WO2021245444A1

WO2021245444A1 - Integrated sludge pulping and hydrolyzing equipment

Info

Publication number: WO2021245444A1
Application number: PCT/IB2020/055262
Authority: WO
Inventors: Ju Ying DAI
Original assignee: Newway Technologies Ltd.
Priority date: 2020-06-04
Filing date: 2020-06-04
Publication date: 2021-12-09
Also published as: CA3090282C; CN114026047A; CN114026047B; CA3090282A1

Abstract

The invention discloses an integrated sludge pulping and hydrolyzing equipment, comprising a cold sludge cavity into which the cold sludge to be treated is delivered; a hot sludge cavity into which the sludge treated by the cold sludge cavity enters; wherein a sleeve-type wrapping structure is applied between the cold sludge cavity and the hot sludge cavity, and heat exchange is conducted to pulp and hydrolyze the sludge between the cold sludge cavity and the hot sludge cavity. The equipment provided by the present invention is simple in structure principle, small in floor space, high in treatment efficiency and good in treatment effect.

Description

INTEGRATED SLUDGE PULPING AND HYDROLYZING

EQUIPMENT

Technical Field

[1] The present invention mainly relates to a sludge treatment system, in particular to an integrated sludge pulping and hydrolyzing equipment capable of treating sludge in a continuous, efficient and low energy consumption mode.

Background Art

[2] With the rapid development of economy and the continuous improvement of living standard, people have increasingly higher environmental awareness and environment quality requirements. For this reason, more and more waste water need to be treated.

[3] In the past decades, there has been a great progress in the sewage treatment technology. However, massive sludge "overstocked" is not disposed reasonably and safely due to severe "preferring sewage to sludge" during the construction of the sewage treatment plant. Hence, relative to the more mature sewage treatment technology, the sludge treatment and disposal technology is still in the stage to be urgently improved and optimized and develops slowly. Massive sludge will be produced when a large amount of urban domestic and industrial sewage is collected and treated. Therefore, how to reasonably dispose the sludge from the sewage treatment plant is a very urgent task to effectively solve the urban sludge problem.

[4] The by-product of the urban drainage system involves urban sludge having such properties as large capacity, instability, corruptibility and foul smell. It is composed of numerous cellular organic matters which are protected by cells consisting of cellulose and peptidoglycan, and intracellular moisture and organic matters are uneasily separated and hydrolyzed, so that the sludge is dehydrated difficultly or its cost for reaching the dehydration standard is excessive. At present, more sludge treatment methods and devices have been developed in the market to solve the problems of excessive chemical additive cost or complicated treatment technology in sludge treatment. A large number of literature and project cases indicate that a sludge thermohydrolysis method is an effective way to treat the sludge. There are many sludge treatment technologies derived by a thermohydrolysis reaction mechanism.

[5] The existing sludge, treated by the current thermohydrolysis technology, can conform to sludge wall breaking and subsequent further treatment demands, but the current common thermohydrolysis technology in the market has the following defects:

1. The process system equipment is complicated, including a plurality of equipment with different functions such as pulping, hydrolysis, flash evaporation and cooling, and multiple supporting power equipment. Hence, the whole process technology control is difficult, the floor area is large and the investment is high.

[6] 2. Moreover, its heat recycled after hydrolysis is not utilized fully, and the entire energy consumption of the system is high.

Summary of Invention

[7] The technical problem to be solved by the present invention lies in that, for the purpose of solving the defects in the prior art better, the present invention provides an integrated sludge pulping and hydrolyzing equipment which is simple in structure principle, small in floor space, high in treatment efficiency and good in treatment effect.

[8] In order to solve the above technical problem, the following technical solution is applied in the present invention:

An Integrated sludge pulping and hydrolyzing equipment, comprising: a cold sludge cavity into which the cold sludge to be treated is delivered; a hot sludge cavity into which the sludge treated by the cold sludge cavity enters; wherein a sleeve-type wrapping structure is applied between the cold sludge cavity and the hot sludge cavity, and heat exchange is conducted to pulp and hydrolyze the sludge between the cold sludge cavity and the hot sludge cavity.

[9] As a further improvement of the present invention: the cold sludge cavity is wrapped outside the hot sludge cavity; or the hot sludge cavity is wrapped outside the cold sludge cavity.

