methane-generating pit, have slag notch, the external natural pond of slag notch slag upflow tube 13, return the water colunm height sum of height on the upflow tube greater than biogas pressure in divider wall height and the pond in the pond, upflow tube returns down and inserts natural pond slag bath 15 then, and another road 19 of upflow tube directly feeds the natural pond slag bath through valve; Roots blower 3 connects the vacuum pressure jar through vacuum pressure variable valve 4, and the following of vacuum pressure jar is feed reservoir 2, and material sucking pipes 16 feeds the vacuum pressure jar by feed reservoir, and methane outlet 11 is arranged at the top of methane-generating pit, has heating tube 8 to feed methane-generating pit; 14 is the thermal insulation layer of methane-generating pit; 10 is the material level line.

Vacuumizing with roots blower earlier enters in the jar material, close feed valve then and open bleeder valve, utilize the pressure of roots blower that a jar interior material is pressed in the methane-generating pit again, this feeding manner can be pumped the material of solid content 12--15% concentration range, makes methane-generating pit production efficiency improve more than 2 times.

Claims

1, a kind of high concentration baffling type methane-generating pit is characterized in that: its main body is vertical and cylindrical (a 18) skeleton construction, the bottom on flat in the middle of backing (17), be divided into two slopes, the ratio of slope is 1: 3--5; To methane-generating pit material liquid level position one concrete partition wall (9) is arranged in the middle of the backing, methane-generating pit is divided equally be left chamber (1) and right ventricle (12); A sediment ejection opening is opened in bottom in chamber, a pond charging left side, and the sand tube that runs in (7) is to sandstone settling tank (2); Opening opening for feed than the high position of set a distance of giving of row's sand tube, the feed-pipe that it picks out (6) connects vacuum pressure jar (5), and the material sucking pipes of vacuum pressure jar (16) feeds the bottom of material storage container; Have slag notch below the methane-generating pit right ventricle, the external natural pond of slag notch slag upflow tube (13) returns the water colunm height sum that highly is greater than divider wall height and biogas pressure in the pond on the upflow tube, return in the natural pond slag bath (15) down after returning on the upflow tube; Roots blower (3) connects vacuum pressure jar (5) through pipeline and control valve (4); Methane outlet (11) is arranged at the top of methane-generating pit, is provided with steam heating tube (8) in the methane-generating pit.

2, high concentration baffling type methane-generating pit according to claim 1, it is characterized in that: its upflow tube divides two-way, and one the tunnel (13) returns down in the slag bath of natural pond after returning on above-mentioned again, and another road (19) directly feed natural pond slag bath (15) through valve.

3, high concentration baffling type methane-generating pit according to claim 1 is characterized in that: its heating tube (8) inserts methane-generating pit chamber (1), a left side and right ventricle (12) respectively.