CN217297631U

CN217297631U - Multi-return-stroke hydrothermal reactor

Info

Publication number: CN217297631U
Application number: CN202221459483.8U
Authority: CN
Inventors: 简振华; 范永信; 吴婉滢; 鲁凤英
Original assignee: Chengdu Ruiyun Environmental Technology Co ltd
Current assignee: Chengdu Ruiyun Environmental Technology Co ltd
Priority date: 2022-06-10
Filing date: 2022-06-10
Publication date: 2022-08-26
Anticipated expiration: 2032-06-10

Abstract

The utility model relates to the technical field of pyrohydrolysis equipment, and discloses a multi-return-stroke hydrothermal reactor, which comprises a container; a heating stirrer is arranged in the container, and a feed inlet and an air inlet are formed in the container; at least one layer of jacket is fixedly connected outside the container, the innermost layer of jacket is communicated with the container, and a discharge hole is formed in the outermost layer of jacket; the container and the jacket form a multi-return structure, the container is internally provided with a first process and is provided with a heating zone, and the flow outside the first process is provided with a reaction retention zone. Use the technical scheme of the utility model, the zone of heating, reaction stop zone have carried out the design of branch journey, have reduced the volume of the zone of heating, can show the equipment input and the operation power consumption that reduce mixing system, the cost is reduced. During the treatment of the sludge, the sludge is sequentially stirred and heated in a first process, and a second process and a third process (if any) are carried out in a reaction retention area; the sludge can stay for enough time in each return stroke, and the reaction time is sufficient; the sludge can achieve the effects of full reaction and complete reaction.

Description

Multi-return-stroke hydrothermal reactor

Technical Field

The utility model relates to a technical field is equipped in the pyrohydrolysis, especially relates to a many return strokes hydrothermal reactor.

Background

In recent years, the technology of sludge hydrothermal flash evaporation enhanced hydrolysis is continuously developed. The technology can disintegrate sludge particles, break cells, release organic matters of the cells and further hydrolyze; effectively improves the biological settleability and the dehydration of the sludge and simultaneously improves the biological degradation performance of the sludge and the liquid phase thereof.

Among them, the hydrothermal reactor plays an important role as a core device of the whole system. In the prior art, materials are heated and reacted in the same reaction kettle, so that the reactor needs larger volume to meet the requirements; meanwhile, the conditions of large investment and high power consumption of a stirring system are caused. In addition, what is more important is that a part of the sludge material which is just fed is not fully remained and directly flows to the outlet of the reactor in a short time; therefore, the actual reaction time of the sludge is less than the design time, and the reaction is not sufficiently effective.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a many return strokes hydrothermal reactor to solve among the prior art mud material reaction above-mentioned technical problem abundant inadequately.

In order to realize the purpose, the utility model discloses a technical scheme be:

a multi-pass hydrothermal reactor comprising a vessel; a heating stirrer is arranged in the container, and a feed inlet and an air inlet are formed in the container; at least one layer of jacket is fixedly connected outside the container, the innermost layer of jacket is communicated with the container, and the outermost layer of jacket is provided with a discharge hole; the container and the jacket form a multi-return structure, the container is internally provided with a first process and is provided with a heating zone, and the flow outside the first process is provided with a reaction retention zone.

Preferably, the number of the flow paths of the multi-return structure is set to be more than or equal to three, and the discharge port is positioned at the bottom of the outermost layer jacket.

Preferably, a plurality of annular and uniformly arranged communication ports are formed in the jacket between the 2 nth pass and the 2n +1 th pass, and the communication ports are positioned at the upper part of the jacket; wherein n is a positive integer.

Preferably, the volume ratio of the heating zone to the reaction residence zone in each pass is 1: 1.

preferably, the air inlet is connected with a pipeline and is exhausted from the bottom in the first pass; and a gas distribution device communicated with the gas inlet is fixed in the first process and is used for uniformly spraying steam into the container to be uniformly mixed with sludge.

Preferably, the container is provided with a process pipe orifice.

Preferably, the top of the container extends out of the jacket and is provided with a tank body flange for installation and maintenance.

Preferably, the outer wall of the outermost jacket is coated with a heat-insulating layer.

The utility model has the advantages that:

use the technical scheme of the utility model, the zone of heating, reaction stop zone have carried out the design of journey, have reduced the volume of the zone of heating greatly, can show the equipment input and the operation power consumption that reduce mixing system like this, the cost is reduced. During the treatment of the sludge, the sludge is sequentially stirred and heated in a first process, and a second process and a third process (if any) are carried out in a reaction retention area; the sludge can stay for enough time in each return stroke, and the reaction time is sufficient; the sludge can achieve the effects of full reaction and complete reaction.