[10] As a further improvement of the present invention: cold cavity agitation mechanisms are provided in the cold sludge cavity to agitate the cold sludge in the cold sludge cavity to improve sludge mobility.

[11] As a further improvement of the present invention: hot cavity agitation mechanisms are provided in the hot sludge cavity to agitate hot sludge in the hot sludge cavity to improve sludge mobility.

[12] As a further improvement of the present invention: the cold sludge cavity is divided into more than two independent cold sludge chambers, and the adjacent independent cold sludge chambers are communicated to form a cold sludge flow channel through a first pipe or a hole.

[13] As a further improvement of the present invention: each independent cold sludge chamber is provided with the cold cavity agitation mechanism.

[14] As a further improvement of the present invention: each independent cold sludge chamber is provided with a cold cavity temperature control device used for separately controlling temperature therein.

[15] As a further improvement of the present invention: all the independent cold sludge chambers have the same volume.

[16] As a further improvement of the present invention: the hot sludge cavity is divided into more than two independent hot sludge chambers, and the adjacent independent hot sludge chambers are communicated to form a hot sludge flowing channel through a second pipe or a hole.

[17] As a further improvement of the present invention: each independent hot sludge chamber is provided with the hot cavity agitation mechanism.

[18] As a further improvement of the present invention: each independent hot sludge chamber is provided with a hot cavity temperature control device used for separately controlling the temperature therein.

[19] As a further improvement of the present invention: the equipment further comprises a steam pipe, wherein the steam pipe is used for feeding hot steam into a communication place between the cold sludge cavity and the hot sludge cavity.

[20] As a further improvement of the present invention: the cold sludge cavity and the hot sludge cavity are arranged vertically or horizontally. [21] As a further improvement of the present invention: the equipment further comprises a homogenization component used for realizing homogeneous adjustment and cooling treatment after the sludge is hydrolyzed; the homogenization component further comprises a homogenization chamber used for connecting the hot sludge cavity to deliver the sludge discharged from the hot sludge cavity to the homogenization chamber; a sludge agitation mechanism, used for agitating the sludge in the homogenization chamber; a plurality of air pipes, which lead to the top from the bottom of the homogenization chamber, but are not in contact with a medium in the homogenization chamber directly; a fan, disposed at a top end to lead gas in the air pipes to flow upwards.

[22] As a further improvement of the present invention: the equipment further comprises a homogenization component used for realizing homogeneous adjustment and cooling treatment after the sludge is hydrolyzed; the homogenization component further comprises a homogenization chamber used for connecting the hot sludge cavity to deliver the sludge discharged from the hot sludge cavity to the homogenization chamber; a sludge agitation mechanism, used for agitating the sludge in the homogenization chamber; a plurality of air pipes, which lead to the top from the bottom of the homogenization chamber, but are not in contact with a medium in the homogenization chamber directly; a vacuum pump, disposed at a top end to extract gas above the homogenization component to form a vacuum negative pressure zone, so that water is boiled to generate moisture to take away heat, thereby constantly cooling the sludge in the homogenization chamber.

[23] As a further improvement of the present invention: the top of the equipment is further provided with an exhaust hole used for releasing pressure and exhausting exhaust gas.

[24] Compared with the prior art, the present invention has the following advantages:

1. The integrated sludge pulping and hydrolyzing equipment provided by the present invention is driven and controlled to operate by feeding equipment, and the system equipment can be controlled to feed and discharge by timing and quantitative feeding of the feeding equipment.

[25] 2. The integrated sludge pulping and hydrolyzing equipment provided by the present invention includes inner and outer layers of the pulping/hydrolyzing layers with the same volume. The inner layer is divided into a plurality of layers which are mutually separated and have the same volume. But the pulping/hydrolyzing layers, which are communicated upwards one by one in a specific way, are in structurally designed based on the sleeve heat exchange principle. Heat from sludge hydrolysis can be fully absorbed by inner/outer jacket layers and auxiliary agitation device when the sludge is fed, so that the whole heat consumption is reduced; and meanwhile the inner/outer sleeve structure is applied to the equipment, so that the system thereof is more compact integrally and is controlled easier, and the fault rate is rather lower.

[26] 3. The integrated sludge pulping and hydrolyzing equipment provided by the present invention includes a special auxiliary agitation device and a steam heating pipe, the agitation device is inserted between the inner and outer layers at 90° from the sides of middle line points at different heights, and the steam pipe is inserted into the central area from the bottom center line of a hydrolysis layer, so that sludge can be heated quickly.

