CN210560040U

CN210560040U - Sludge drying thermal decomposition equipment based on normal-pressure superheated steam

Info

Publication number: CN210560040U
Application number: CN201921527349.5U
Authority: CN
Inventors: 朱志宏
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-12
Filing date: 2019-09-12
Publication date: 2020-05-19
Anticipated expiration: 2029-09-12

Abstract

The utility model belongs to the technical field of sludge treatment equipment, concretely relates to mud drying pyrolysis equipment based on ordinary pressure superheated steam, include: the deodorization device is vertically arranged; the saturated steam generating device is vertically installed; the treatment tank is in a strip shape and is erected between the deodorization device and the saturated steam generation device; the treatment tank is provided with an inner cavity suitable for conveying sludge, and a feed inlet and a discharge outlet which are communicated with the inner cavity, and the inner cavity is communicated with the deodorization device; the superheated steam generating device comprises a shell and a conductive hollow heating pipe arranged in the shell; the shell is arranged on the processing tank; the conductive hollow heating pipe comprises an air inlet pipe and an air outlet pipe, the air inlet pipe is communicated with the saturated steam generating device, and the air outlet pipe is communicated with the inner cavity of the treatment tank. Through above-mentioned structure, a clean sludge drying treatment medium is provided, not only drying efficiency is high, and the pollution degree is little moreover.

Description

Sludge drying thermal decomposition equipment based on normal-pressure superheated steam

Technical Field

The utility model belongs to the technical field of sludge treatment equipment, concretely relates to sludge drying pyrolysis equipment based on ordinary pressure superheated steam.

Background

Sewage sludge is a settleable substance of partial pollutants in sewage after a digestion treatment process, contains rich nutrients, but also contains harmful substances such as pathogens, parasites, heavy metals and the like, so that the proper treatment of the sludge is concerned. The sludge has the obvious characteristics of extremely high water content, the water content of fresh sludge is as high as 97-99%, the water content of sludge subjected to primary mechanical dehydration is still as high as 70-80%, and the difficulty is brought to the transportation and treatment of the sludge. The thermal drying method is one of the methods which are relatively efficient for sludge dehydration and reduction treatment, mainly comprises a direct drying technology and an indirect drying technology, wherein the direct drying technology is that a heat medium is directly contacted with sludge, and moisture in the sludge is mixed with the drying medium and discharged after absorbing heat and evaporating. At present, the sludge direct drying technology mostly adopts hot flue gas and hot air as drying media, for example, waste heat flue gas discharged by a power plant or flue gas generated by combustion is adopted to directly dry the sludge. This is the drying method adopted in chinese patent document CN 209128295U.

The sludge drying mode has the advantages that the heat transfer efficiency is high, the equipment is simple, the components in hot flue gas generated by combustion are complex, chemical reaction is easily carried out on the hot flue gas and the sludge in the drying process, partial nutrients in the sludge are taken away, more harmful gas is generated, and the partial harmful gas is discharged into the air to cause further pollution.

Therefore, aiming at the defects, the utility model discloses it is urgently needed to provide a mud drying pyrolysis equipment based on ordinary pressure superheated steam.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a mud drying pyrolysis equipment based on ordinary pressure superheated steam to hot flue gas, the hot-air after adopting the burning can bring further polluted problem as drying medium among the solution prior art.

The utility model provides a sludge drying pyrolysis equipment based on ordinary pressure superheated steam, include: the deodorization device is vertically installed and is suitable for gas deodorization, and the saturated steam generation device is vertically installed and is suitable for providing saturated steam; the treatment tank is in a long strip shape and is erected between the deodorization device and the saturated steam generation device; the treatment tank is provided with an inner cavity suitable for conveying sludge, and a feed inlet and a discharge outlet which are communicated with the inner cavity, and the inner cavity is communicated with the deodorization device; the superheated steam generator comprises a shell and a conductive hollow heating pipe arranged in the shell; the shell is arranged on the processing tank; the conductive hollow heating pipe comprises an air inlet pipe and an air outlet pipe, the air inlet pipe is communicated with the saturated steam generating device, and the air outlet pipe is communicated with the inner cavity of the treatment groove.