Drawings

Fig. 1 is a schematic structural diagram of a first preferred embodiment of the present invention;

FIG. 2 is a schematic view (in cross-section) of the arrangement of the communication ports of FIG. one;

FIG. 3 is a schematic illustration of the spout of FIG. one with a removable cannula disposed therein;

FIG. 4 is a schematic view of the gas distribution device of FIG. I;

FIG. 5 is a schematic view of the arrangement of the air distribution holes in FIG. four;

reference numerals:

1-spare port, 2-liquid level meter port, 3-pressure meter port, 4-thermometer port, 5-exhaust port, 6-feed port, 7-air inlet, 8-safety valve port, 9-communicating port, 10-jacket, 11-pipeline, 12-second process, 13-heat insulation layer, 14-third process, 15-first process, 16-heating stirrer, 17-gas distribution device, 18-discharge port and 19-insertion pipe.

Detailed Description

The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.

Please refer to the attached drawings. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.

Example one

Referring to fig. 1-5, the present invention provides a multi-return hydrothermal reactor, which comprises a container; a heating stirrer 16 is arranged in the container, and a feed inlet 6 and an air inlet 7 are formed in the container; at least one layer of jacket 10 is fixedly connected outside the container, the innermost layer of jacket 10 is communicated with the container, and a discharge port 18 is formed in the outermost layer of jacket 10; the vessel and the jacket 10 are formed into a multi-pass structure, the first pass 15 is arranged in the vessel and is used as a heating zone, and the number of flow paths outside the first pass 15 is increased and is used as a reaction retention zone.

The multi-return-process hydrothermal reactor is further improved as follows:

as mentioned above, at least one layer of jacket 10 is fixedly connected outside the vessel, and the vessel and the jacket 10 are formed into a multi-pass structure. That is, when 1, 2, 3 … … n (where n is a positive integer) of jackets 10 are provided, the multi-pass hydrothermal reactor has 2, 3, 4 … … n +1 (where n is a positive integer) passes.

Specifically, when 2, 4, 6 … … 2n (where n is a positive integer) layers of the jackets 10 are provided, that is, when the jackets 10 are double; the multi-return-stroke hydrothermal reactor has 3, 5 and 7 … … 2n +1 (wherein n is a positive integer) return strokes; correspondingly, the multi-return-stroke hydrothermal reactor can be divided into a single return stroke such as three return strokes, five return strokes and seven return strokes. In this case, the multi-return hydrothermal reactor is formed as a single-return hydrothermal reactor. This is because, on the one hand, the discharge opening 18 is located at the bottom of the multi-pass hydrothermal reactor, facilitating the discharge. In addition, a plurality of annular and uniformly arranged communication ports 9 are formed in the jacket 10 between the 2 nth pass and the 2n +1 st pass, and the communication ports 9 are positioned at the upper part of the jacket 10; wherein n is a positive integer.

Wherein the first pass 15 serves as a heating zone and the remaining passes serve as reaction residence zones. The volume ratio of the heating zone to the reaction residence zone of each pass is 1: 1.

the container is provided with a process pipe orifice for monitoring the working condition of the multi-return-stroke hydrothermal reactor and keeping the pipe orifice for later use. The top of the container extends out of the jacket 10 and is provided with a tank body flange for installation and maintenance. The outer wall of the outermost jacket 10 is covered with a heat insulating layer 13.

In addition, in order to obtain a more reasonable sludge reaction time, the sludge reaction degree is better. The number of flows of the multi-pass structure is set to be three or more. In the following, a three-pass hydrothermal reactor is taken as an example for better understanding of the present invention.

The first process 15 is arranged in the container, and the second process 12 and the third process 14 are arranged outside the first process 15 in sequence. The volume of the three passes is divided into 1:1:1, namely 1/3 of the total volume of the heating zone and 2/3 of the total volume of the reaction residence zone. And a heat preservation measure is arranged on the outermost layer of the three-pass hydrothermal reactor. Meanwhile, a tank body flange is arranged in the first process 15 and is used as an installation access hole of the stirring heater and the container internal part. A heating stirrer 16 is arranged in the first process 15 and is used for mixing and heating the sludge and the steam. In addition, a first process 15 is arranged, wherein the top part is used for feeding, and the bottom part is used for discharging; second pass 12 bottom feed, top discharge. Specifically, instrument detection ports such as a liquid level meter port 2, a pressure meter port 3 and a temperature meter port 4 are arranged at the top of the first stroke 15, and process pipe ports such as a feed port 6, an air inlet 7 (namely a steam inlet port), an exhaust port 5, a safety valve port 8 and a standby port 1 are further arranged.

In order to avoid short flow of materials, the second process 12 is uniformly provided with 6 communicating ports 9 (as shown in figure 2) along the periphery of the cylinder wall; third pass 14 top feed, bottom discharge. Wherein, the bottom discharge hole 18 of the third pass 14 (i.e. the last pass) is provided with a large opening (over DN 150), so that the sediment deposited at the bottom can be cleaned conveniently; the discharge port 18 is matched with a detachable insertion pipe 19, the insertion pipe 19 is inserted into the flange port, and the insertion height is 30-50mm higher than that of the tank wall end socket, so that the abrasion of the discharge to the container body can be avoided. See in particular fig. 3.