[27] 4. The integrated sludge pulping and hydrolyzing equipment provided by the present invention includes agitation equipment homogenously agitating the sludge from the side, and further comprises the air pipes leading to the top from the bottom of the unit but not in contact with the medium in the unit directly, and the fan for leading the air in the air pipes to flow upwards at the top of the equipment. Therefore, cooling or modified treatment can be further realized after the sludge is hydrolyzed.

[28] 5. A filtrate, produced by the integrated sludge pulping and hydrolyzing equipment provided by the present invention after filter pressing, can be recycled to the front end, so as to further save system resource consumption. [29] To sum up, the equipment provided by the present invention has the advantages that the sludge treatment system is simple in structure, convenient to operate and control and low in comprehensive energy consumption

Brief Description of Drawings

[30] Fig.1 illustrates a structural schematic diagram of applying a hot inside cold structure in Embodiment 1 of the present invention.

[31] Fig. 2 illustrates a structural schematic diagram of applying a hot inside cold structure in Embodiment 1 of the present invention.

[32] Fig. 3 illustrates a structural schematic diagram of applying vacuum water- cooled homogenization in Embodiment 1 of the present invention.

[33] Fig. 4 illustrates a structural schematic diagram of applying air-cooled homogenization in Embodiment 1 of the present invention.

[34] Fig. 5 illustrates a structural schematic diagram of applying a cold inside hot structure in Embodiment 2 of the present invention.

[35] Fig. 6 illustrates a structural schematic diagram of applying a cold inside hot structure in Embodiment 2 of the present invention.

[36] Fig. 7 illustrates a structural schematic diagram of applying vacuum water- cooled homogenization in Embodiment 2 of the present invention.

[37] Fig. 8 illustrates a structural schematic diagram of applying air-cooled homogenization in Embodiment 2 of the present invention.

[38] Fig. 9 illustrates a structural schematic diagram of applying a hot inside cold structure in Embodiment 3 of the present invention.

[39] Fig. 10 illustrates a structural schematic diagram of applying vacuum water- cooled homogenization in Embodiment 3 of the present invention.

[40] Fig. 11 illustrates a structural schematic diagram of applying air-cooled homogenization in Embodiment 3 of the present invention.

Description of Embodiments

[41] The present invention will be further clarified based on the following figures and embodiments. [42] Embodiment 1 : As shown in Figs. 1-4, an integrated sludge pulping and hydrolyzing equipment provided by the present invention, comprising: a cold sludge cavity 1 into which the cold sludge to be treated is delivered, wherein the cold sludge includes civil sludge and other kinds of organic sludge; a hot sludge cavity 2 into which the sludge treated by the cold sludge cavity 1 enters; wherein a sleeve-type wrapping structure is applied between the cold sludge cavity 1 and the hot sludge cavity 2, and heat exchange is conducted to pulp and hydrolyze the sludge between the cold sludge cavity 1 and the hot sludge cavity 2.

[43] In this embodiment, the cold sludge cavity 1 is wrapped outside the hot sludge cavity 2. The cold sludge to be treated is delivered to the cold sludge cavity 1 , and then the sludge delivered from the cold sludge cavity 1 is delivered to the hot sludge cavity 2. The hot sludge cavity 2 is used for heat exchange with the cold sludge cavity 1 , that is, the cold sludge cavity 1 absorbs heat from the hot sludge cavity 2 wrapped therein, so that the temperature of the cold sludge raises while the heat of the hot sludge is recycled. After the heat of the hot sludge in the hot sludge cavity 2 is absorbed by the cold sludge cavity 1 gradually, proper temperature required by a back-end process can be lowered, cooling mechanisms can be decreased in the traditional treatment equipment, the overall system efficiency can be improved and system energy consumption can be reduced.

[44] In this embodiment, the cold sludge cavity 1 can be further separated into more than two independent cold sludge chambers 107 by cold sludge layer separators 103, and the adjacent independent cold sludge chambers 107 are communicated to form a cold sludge flowing channel through a first pipe 106 or a hole. Therefore, the sludge to be treated in the cold sludge cavity 1 is delivered through a cold sludge cavity inlet 101 , hydrolyzed in a communication area between the cold sludge cavity 1 and the hot sludge cavity 2 after passing through a plurality of independent cold sludge chambers 107 one by one, and then delivered to the hot sludge cavity 2 from a hot sludge cavity inlet 105.