In the apparatus for sludge drying and thermal decomposition using normal-pressure superheated steam as described above, it is further preferable that the number of the treatment tanks is plural, and the treatment tanks are installed in parallel between the deodorizing device and the saturated steam generating device; in the treatment tanks which are erected in parallel, the discharge port of the treatment tank positioned above is connected with the feed port of the treatment tank positioned below.

In the above apparatus for sludge drying and thermal decomposition using atmospheric superheated steam, it is further preferable that the deodorizing device includes a tower body, and an electric heating plate and a deodorizing medium provided inside the tower body; an exhaust port is formed in the top of the tower body; the deodorizing medium is arranged at the air outlet; the electric heating sheet is installed below the deodorizing medium.

In the above apparatus for sludge drying and pyrolysis based on atmospheric superheated steam, it is preferable that the number of the electric heating plates is plural, and the plural electric heating plates are provided inside the tower body at intervals from bottom to top.

In the apparatus for sludge drying and thermal decomposition by atmospheric superheated steam as described above, it is further preferable that the deodorizing medium is a platinum catalyst.

The apparatus for sludge drying and thermal decomposition based on normal pressure superheated steam as described above further preferably further comprises a condensing device, which is in communication with the exhaust port of the tower body and adapted to condense and recover hot steam.

The apparatus for sludge drying and thermal decomposition based on atmospheric superheated steam as described above further preferably further comprises a screw rod provided in the treatment tank and adapted to transport sludge.

The apparatus for sludge drying and thermal decomposition using normal pressure superheated steam as described above further preferably further comprises a residue transport vehicle provided below the discharge port of the treatment tank and adapted to transport the sludge residue.

In the above apparatus for sludge drying and thermal decomposition based on atmospheric superheated steam, it is further preferable that a high temperature resistant layer is provided on an inner wall of the housing, and the high temperature resistant layer is made of heat resistant black ceramic; the conductive hollow heating pipe is S-shaped and is fixed in the shell.

In the above sludge drying and thermal decomposition facility using atmospheric superheated steam, it is further preferable that the saturated steam generator is an electric steam generator.

Compared with the prior art, the utility model has the following advantage:

the utility model discloses a saturated steam generating device and superheated steam generating device that set up and handle the groove intercommunication utilize saturated steam generating device to generate saturated steam and carry superheated steam generating device to heat, make it reach predetermined high temperature, form ordinary pressure superheated steam, ordinary pressure superheated steam carries to the inner chamber of handle the groove through the outlet duct in, carry out the drying and the pyrolysis of mud and handle, later carry out deodorization in the deodorizing device with the gaseous smell that contains that mud pyrolysis produced together. Through the setting of above-mentioned device, superheated steam extrudees the air for mud is in superheated steam's atmosphere completely, has avoided the oxidation brown stain of material and the danger of catching fire, explosion, and superheated steam can heat higher temperature, makes the mud drying have higher drying efficiency.

Drawings

FIG. 1 is a schematic structural diagram of a sludge drying thermal decomposition device based on normal pressure superheated steam in the present invention;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a schematic view showing an internal structure of the superheated steam-generating device of FIG. 1;

fig. 4 is a schematic view showing an internal structure of the deodorization device in fig. 1.

