CN212174779U

CN212174779U - Sludge back-mixing system for drying and carbonization

Info

Publication number: CN212174779U
Application number: CN202020467386.8U
Authority: CN
Inventors: 司恩良; 何光亚; 陈斌; 杨龙; 张焜; 熊霞; 闵飞虎; 查桥虎; 束华阳; 程涛
Original assignee: Anhui Tongyuan Environment Energy Saving Co Ltd
Current assignee: Anhui Tongyuan Environment Energy Saving Co Ltd
Priority date: 2020-04-02
Filing date: 2020-04-02
Publication date: 2020-12-18
Anticipated expiration: 2030-04-02

Abstract

The utility model provides a mummification is mud back-mixing system for carbomorphism, including storage unit, broken mixing arrangement, mummification equipment and the carbomorphism equipment that is linked together in proper order, storage unit is including the storehouse two that is used for saving the storehouse of pending mud and is used for saving the additive, the heat supply mouth of mummification equipment is linked together with the heat supply unit as main heat supply mouth with the heat supply mouth three of carbomorphism equipment, the heat supply mouth of mummification equipment is linked together as the heat extraction mouth of assisting heat supply mouth and carbomorphism equipment two, exhaust port one connection of mummification equipment has the exhaust-gas treatment unit, the exhaust port two of carbomorphism equipment is connected with pyrolysis gas purification device. The utility model discloses separately save pending mud and additive and simultaneously the ration is carried the broken mixing arrangement of mud and is carried the breakage and mix, has reduced moisture content, adhesion and the cohesiveness of mud, improves mud specific surface area, and resource cyclic utilization reduces the processing energy consumption, has improved sludge treatment efficiency.

Description

Sludge back-mixing system for drying and carbonization

Technical Field

The utility model relates to a sludge treatment technical field, concretely relates to mummification is mud back mixing system for carbomorphism.

Background

Research shows that the sludge shows remarkable adhesiveness and bonding property when the water content interval is 40-65%, the bonding shearing force of the sludge in the drying treatment process is larger than that of the adhesion shearing force, when the mechanical force applied to the sludge is large enough, the sludge can be firstly peeled off from a heat exchange surface, and when the mechanical force is further increased, the sludge can be further crushed, so that the crushing effect in the conventional sludge drying process is poor, the sludge particles are large, the specific surface area of the sludge is reduced, and the drying energy consumption is increased.

In the prior art, the caking property and the adhesion property of sludge are reduced by mixing the sludge and an additive together in a storage bin or a drying device provided with a stirring device, and the additive is dry substances such as dry sludge or rice hulls and the like, but the problems of uneven mixing, high stirring energy consumption and the like exist.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems of high sludge water content, high adhesiveness and cohesiveness, poor mixing effect of conventional additives and sludge and high mixing energy consumption in the prior art, a device system capable of solving the problems of adhesion and cohesiveness in the sludge drying process, reducing the treatment energy consumption and improving the sludge treatment efficiency is needed.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a sludge back-mixing system for drying and carbonization, which comprises a storage unit, a crushing and mixing device and a sludge back-mixing device which are sequentially communicated,

Mummification equipment and carbomorphism equipment, the storage unit is including the storage bin two that is used for saving pending mud and is used for saving the additive, the heat supply mouth of mummification equipment one and the heat supply mouth three of carbomorphism equipment are as leading heat supply mouth and heat supply unit and be linked together, the heat supply mouth of mummification equipment two is linked together as the heat extraction mouth of assisting heat supply mouth and carbomorphism equipment, exhaust port one of mummification equipment is connected with the exhaust-gas treatment unit, two connections of exhaust port of carbomorphism equipment have pyrolysis gas purifier.

Further, the first storage bin and the second storage bin can continuously convey the sludge and the additives to the crushing and mixing device quantitatively at the same time.

Preferably, the excess heat in the sludge carbonization process is taken as an auxiliary heat source and enters the drying equipment through the heat exhaust port and the heat supply port, the pyrolysis gas generated in the carbonization process is purified and then flows into the heat supply unit as supplementary fuel, and the tail gas of the drying equipment is treated by the waste gas treatment unit and then is discharged.

Preferably, the water content of the sludge to be treated is 40-80%.

Preferably, the additive is dried sludge, carbonized sludge or other materials with the water content of less than 20 percent

Any one of (1).

Preferably, the crushing mode of the crushing and mixing device is impact shear crushing, squeezing crushing and cutting crushing

One or more combinations of pieces.

According to the above technical scheme, the utility model discloses in separately storing pending mud and additive and the broken mixing arrangement of mud is carried to the ration simultaneously, make pending mud's moisture content reduce to below 40% through broken mixing, reduce the adhesion and the cohesiveness of mud, improve mud specific surface area, then go on mummification, carbomorphism again and handle, the resource can obtain cyclic utilization, has reduced the processing energy consumption, has improved sludge treatment efficiency.

Drawings

Fig. 1 is a schematic diagram of the system structure of the present invention.

