CN218232169U - Reation kettle for sludge hydrolysis - Google Patents

Abstract

The utility model provides a reation kettle is used in mud hydrolysis, which comprises a tank body, jar body top sets up the mud import, and jar body bottom sets up the mud discharge port, and the internal agitator that is equipped with of jar, agitator connection set up in the external gear motor of jar the internal agitator below of jar is equipped with annular steam jet pipe, be equipped with steam inlet and steam outlet on the steam jet pipe, steam outlet is a plurality ofly, evenly arranges along steam jet pipe top circumference and is used for the internal injection steam of square jar, steam inlet connects steam conduit, steam conduit's import sets up in the external portion of jar. This reation kettle has the advantage that can make mud and the even flash mixed of steam large tracts of land for steam heat gives mud fast, makes jar internal portion temperature evenly reach hydrothermal reaction's effect.

Description

Reation kettle for sludge hydrolysis

Technical Field

The utility model mainly relates to the technical field related to medical sewage and sludge treatment, in particular to a reaction kettle for sludge hydrolysis.

Background

The medical sewage and sludge have complex components, contain pathogenic microorganisms, toxic and harmful physical and chemical pollutants, radioactive pollution and the like, have the characteristics of space pollution, acute infection, latent infection and the like, and can become an important way for spreading epidemic diseases and seriously pollute the environment without effective treatment. Under the background of world wide fresh crown epidemic mad and poor abuse in 2020, the significance of properly treating medical sewage sludge (hereinafter referred to as medical sludge) is particularly important.

A thermal hydrolysis process for treating medical sludge features that based on the principle of cell breaking, a series of hydrothermal reactions take place to break down the flocs of microbes and break the cells of microbes, resulting in the conversion of the bound water and intracellular water which are difficult to remove directly into free water which is easy to remove directly, and the hydrophilic colloid is destroyed, so eliminating bacteria and virus and greatly improving the dewatering performance of sludge. The reaction kettle for sludge thermal hydrolysis is used as an important part of the hydrothermal reaction, a heating mode of introducing steam to be directly mixed with materials is adopted, and a stirring device is arranged to strengthen the heat transfer process, accelerate the sludge to generate denaturation and hydrolysis and realize sterilization.

Among the prior art, a reation kettle for medical sludge treatment is subject to jar body structural design, and the agitator adopts spiral agitator more, and the stirring area is little, and the design of steam injection pipeline is unreasonable in addition, is difficult to guarantee the large tracts of land homogeneous mixing of steam and mud, and noise and vibrations are great when equipment moves.

SUMMERY OF THE UTILITY MODEL

For solving the not enough of prior art, the utility model discloses combine prior art, set out from practical application, provide a reation kettle for mud pyrohydrolysis, have the advantage that can make mud and the even flash mixed of steam large tracts of land for steam heat gives mud fast, makes jar internal portion temperature evenly reach hydrothermal reaction's effect.

The technical scheme of the utility model as follows:

the utility model provides a reation kettle for sludge hydrolysis, includes a jar body, jar body top sets up the mud import, and jar body bottom sets up the mud discharge port, and the internal agitator that is equipped with of jar, agitator connection set up in the external gear motor of jar the internal agitator below of jar is equipped with annular steam injection pipe, be equipped with steam inlet and steam outlet on the steam injection pipe, steam outlet is a plurality of, evenly arranges along steam injection pipe top circumference and is used for the internal injection steam of upper tank, steam inlet connects the steam conduit, the import of steam conduit sets up in the external portion of jar.

Further, the tank body comprises a tank body upper end enclosure, a cylinder body and a tank body lower end enclosure, a tank body upper flange is arranged on the tank body upper end enclosure, a tank body lower flange is arranged on the cylinder body, and the tank body upper end enclosure and the cylinder body are connected through the tank body upper flange, the tank body lower flange and a fastener.

Further, a sealing ring is arranged between the upper flange of the tank body and the lower flange of the tank body.

Further, the agitator is the frame agitator, the frame agitator includes center pin and a plurality of puddler, and a plurality of puddlers are along the vertical even arrangement of center pin circumference, are connected through the connecting rod of horizontal setting between puddler and the center pin.

Further, center pin connection is in gear motor, gear motor installs on the speed reducer support, and the speed reducer support is fixed to be set up in jar body top.

Further, steam conduit sets up in mud discharge port one side to with jar body bottom fixed connection, steam conduit's import sets up in jar external portion, and steam conduit's export sets up in jar internal portion, and steam injection pipe's steam inlet sets up in steam injection pipe below and through one section pipe-in connection in steam conduit's export.

Further, the tank body is provided with a temperature sensor, a pressure gauge, a pressure sensor and a safety valve.

Further, the tank body is also provided with an observation decontamination opening, a radar liquid level meter and an air circulation interface, and the observation decontamination opening is arranged at the lower part of the side wall of the tank body.

Further, the tank body is coated with a heat insulation material and a stainless steel plate.