Description of reference numerals:

1-a deodorizing device, 11-a tower body, 12-a deodorizing medium, 13-an electric heating sheet, 14-an exhaust port, 2-a saturated steam generating device, 3-a treatment tank, 4-a superheated steam generating device, 41-a conductive hollow heating pipe, 42-an air inlet pipe, 43-an air outlet pipe, 5-a feed opening, 6-a discharge opening and 7-a residue carrying trolley.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 to 4, the present embodiment discloses a thermal decomposition apparatus for sludge drying based on atmospheric superheated steam, which includes: the deodorization device 1 is vertically installed and is suitable for gas deodorization; the saturated steam generating device 2 is vertically installed and is suitable for providing saturated steam; the treatment tank 3 is long and is erected between the deodorization device 1 and the saturated steam generation device 2; the treatment tank 3 is provided with an inner cavity suitable for conveying sludge, and a feeding port 5 and a discharging port 6 which are communicated with the inner cavity, and the inner cavity is communicated with the deodorization device 1; a superheated steam-generating device 4, the superheated steam-generating device 4 comprising a housing and an electrically conductive hollow heating pipe 41 disposed within the housing; the housing is mounted on the processing tank 3; an air inlet pipe 42 of the conductive hollow heating pipe 41 is communicated with the saturated steam generating device 2, and an air outlet pipe 43 is communicated with the inner cavity of the treatment tank 3.

As a preferred embodiment of this embodiment, as shown in fig. 1 to 2, a plurality of treatment tanks 3 are provided in parallel between the deodorizing means 1 and the saturated steam generating means 2, and the discharge port 6 of the treatment tank 3 located above is connected to the feed port 5 of the treatment tank located below in the treatment tanks 3 arranged in parallel. The arrangement of the structure realizes the multiplexing of single loading and multiple parallel loading, and realizes the sludge treatment with large capacity in short time.

As a preferred embodiment of this embodiment, further, as shown in fig. 4, the deodorizing device 1 includes a tower body 11, and an electric heating plate 13 and a deodorizing medium 12 which are disposed inside the tower body 11; an exhaust port 14 is arranged at the top of the tower body 11; the deodorizing medium 12 is installed at the exhaust port 14; the electric heating sheet 13 is installed under the deodorizing medium 12.

As a preferred embodiment of this embodiment, as shown in fig. 4, the number of the electric heating plates 13 is plural, and the plural electric heating plates 13 are arranged inside the tower body 11 at intervals from bottom to top.

In a preferred embodiment of this embodiment, the deodorizing medium 12 is a platinum catalyst.

As a preferred embodiment of this embodiment, further, the heat recovery system further comprises a condensing device, wherein the condensing device is communicated with the exhaust port 14 of the tower body 11 and is adapted to condense and recover the hot steam. The condensing device is conventional equipment in the prior art, and is suitable for recovering hot steam when being applied to the condensing device, so that the recycling is realized.

As a preferable embodiment of this embodiment, the sludge treatment device further comprises a screw rod, and the screw rod is disposed in the treatment tank 3 and is adapted to transport sludge. The screw is conventional in the art and is adapted for use therein for transporting sludge by rotation of the screw.

As a preferred embodiment of this embodiment, as shown in fig. 1-2, the sludge treatment apparatus further comprises a residue carrying trolley 7, wherein the residue carrying trolley 7 is disposed below the discharge port 6 of the treatment tank 3 and is suitable for transporting the sludge residue.

As a preferable embodiment of this embodiment, further, as shown in fig. 3, the inner wall of the housing of the superheated steam generator 4 is provided with a high temperature resistant layer made of heat resistant black ceramic; the conductive hollow heating pipe 41 has an S-shape, which can be seen from the top view of fig. 3, and is fixed in the housing. Preferably, the superheated steam generator 4 further comprises a controller adapted to control the heating temperature of the conductive hollow heating pipe 41, thereby controlling the temperature of the superheated steam. The plurality of treatment tanks 3 are provided with the plurality of superheated steam generators 4, so that the temperature in each treatment tank 3 can be freely adjusted, and the sludge drying and thermal decomposition equipment can adjust different temperatures according to the characteristics of sludge to perform continuous operations such as pretreatment, main treatment, post-treatment and the like.

As a preferred embodiment of the present embodiment, further, the saturated steam generating device 2 is an electric steam generator. The electric steam generator is also called a non-detection type small electric steam boiler, a miniature electric steam boiler and the like, and is a miniature boiler which can automatically supplement water and heat and continuously generate low-pressure steam, a small water tank, a water supplementing pump and a control operation system are integrated into a whole, complex installation is not needed, and only a water source and a power supply are connected. Compared with a combustion type steam generator, the electric steam generator is simple in use condition and does not bring about too much pollution.