As mentioned above, the single-pass hydrothermal reactor is provided for convenience of discharging, and the discharge port 18 is provided at the bottom of the outermost jacket 10. Of course, the discharge port 18 does not have to be located at the bottom of the outermost jacket 10 from a production point of view to perform the discharge operation. For example, the discharging can be carried out from the middle lower part and the middle upper part of the multi-return-process hydrothermal reactor.

The air inlet 7 can be designed to connect the pipeline 11 to the bottom air outlet in the first pass 15; and an air distribution device 17 communicated with the air inlet 7 is fixed in the first process 15, and the air distribution device 17 is used for uniformly spraying steam into the container to be uniformly mixed with sludge. The gas distribution device 17 is provided with a connecting pipe communicated with the pipeline 11, a sealing head is formed on the connecting pipe, and a plurality of uniformly distributed gas distribution holes are formed in the sealing head. The form of the air distribution device 17 is shown in fig. 4 and 5.

After the split-range design of the heating zone and the reaction retention zone, the volume of the heating zone is greatly reduced, so that the equipment investment and the running power consumption of a stirring system can be obviously reduced, and the cost is reduced. It should be noted that, in the conventional hydrothermal reactor, the heating and reaction functions are combined together, because of the stirring function, a part of the sludge just fed is not fully remained and directly flows to the outlet of the reactor in a short time; thus, the actual reaction time of the reactor is less than the design residence time. In the technical scheme, the heating function is arranged in a first process 15, a second process 12 and a third process 14 are reaction areas, and the processes belong to a complete pushing flow state, which can be understood as that sludge flows due to pushing; sufficient reaction time can be ensured. The residence time obtained with this solution will be greater than that of a conventional hydrothermal reactor, at the same volumetric conditions.

Example two

The utility model provides a many return strokes hydrothermal reactor is a variation of technical scheme in the embodiment one. The attached drawings can be combined with those in the first embodiment.

The first embodiment describes a single return hydrothermal reactor. The double-pass hydrothermal reactor is described below.

When the present multi-pass hydrothermal reactor is provided with 1, 3, 5 … … 2n +1 (where n is a natural number) layers of the jacket 10, that is, when the jacket 10 is singular; the multi-return-stroke hydrothermal reactor has 2, 4, 6 … … 2(n +1) (wherein n is a natural number) return strokes, and correspondingly, the multi-return-stroke hydrothermal reactor can be divided into two return strokes, four return strokes, six return strokes and other double return strokes.

At this time, the basic structure of the first embodiment can be kept unchanged; namely, a plurality of annular and uniformly arranged communication ports 9 are formed in the jacket 10 between the 2n pass and the 2n +1 pass, and the communication ports 9 are positioned at the upper part of the jacket 10; wherein n is a positive integer. And changing the material outlet 18 at the bottom of the double-return hydrothermal reactor in the last pass to the middle for discharging. The effects of volume reduction, cost reduction, sufficient sludge reaction time and full and complete reaction of the multi-return-process hydrothermal reactor can also be achieved.

Of course, the process pipe orifice, the tank body flange and the heat insulation layer 13 arranged on the container are still indispensable.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. A multi-pass hydrothermal reactor comprising a vessel; a heating stirrer is arranged in the container, and a feed inlet and an air inlet are formed in the container; the device is characterized in that at least one layer of jacket is fixedly connected outside the container, the innermost layer of jacket is communicated with the container, and the outermost layer of jacket is provided with a discharge hole; the container and the jacket form a multi-return structure, the container is internally provided with a first process and is provided with a heating zone, and the flow outside the first process is provided with a reaction retention zone.

2. The multi-pass hydrothermal reactor according to claim 1, wherein the number of passes in the multi-pass structure is set to three or more, and the discharge port is located at the bottom of the outermost jacket.

3. The multi-return-stroke hydrothermal reactor according to claim 2, wherein a plurality of annular and uniformly arranged communication ports are formed in the jacket between the 2n stroke and the 2n +1 stroke, and the communication ports are located at the upper part of the jacket; wherein n is a positive integer.

4. A multi-pass hydrothermal reactor according to claim 1, wherein the ratio of the volumes of the heating zone to each pass reaction residence zone is 1: 1.

5. a multi-pass hydrothermal reactor according to any of claims 1 to 4 wherein the gas inlet connects the pipeline to the bottom outlet in the first pass; and a gas distribution device communicated with the gas inlet is fixed in the first process and is used for uniformly spraying steam into the container to be uniformly mixed with sludge.

6. A multi-pass hydrothermal reactor according to any of claims 1-4, wherein the vessel is provided with a process nozzle.

7. A multi-pass hydrothermal reactor according to any of claims 1 to 4 wherein the top of the vessel is jacketed and provided with a tank flange for installation and maintenance.

8. A multi-pass hydrothermal reactor according to any of claims 1-4, characterized in that the outer wall of the outermost jacket is coated with an insulating layer.