In the figure: 11. a first storage bin; 12. a second storage bin; 2. a crushing and mixing device; 3. a drying apparatus; 31. for supplying to

A first hot port; 32. a second heat supply port; 33. a first exhaust port; 4. carbonizing equipment; 41. a third heat supply port; 42. a second exhaust port; 43. a heat exhaust port; 5. a heat supply unit; 6. an exhaust gas treatment unit; 7. and a pyrolysis gas purification unit.

Detailed Description

A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

The sludge back-mixing system for drying and carbonization as shown in figure 1 comprises a storage unit and a crushing unit which are communicated in sequence

Mixing arrangement 2, mummification equipment 3 and carbomorphism equipment 4, the storage unit is including the storage storehouse two 12 that are used for saving 11 of pending mud and are used for saving the additive, the heat supply mouth of mummification equipment 31 and the heat supply mouth three 41 of carbomorphism equipment are linked together as main heat supply mouth and heat supply unit 5, two 32 heat supply mouths of mummification equipment are linked together as the heat extraction mouth 43 of assisting heat supply mouth and carbomorphism equipment, the gas vent of mummification equipment is connected with exhaust-gas treatment unit 6, two connections of gas vent of carbomorphism equipment have pyrolysis gas purification unit 7.

The water content of the sludge to be treated in the preferred embodiment is 40-80%; the additive is dried sludge,

The method comprises the following steps of (1) adjusting the adding proportion of an additive according to the water content of the additive, the water content of sludge to be treated and the target water content after mixing, wherein the adding proportion of the additive is generally 20% -200%; the crushing mode of the crushing and mixing device is one or a combination of impact shearing crushing, extrusion crushing and cutting crushing.

When sludge is dried and carbonized, sludge to be treated with the water content of 40-80% is stored in a first storage bin, an additive is stored in a second storage bin, the discharge amount of the two materials is controlled by the discharge spiral speed, so that the sludge to be treated and the additive can be simultaneously and quantitatively conveyed to a sludge crushing and mixing device, and the sludge and the additive are crushed after being uniformly mixed, so that the water content of the sludge is reduced to below 40%; then the mixed sludge enters drying equipment and carbonization equipment in sequence to obtain a sludge drying product or a carbonization product.

In the preferred embodiment, the heat supply unit 5 firstly supplies heat to the carbonization device 4 to cause the sludge to be carbonized after pyrolysis reaction, and the redundant heat can be transmitted to the drying device 3 to be used as a heat source for drying the sludge; pyrolysis gas generated in the sludge carbonization process flows into the heat supply unit as supplementary fuel after being purified, and tail gas generated by the sludge drying device is discharged after being treated by the waste gas treatment unit 6; and the product of the sludge drying and carbonization can be stored in the second storage bin 12 as an additive for reuse. According to the above, the utility model discloses sludge treatment effect to moisture content height, adhesion and adhesion are big is showing, has effectively reduced the processing energy consumption of sludge drying, carbomorphism, has improved sludge treatment efficiency, can make resource cyclic utilization simultaneously, reduces harmful exhaust emissions, realizes cleanness, environmental protection operation.

The above-mentioned embodiments are only to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.

Claims

1. A sludge back-mixing system for drying and carbonization, which comprises a storage unit and a crushing and mixing device which are sequentially communicated

Put (2), drying equipment (3) and carbomorphism equipment (4), its characterized in that, the storage unit is including storage bin (11) that are used for saving pending mud and storage bin two (12) that are used for storing the additive, heating supply port one (31) of drying equipment and three (41) of heating supply port of carbomorphism equipment are linked together as main heating supply port and heating supply unit (5), heating supply port two (32) of drying equipment are linked together as heat extraction port (43) of assisting heating supply port and carbomorphism equipment, exhaust port one of drying equipment is connected with exhaust-gas treatment unit (6), exhaust port two of carbomorphism equipment are connected with pyrolysis gas purification device (7).

2. The sludge back-mixing system for drying and carbonization as claimed in claim 1, wherein the first storage bin (11) and the second storage bin (12) can continuously convey the sludge and the additive to the crushing and mixing device (2) quantitatively and simultaneously.

3. The sludge back-mixing system for drying and carbonization as claimed in claim 1, wherein the excess heat in the sludge carbonization process is used as an auxiliary heat source and flows into the drying device (3) through the heat discharging port (43) and the second heat supplying port (32), the pyrolysis gas generated in the carbonization process is purified and then flows into the heat supplying unit (5) as a supplementary fuel, and the tail gas of the drying device is discharged after being treated by the waste gas treating unit (6).

4. The sludge back-mixing system for drying and carbonization as claimed in claim 1, wherein the sludge back-mixing system is characterized in that

The water content of the sludge to be treated is 40-80%.

5. The sludge back-mixing system for drying and carbonization as claimed in claim 1, wherein the sludge back-mixing system is characterized in that

The additive is any one of dried sludge, carbonized sludge or other materials with the water content of less than 20 percent.

6. The sludge back-mixing system for drying and carbonization as claimed in claim 1, wherein the sludge back-mixing system is characterized in that

The crushing mode of the crushing and mixing device (2) is one or more of impact shearing crushing, squeezing crushing and cutting crushing.