The utility model discloses a saturated steam generating device 2 and superheated steam generating device 4 that set up and handle groove 3 intercommunication utilize saturated steam generating device 2 to generate saturated steam and carry superheated steam generating device 4 to heat, make it reach predetermined high temperature, form ordinary pressure superheated steam, ordinary pressure superheated steam passes through outlet duct 43 and carries to the inner chamber of handle groove 3 in, carry out the drying and the pyrolysis of mud and handle, later carry with the gaseous deodorization in deodorizing device 1 together of containing the smell that mud pyrolysis produced. Through the setting of above-mentioned device, superheated steam extrudees the air for mud is in superheated steam's atmosphere completely, has avoided the oxidation brown stain of material and the danger of catching fire, explosion, and superheated steam can heat higher temperature, makes the mud drying have higher drying efficiency.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A sludge drying thermal decomposition device based on normal-pressure superheated steam is characterized by comprising:

the deodorization device is vertically installed and is suitable for gas deodorization;

the saturated steam generating device is vertically installed and is suitable for providing saturated steam;

the treatment tank is in a long strip shape and is erected between the deodorization device and the saturated steam generation device; the treatment tank is provided with an inner cavity suitable for conveying sludge, and a feed inlet and a discharge outlet which are communicated with the inner cavity, and the inner cavity is communicated with the deodorization device;

the superheated steam generator comprises a shell and a conductive hollow heating pipe arranged in the shell; the shell is arranged on the processing tank; the conductive hollow heating pipe comprises an air inlet pipe and an air outlet pipe, the air inlet pipe is communicated with the saturated steam generating device, and the air outlet pipe is communicated with the inner cavity of the treatment groove.

2. The atmospheric superheated steam-based sludge drying and thermal decomposition device according to claim 1, wherein the number of the treatment tanks is plural, and the treatment tanks are arranged in parallel between the deodorization device and the saturated steam generation device; in the treatment tanks which are erected in parallel, the discharge port of the treatment tank positioned above is connected with the feed port of the treatment tank positioned below.

3. The atmospheric-pressure superheated steam-based sludge drying and thermal decomposition device according to claim 2, wherein the deodorizing means comprises a tower body, and an electric heating plate and a deodorizing medium which are arranged inside the tower body; an exhaust port is formed in the top of the tower body; the deodorizing medium is arranged at the air outlet; the electric heating sheet is installed below the deodorizing medium.

4. The atmospheric-pressure superheated steam-based sludge drying and thermal decomposition device according to claim 3, wherein the number of the electric heating plates is plural, and the plural electric heating plates are arranged at intervals from bottom to top inside the tower body.

5. The atmospheric superheated steam-based sludge drying thermal decomposition device according to claim 4, wherein the deodorizing medium is a platinum catalyst.

6. The atmospheric superheated steam-based sludge drying and thermal decomposition device according to claim 5, further comprising a condensing means, wherein the condensing means is communicated with the exhaust port of the tower body and is adapted to condense and recover the hot steam.

7. The atmospheric superheated steam-based sludge drying thermal decomposition device according to claim 6, further comprising a screw rod provided in the treatment tank and adapted to transport sludge.

8. The atmospheric superheated steam-based sludge drying and thermal decomposition device according to claim 7, further comprising a residue carrying trolley disposed below the discharge port of the treatment tank and adapted to transport the residue.

9. The atmospheric superheated steam-based sludge drying and thermal decomposition device according to claim 8, wherein the inner wall of the housing is provided with a high temperature resistant layer made of heat resistant black ceramic; the conductive hollow heating pipe is S-shaped and is fixed in the shell.

10. The atmospheric superheated steam-based sludge drying thermal decomposition device according to claim 9, wherein the saturated steam generation means is an electric steam generator.