[45] In a preferred embodiment, each independent cold sludge chamber 107 is further internally provided with a temperature control device, for instance, a cold sludge temperature control device 108, in this embodiment, is used for separately controlling the temperature in each independent cold sludge chamber 107, so that it can be ensured to meet the sludge treatment process requirements within a proper temperature range.

[46] In a preferred embodiment, the cold sludge cavity 1 is internally provided with cold cavity agitation mechanisms, for instance, a cold sludge cavity agitator 102, in this embodiment, is used for agitating the cold sludge in the cold sludge cavity 1 to reach the consistent preferred temperature and to reach the preferred pulping thermohydrolysis effect in a flowing circulation state. If a plurality of independent cold sludge chambers 107 are applied structurally, one cold cavity agitation mechanism can be further provided in each independent cold sludge chamber 107. The structure of each cold cavity agitation mechanism can be selected according to the actual demands, such as mechanical agitator, spiral agitator and hydraulic agitator. As long as the function of agitating the sludge can be met, this should be within the protection scope of the present invention.

[47] In a preferred embodiment, with a vertical arrangement method in the cold sludge cavity 1 , the cold sludge moves from bottom to top after entering the cold sludge cavity 1 and then is heated gradually to finish pulping and thermohydrolysis. It can be understood that, in other embodiments, a horizontal arrangement method can be applied to meeting the sludge flowing demand only, which should be within the protection scope of the present invention.

[48] In a specific application instance, the hot sludge cavity 2 can be further internally separated into more than two independent hot sludge chambers 206 through the hot sludge layer separators 204, and the adjacent independent hot sludge chambers 206 are communicated to form a hot sludge flowing channel through a second pipe 202 or a hole. Thus, the sludge in the hot sludge cavity 2 is delivered through the hot sludge cavity inlet 105, and then discharged from a hot sludge outlet 203 after passing through the plurality of independent hot sludge chambers 206 one by one.

[49] In a preferred embodiment, each independent hot sludge chamber 206 is internally provided with the hot sludge temperature control device 205 to separately control the temperature within each independent hot sludge chamber 206, so as to ensure it within a proper temperature range.

[50] In a preferred embodiment, the hot sludge cavity 2 is internally provided with the hot cavity agitation mechanisms, for instance, the hot cavity agitator 201 , in this embodiment, is used for agitating the cold sludge in the hot sludge cavity 2 to reach the preferred consistent temperature. If the plurality of independent hot sludge chambers 206 are applied, one hot cavity agitation mechanism can be further arranged in each independent hot sludge chamber 206. The structure of each hot cavity agitation mechanism can be selected according to the actual demands, such as mechanical agitator, spiral agitator and hydraulic agitator, all of which can meet the function of agitating the sludge. This should be within the protection scope of the present invention.

[51 ] In this embodiment, the equipment further comprises a steam pipe 104, and the steam pipe 104 is used for feeding hot steam into a communication place between the cold sludge cavity 1 and the hot sludge cavity 2. The sludge can be heated to finish thermohydrolysis by hot steam.

[52] The cold sludge cavity 1 and the hot sludge cavity 2 are arranged vertically.

[53] In a specific application, the above structure operating flow of the present invention is as follows: the cold sludge (20-30°C) enters from the cold sludge cavity inlet 101 continuously or in batches under an action of the sludge pump 7 at a front end of the integrated pulping and hydrolyzing equipment, and absorbs heat to realize uniform mixing and heat exchange in the cavity when the cold sludge cavity agitator 102 agitates at one side, and the heat absorbed thereof is from the hot sludge in the hot sludge cavity 2 on a corresponding contact surface.

[54] Under the actions of the sludge pump 7 and the cold sludge temperature control device 108, the sludge flows to a next chamber toward the same direction from the hole or the first pipe 106 of the separator 103 in each chamber; under the continuous sludge heat exchange between all chambers of the cold sludge cavity 1 and the hot sludge cavity 2 at the corresponding position, the sludge absorbs the heat from the hot sludge in the hot sludge cavity 2 gradually, and then heats to a certain temperature (for instance, 70-90°C) for sludge pulping.