Furthermore, the tank body is also provided with supporting legs and a lifting ring seat.

The utility model has the advantages that:

1. the utility model discloses in, jar body bottom is furnished with the steam injection pipe, and the injection pipe is the annular, and it has a plurality of apertures to open the top, and steam can be even gets into jar body, heaies up and noise abatement and vibrations the mud of jar internal portion, and jar internal agitator adopts frame agitator, and the stirring area is big, can effectually transmit the heat with steam for mud, makes jar internal portion temperature evenly reach hydrothermal reaction's effect.

2. The utility model discloses a jar body sets up to upper and lower two parts, and the middle flange joint that adopts can be convenient puts into jar internally with the great frame agitator of stirring area.

3. The utility model discloses a steam injection pipe structural design is simple reasonable, simple to operate, compact structure.

4. The utility model discloses a jar body is furnished with temperature sensor, manometer, pressure sensor, relief valve etc. but the temperature, the pressure etc. of the internal portion of real-time supervision jar make equipment safe operation, and a jar side wall is equipped with observes the clear dirty mouth, can regularly inspect and clear up the internal portion of jar.

Drawings

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic side view of the present invention;

FIG. 3 is a schematic top view of the present invention;

FIG. 4 is a schematic cross-sectional view of the H-H portion of FIG. 1.

Reference numerals shown in the drawings:

1, 2, 3, 4, 5, 6-frame type stirrer, 7, 8, 9, 10, 11, 12 radar level gauge, 13, pressure gauge, pressure sensor, 14, 15, safety valve, 16, 17, 18, 19, speed reducer bracket; 23. a steam pipeline.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention can be made by those skilled in the art after reading the teaching of the present invention, and these equivalents also fall within the scope of the present invention.

As shown in fig. 1-4, it is a schematic diagram of a related structure of a reaction kettle for sludge pyrohydrolysis according to an embodiment of the present invention.

This reation kettle mainly includes a jar body, and one side at jar body top sets up mud import 14, sets up mud discharge port 11 in the middle of jar body bottom, and jar internal frame agitator 6 that is equipped with sets up speed reducer support 20 in the middle of jar body top, and installation gear motor 19 on the speed reducer support 20, gear motor 19 connect frame agitator 6 and are used for a power transmission to frame agitator 6 and make it realize rotating the stirring.

In this embodiment, the frame stirrer 6 that adopts includes center pin and four puddlers, and four puddlers are vertically evenly arranged along center pin circumference, are connected through the connecting rod of horizontal setting between four puddlers and the center pin. Frame agitator 6's structural design, the stirring area is big, can effectually give mud with the heat transfer of steam, makes jar internal portion temperature evenly reach hydrothermal reaction's effect. Meanwhile, in order to facilitate the placement of the frame-type stirrer 6 with a large volume, in this embodiment, the space between the tank upper end enclosure 1 and the cylinder 5 constituting the tank body is divided into two parts. The tank body upper end enclosure 1 is provided with a tank body upper flange 2, the barrel 5 is provided with a tank body lower flange 4, and the tank body upper end enclosure 1 and the barrel 5 are connected through the tank body upper flange 2, the tank body lower flange 4 and a plurality of fastening bolts. In order to ensure the sealing performance of the connection, a sealing ring 3 is arranged between the tank upper flange 2 and the tank lower flange 4.

In this embodiment, a steam injection pipe 9 for injecting steam is provided at the bottom of the tank below the frame stirrer 6. Wherein, be equipped with a steam inlet and a plurality of steam outlet on steam injection pipe 9, a plurality of steam outlet are evenly arranged in steam injection pipe 9 top circumference and are used for spraying steam in the upper tank body.

Steam conduit 23 sets up in 11 one sides of mud discharge port, is located jar body bottom, and steam conduit 23 welds on jar body to the import of lower part is located outside the jar body, and the upper portion export is located the jar internally, and the steam inlet of steam injection pipe 9 sets up in steam injection pipe 9 below and is connected with a section pipeline, and this section pipeline inserts and connects the circulation of realizing steam in steam conduit 23's the export. This structure makes the even jar body of entering of steam, to jar internal sludge of portion heat up and noise reduction and vibrations.

Meanwhile, in this embodiment, the tank body is provided with a temperature sensor, a pressure gauge, a pressure sensor, a safety valve and the like, so that the temperature, the pressure and the like in the tank body can be monitored in real time, the equipment can be safely operated, and the temperature sensor, the pressure gauge, the pressure sensor and the safety valve are respectively arranged corresponding to the temperature sensor interface 7, the pressure gauge, the pressure sensor interface 13 and the safety valve interface 5. The side wall of the tank body is provided with an observation and decontamination opening 18, so that the interior of the tank body can be regularly checked and cleaned.