[55] Under an action of the sludge pump 7, the pulped sludge flows continuously to a communication area between the cold sludge cavity 1 and the hot sludge cavity 2. In this area, the cold sludge cavity agitator 102 at one side agitates the sludge constantly, and the external steam enters from the steam pipe 104 to rapidly heat the sludge to the high temperature (for instance, 100-170°C) to finish sludge hydrolysis.

[56] Under an action of the sludge pump 7, the hydrolyzed sludge enters the hot sludge cavity 2 from the hot sludge cavity inlet 105, agitated constantly by the lateral hot sludge cavity agitator 201 inside the hot sludge cavity 2, so that the sludge flows constantly in the chambers of the hot sludge cavity 2 to realize homogenous mixing and heat exchange, and heat released thereof is absorbed by the cold sludge in the cold sludge cavity 1 on a corresponding contact surface.

[57] Under the actions of the sludge pump 7 and the hot sludge temperature control device 205, the hydrolyzed sludge flows toward the same direction constantly to conduct heat exchange with the sludge in the cold sludge cavity 1 at the corresponding place in all places of the hot sludge cavity 2 till the temperature is lowered gradually.

[58] Under an action of the sludge pump 7, the hot sludge, the waste heat of which is fully absorbed, is drained to a next process from the hot sludge outlet 203. Up to this point, the sludge is pulped and hydrolyzed.

[59] In a specific application instance, an outer shell is further provided outside the hot sludge cavity 2 and defines an equipment outer wall. Thus, a sleeve structure is formed by the cold sludge cavity 1 , the hot sludge cavity 2 and the outer shell.

[60] In a specific application instance, the cold cavity agitation mechanisms and the hot cavity agitation mechanisms are inserted into the cold sludge cavity 1 and the hot sludge cavity 2 at 90° from the sides of the middle line points at different heights, and the steam pipe 104 is inserted into a central area from the bottom center line of a hydrolysis layer.

[61] It can be understood that the shapes of the cold sludge cavity 1 , the hot sludge cavity 2 and the outer shell can be selected based on the actual demands, for instance cylindrical shape, square tube shape. Selection can be made to conform to agitation and heat exchange demands based on the actual demands, which should be within the protection scope of the present invention. [62] It can be understood that the volumes of more than two independent cold sludge chambers 107 in the cold sludge cavity 1 can be the same or different. In a similar way, so do more than two independent hot sludge chambers 206 in the hot sludge cavity 2.

[63] Through the above equipment provided by the present invention, the energy consumption can be reduced in the hydrolysis process when the fed sludge is pulped and hydrolyzed continuously; and meanwhile, the auxiliary agitation device can play a role in fully mixing and accelerating heat exchange.

[64] Furthermore, as a preferred embodiment, the integrated equipment provided by the present invention further comprises a homogenization component 3, the homogenization component 3 can be used for realizing homogeneous adjustment and cooling treatment by means of air cooling after the sludge is hydrolyzed; the homogenization component 3 further comprises a homogenization chamber used for connecting the hot sludge cavity 2 to deliver the sludge discharged from the hot sludge cavity 2 to the homogenization chamber; a sludge agitation mechanism 301, used for agitating the sludge in the homogenization chamber; a plurality of air pipes 302, which lead to the top from the bottom of the homogenization chamber, but are not in contact with a medium in the homogenization chamber directly; a fan 303, disposed at a top end to lead gas in the air pipes 302 to flow upwards.

[65] It can be understood that, in other embodiments, the homogenization component 3 can be cooled to homogeneously adjust and cool the hydrolyzed sludge by means of evaporating steam to cool under vacuum negative pressure; the homogenization component 3 further comprises a homogenization chamber used for connecting the hot sludge cavity 2 to deliver the sludge discharged from the hot sludge cavity 2 to the homogenization chamber; a sludge agitation mechanism 301, used for agitating the sludge in the homogenization chamber from the inlet 401 ; a plurality of air pipes 304, which lead to the top from the bottom of the homogenization chamber, but are not in contact with the medium in the homogenization chamber directly; a vacuum pump 305, disposed at a top end to extract gas above the homogenization component 3 to form a vacuum negative pressure zone, so that water is boiled to generate moisture to take away heat, thereby constantly cooling the sludge in the homogenization chamber; a water storage tank 306, used for supplementing water in the water pipe 304.

[66] Embodiment 2: As shown in Figs. 5-8, differs from Embodiment 1 in that the hot sludge cavity 2 is wrapped outside the cold sludge cavity 1 in this embodiment. The cold sludge to be treated is delivered to the cold sludge cavity 1 , and then the sludge delivered from the cold sludge cavity 1 is delivered to the hot sludge cavity 2. The hot sludge cavity 2 is used for heat exchange with the cold sludge cavity 1 , that is, the cold sludge cavity 1 absorbs heat from the hot sludge cavity 2 wrapped outside. After the heat of the hot sludge in the hot sludge cavity 2 is absorbed by the cold sludge cavity 1 gradually, proper temperature required by a back-end process can be lowered, cooling mechanisms can be decreased in the traditional treatment equipment, the overall system efficiency can be improved, and system energy consumption can be reduced.

[67] In this embodiment, the hot sludge cavity 2 and the cold sludge cavity 1 , like Embodiment 1 , can be designed to be divided into independent chambers, and additionally provided with the agitation mechanisms, the temperature control components and the homogenization components, with the same essential functions and theories as that in Embodiment 1 , which is not repeated in details here.

[68] In a specific application, the above structure operating flow of the present invention is as follows:

The cold sludge (20-30°C) enters from the cold sludge cavity inlet 101 continuously or in batches under an action of the sludge pump 7 at a front end of the integrated pulping and hydrolyzing equipment, and absorbs heat to realize homogeneous mixing and heat exchange in the chambers when the cold sludge cavity agitator 102 agitates at one side, and the heat absorbed thereof is from the hot sludge in the hot sludge cavity 2 on a corresponding contact surface.

[69] Under the actions of the sludge pump 7 and the cold sludge temperature control device 108, the sludge flows toward the same direction to conduct heat exchange between all places of the cold sludge cavity 1 and hot sludge in the chambers of the hot sludge cavity 2 at the corresponding position, so that the cold sludge absorbs the waste heat from the hot sludge cavity 2 gradually to heat to a certain temperature (for instance, 80-90°C) to finish sludge pulping.

[70] Under an action of the sludge pump 7, the pulped sludge flows continuously to a communication area between the cold sludge cavity 1 and the hot sludge cavity 2. In this area, the cold sludge cavity agitator 102 at one side agitates the sludge constantly, and the external steam enters from the steam pipe 104 to rapidly heat the sludge to a certain temperature (for instance, 100-170°C) to finish sludge hydrolysis.

[71] Under an action of the sludge pump 7, the hydrolyzed sludge is discharged to the hot sludge cavity 2, and then agitated constantly by the lateral hot sludge cavity agitator 201 in the hot sludge cavity 2, so that the sludge flows constantly in the chambers of the hot sludge cavity 2 to realize homogeneous mixing and heat exchange, and heat released thereof is absorbed by the cold sludge in the cold sludge cavity 1 on a corresponding contact surface.

[72] Under the actions of the sludge pump 7 and the hot sludge temperature control device 205, the hydrolyzed sludge flows to a next chamber through the holes or the pipes of the hot sludge layer separator 204 toward the same direction constantly, so as to conduct heat exchange with the sludge in the chambers of the cold sludge cavity 1 at the corresponding place constantly in all chambers of the hot sludge cavity 2 till the temperature is gradually lowered to a certain temperature (for instance 60-70°C) .

[73] Under an action of the sludge pump 7, the hot sludge, the waste heat of which is fully absorbed, is drained to a next process from the hot sludge outlet 203. Up to this point, the sludge is pulped and hydrolyzed.

[74] Embodiment 3: As shown in Figs. 9-11 , the cold sludge cavity 1 is structurally wrapped by the hot sludge cavity 2 in this embodiment, the basic structure and process routes thereof are the same as those in Embodiment 2 essentially.

These differences lie in that a plurality of communication pipes insert into the middle of the cold sludge cavity 1 disposed vertically from up to bottom, and are used for passing through the sludge in the hot sludge cavity 2 only, but not mixing the sludge in the cold sludge cavity 1. Furthermore, the place, corresponding to the communication pipe, in the hot sludge cavity 2, is internally provided with an inner circulating agitation device, and the suction or propelling effect can be produced by the hot circulating agitation device, thereby finishing flow of the hot sludge in the communication pipe. Therefore, the heat exchange capacity can be greatly enhanced, and the heat exchange soaking effect can be improved, and the integral equipment treatment effect can be greatly improved.