The working principle of the reaction kettle is a technology for heating sludge at high temperature and high pressure by utilizing steam to generate hydrothermal reaction. Medical sludge containing viruses, bacteria and biomass enters the tank body through the sludge inlet 14 at the top of the tank body, and high-temperature and high-pressure steam uniformly enters the tank body from the steam jet pipe 9 to heat the sludge. And meanwhile, the frame type stirrer 6 is started, so that steam is fully contacted with sludge, and temperature stratification is avoided. The sludge is heated to 175 c or more under pressure and maintained for 40 minutes or more, thereby breaking cells and largely transferring organic matter from a solid state to a liquid state, and achieving complete hydrolysis. And (3) after the hydrolysis is finished, removing the pressure in the tank body, opening a bottom valve to discharge the sludge, and dehydrating through a centrifugal machine after cooling.

The working process of the reaction kettle is as follows:

1. sludge feeding: medical sludge containing viruses, bacteria and biomass enters the tank body through a sludge inlet 14 at the top of the tank body, and when the radar liquid level meter 12 detects that a set liquid level is reached, an inlet valve is closed, and the sludge feeding is stopped;

2. and (3) heating: the valve of the sludge inlet and discharge port is closed, high-temperature and high-pressure steam uniformly enters the tank body from the steam injection pipe 9 to heat sludge, and meanwhile, the frame type stirrer 6 is opened to ensure that the steam is fully contacted with the sludge, so that temperature stratification is avoided, and the sludge is heated to 175 ℃ or higher under certain pressure;

3. thermal hydrolysis: the high-temperature and high-pressure state is kept for 40 minutes or longer, so that cells are broken, organic matters are greatly transferred from a solid state to a liquid state, and the sludge is completely hydrolyzed;

4. the air circulation interface 16 is opened to relieve the internal pressure of the tank;

5. discharging sludge: and opening a valve of the sludge discharge port 11 to discharge the sludge, and making full use of the residual heat in the tank body to prepare a next batch of thermal hydrolysis reaction.

In the aspect of safety protection of the reaction kettle, a safety valve, a pressure sensor and a temperature sensor are arranged, the change of the pressure and the temperature in the tank is monitored in real time, a control system of the device can cut off a power supply under emergency conditions to stop the operation of the device, the reaction kettle for sludge pyrohydrolysis is externally wrapped with a heat insulation material and a stainless steel plate, the temperature of the outer surface of the device is ensured to be less than or equal to 45 ℃, and the appearance of the device is ensured to be attractive.

Claims (10)

1. The utility model provides a reation kettle for sludge hydrolysis, includes a jar body, jar body top sets up the mud import, and jar body bottom sets up the mud discharge port, and the internal agitator that is equipped with of jar, agitator connection set up in the external gear motor of jar, its characterized in that jar internal portion agitator below is equipped with annular steam injection pipe, be equipped with steam inlet and steam outlet on the steam injection pipe, steam outlet is a plurality ofly, evenly arranges along steam injection pipe top circumference and is used for the internal injection steam of square jar, steam inlet connects steam conduit, steam conduit's import sets up in the external portion of jar.

2. The sludge hydrolysis reactor as recited in claim 1, wherein the tank includes a tank upper head, a tank body, and a tank lower head, the tank upper head is provided with a tank upper flange, the tank body is provided with a tank lower flange, and the tank upper head and the tank body are connected to each other through the tank upper flange, the tank lower flange, and the fastening member.

3. The reactor for sludge hydrolysis according to claim 2, wherein a seal ring is provided between the tank upper flange and the tank lower flange.

4. The sludge hydrolysis reactor according to claim 1, wherein the agitator is a frame agitator, the frame agitator includes a central shaft and a plurality of agitator arms, the plurality of agitator arms are vertically and uniformly arranged along the circumference of the central shaft, and the agitator arms are connected with the central shaft through a transversely arranged connecting rod.

5. The reactor for sludge hydrolysis according to claim 4, wherein the central shaft is connected to a speed reduction motor, the speed reduction motor is mounted on a speed reducer support, and the speed reducer support is fixedly arranged on the top of the tank body.

6. The sludge hydrolysis reactor as recited in claim 1, wherein the steam pipe is disposed at one side of the sludge discharge port and fixedly connected to the bottom of the tank, an inlet of the steam pipe is disposed outside the tank, an outlet of the steam pipe is disposed inside the tank, and a steam inlet of the steam injection pipe is disposed below the steam injection pipe and is inserted into and connected to an outlet of the steam pipe through a section of pipe.

7. The sludge hydrolysis reactor according to claim 1, wherein the tank is provided with a temperature sensor, a pressure gauge, a pressure sensor, and a safety valve.

8. The sludge hydrolysis reactor according to claim 1, wherein the tank body is further provided with an observation and decontamination opening, a radar level gauge and an air circulation interface, and the observation and decontamination opening is arranged at a lower portion of a side wall of the tank body.

9. The sludge hydrolysis reactor according to claim 1, wherein the tank body is covered with a heat insulating material and a stainless steel plate.

10. The sludge hydrolysis reactor according to claim 1, wherein the tank body is further provided with support legs and a suspension ring seat.

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