[75] The above are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the embodiment mentioned above. The technical solutions under the ideas of the present invention fall into the protection scope of the present invention. It should be pointed out that, for an ordinary person skilled in the art, some improvements and modifications without departing from the principle of the present invention should be deemed as the protection scope of the present invention.

Claims

[Claim 1] An Integrated sludge pulping and hydrolyzing equipment, comprising : a cold sludge cavity into which the cold sludge to be treated is delivered; a hot sludge cavity into which the sludge treated by the cold sludge cavity enters; wherein a sleeve-type wrapping structure is applied between the cold sludge cavity and the hot sludge cavity, and heat exchange is conducted to pulp and hydrolyze the sludge between the cold sludge cavity and the hot sludge cavity.

[Claim 2] The equipment of claim 1 , wherein the cold sludge cavity is wrapped outside the hot sludge cavity; or the hot sludge cavity is wrapped outside the cold sludge cavity.

[Claim 3] The equipment of claim 1 or 2, wherein cold cavity agitation mechanisms are provided in the cold sludge cavity to agitate the cold sludge in the cold sludge cavity to improve sludge mobility.

[Claim 4] The equipment of claim 1 or 2, wherein hot cavity agitation mechanisms are provided in the hot sludge cavity to agitate hot sludge in the hot sludge cavity to improve sludge mobility.

[Claim 5] The equipment of claim 1 or 2, wherein the cold sludge cavity is divided into more than two independent cold sludge chambers, and the adjacent independent cold sludge chambers are communicated to form a cold sludge flow channel through a first pipe or a hole.

[Claim 6] The equipment of claim 5, wherein each independent cold sludge chamber is provided with the cold cavity agitation mechanism.

[Claim 7] The equipment of claim 5, wherein each independent cold sludge chamber is provided with a cold cavity temperature control device used for separately controlling temperature therein.

[Claim 8] The equipment of claim 5, wherein all the independent cold sludge chambers have the same volume.

[Claim 9] The equipment of claim 1 or 2, wherein the hot sludge cavity is divided into more than two independent hot sludge chambers, and the adjacent independent hot sludge chambers are communicated to form a hot sludge flowing channel through a second pipe or a hole.

[Claim 10] The equipment of claim 9, wherein each independent hot sludge chamber is provided with the hot cavity agitation mechanism.

[Claim 11] The equipment of claim 9, wherein each independent hot sludge chamber is provided with a hot cavity temperature control device used for separately controlling the temperature therein.

[Claim 12] The equipment of claim 1 or 2, wherein the equipment further comprises a steam pipe, wherein the steam pipe is used for feeding hot steam into a communication place between the cold sludge cavity and the hot sludge cavity.

[Claim 13] The equipment of claim 1 or 2, wherein the cold sludge cavity and the hot sludge cavity are arranged vertically or horizontally.

[Claim 14] The equipment of claim 1 or 2, wherein the equipment further comprises a homogenization component used for realizing homogeneous adjustment and cooling treatment after the sludge is hydrolyzed; the homogenization component further comprises a homogenization chamber used for connecting the hot sludge cavity to deliver the sludge discharged from the hot sludge cavity to the homogenization chamber; a sludge agitation mechanism, used for agitating the sludge in the homogenization chamber; a plurality of air pipes, which lead to the top from the bottom of the homogenization chamber, but are not in contact with a medium in the homogenization chamber directly; a fan, disposed at a top end to lead gas in the air pipes to flow upwards.

[Claim 15] The equipment of claim 1 or 2, wherein the equipment further comprises a homogenization component used for realizing homogeneous adjustment and cooling treatment after the sludge is hydrolyzed; the homogenization component further comprises a homogenization chamber used for connecting the hot sludge cavity to deliver the sludge discharged from the hot sludge cavity to the homogenization chamber; a sludge agitation mechanism, used for agitating the sludge in the homogenization chamber; a plurality of air pipes, which lead to the top from the bottom of the homogenization chamber, but are not in contact with a medium in the homogenization chamber directly; a vacuum pump, disposed at a top end to extract gas above the homogenization component to form a vacuum negative pressure zone.

[Claim 16] The equipment of claim 1 or 2, wherein the top of the equipment is further provided with an exhaust hole used for releasing pressure and exhausting exhaust gas.