WO2008128466A1

WO2008128466A1 - Waste disposal unit

Info

Publication number: WO2008128466A1
Application number: PCT/CN2008/070735
Authority: WO
Inventors: Kunio Yoshikawa; Tongyu Huang; Lin Zhang; Norihiko Suzuki
Original assignee: Shenzhen Eco-Solution Technology Corporation
Priority date: 2007-04-18
Filing date: 2008-04-17
Publication date: 2008-10-30
Also published as: CN101288874B; CN101288874A

Abstract

A waste disposal unit (100) includes a reactive kettle (2) containing waste for disposal, a stirring device (3) for stirring waste in the reactive kettle (2), a receiving opening (21) and a outlet opening (22) connected with the reactive kettle (2) and a pressure adjusting device (5). The waste disposal unit (100) also includes a shell (1) to which the reactive kettle (2) arranged with some space left between them. The waste disposal unit (100) has a first steam injecting opening (42) and a second steam injecting opening (43) which are respectively set on the shell (1) and the reactive kettle (2). The reactive materials in the reactive kettle (2) are dried by the steam injected between the shell (1) and reactive kettle (2), only congealing of exhaust gas without a need of dehydrating and drying equipments and a sewage disposal.

Description

Waste treatment plant

TECHNICAL FIELD The present invention relates to a waste disposal apparatus, and more particularly to an organic waste treatment apparatus.

Background technique

With the increasing awareness of environmental protection, there are various devices for treating and recycling various wastes such as garbage and sludge. For example, in Japanese Patent Laid-Open Publication No. 2003-47409, a method of processing food residue, wood, paper, or the like into a feed or a fertilizer is disclosed. The raw material is put into a treatment tank and introduced into a steam maintenance vessel. temperature. When the pressure in the treatment tank is constant, the processing is completed by stirring, drying, or the like. The disadvantage is that it is only suitable for the treatment of raw materials having a low water content. When the moisture content of the raw materials is high, it is difficult to pyrolyze and the pyrolysis gas cannot be sufficiently produced.

In Japanese Patent Publication No. 2007-075659, a fuel producing apparatus and a fuel manufacturing method are disclosed, in which kitchen waste is put into a processing vessel of a stirring apparatus, and then high-pressure steam is injected for treatment, and different wastes are used. Different processing conditions are used. The drawback is that after the extrusion dewatering, the discharged material is finally heated or dried. This requires additional drying equipment for drying, complicating the entire process, increasing the manpower and cost of the input. Summary of the invention

The technical problem to be solved by the present invention is that, in view of the drawbacks of the prior art fuel manufacturing apparatus that require additional drying equipment, a waste treatment apparatus is provided which does not require additional drying equipment during waste disposal.

The technical solution adopted by the present invention to solve the technical problems thereof is: constructing a waste treatment device, comprising: a reaction vessel for containing waste for treatment, a stirring device for stirring waste in the reaction vessel, and a reaction port and a discharge port communicating with the reaction vessel, and a pressure regulating device, the waste treatment device further comprising an outer casing, the reaction vessel being located in the outer casing and having a gap therebetween; The outer casing and the reaction vessel are respectively provided with a first steam injection port and a second steam injection port.

In the waste treatment apparatus of the present invention, the boiler is further included, and the boiler is connected to the first steam injection port and the second steam injection port.

In the waste treatment apparatus according to the present invention, an exhaust valve is provided in the reaction vessel, and the exhaust valve is connected to an exhaust gas treatment device.

In the waste treatment device according to the present invention, an exhaust valve is provided on the outer casing.

In the waste treatment device of the present invention, the pressure regulating device includes a first exhaust pipe that communicates with a lumen of the outer casing, and is connected to the first exhaust pipe and disposed outside the outer casing The first pressure regulating valve.

In the waste treatment device of the present invention, the pressure regulating device further includes a second exhaust pipe communicating with the inner cavity of the reaction kettle, and being connected to the second exhaust pipe and disposed in the a second pressure regulating valve external to the housing.

The waste treatment apparatus according to the present invention further includes control means for controlling the stirring means, the pressure adjusting means, and the steam injection.

In the waste treatment device of the present invention, a pressure gauge and a thermometer connected to the control device are further included.

The waste treatment device embodying the present invention has the following beneficial effects:

1. Adding an outer casing, which can be filled with water vapor between the outer casing and the reaction kettle, can enhance the heating and heat preservation effect of the reaction kettle, and directly dry the reacted substances in the reaction kettle.

2. Due to this integrated structure, the equipment for dehydration and drying is omitted, and the drainage treatment is omitted, and only the exhaust gas to be condensed can be treated;

3. In the conventional technology, the extruded water has solid particles, which increases the cost of wastewater treatment, but there is no solid-liquid separation in the waste treatment device of the present invention, thereby saving cost;

4. Waterless treatment, solids are completely left in the reactor, high output, low emissions, especially when dealing with hazardous waste such as industrial waste and medical waste, reducing the emission of pollutants and the movement of materials, which is conducive to environmental protection. DRAWINGS The present invention will be further described with reference to the accompanying drawings and embodiments in which:

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic view of a waste treatment apparatus of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION Fig. 1 is a schematic view of a waste treatment apparatus of the present invention. As shown in FIG. 1, the waste treatment apparatus 100 of the present invention comprises: a casing 1; a reaction vessel 2 located inside the casing 1 and having a gap with the casing 1 for containing various wastes for processing; , for stirring the waste in the reaction vessel 2; a steam injection device 4 for injecting water vapor into the outer casing 1 and the reaction vessel 2; and a pressure regulating device 5 for controlling the pressure in the outer casing 1 and the reaction vessel 2; And a control device 6 for controlling the stirring device 3, the water vapor injecting device 4, and the pressure regulating device 5.

Both the outer casing 1 and the reaction vessel 2 are composed of a pressure-resistant pressure vessel. An input port 21 leading to the inside of the reaction vessel 2 is provided above the outer casing 1 for introducing waste into the reaction vessel 2. For the purpose of facilitating the feeding, a feeding funnel can be provided on the inlet port 21. Below the outer casing 1, there is disposed a discharge port 22 leading to the reaction vessel 2 for discharging the treated material. The steam injection device 4 includes a boiler 41, a first water vapor injection port 42 and a second water vapor injection port 43 which are respectively disposed on the outer casing 1 and the reaction vessel 2. The first and second steam injection ports 42, 43 are all connected to the boiler 41. At this time, the control device 6 individually controls the opening and closing of the boiler 41 and the first and second steam injection ports 42, 43. Alternatively, the boiler 41 may be an external portion that is separated from the waste treatment device, and the first and second steam injection ports 42, 43 on the outer casing 1 and the reaction vessel 2 and the boiler are required when water vapor is injected. Connected to 41, you can inject water vapor. At this time, the control device 6 individually controls the opening and closing of the first and second steam injection ports 42, 43. The water vapor pressure in the boiler 41 is constant, and the pressure inside the casing 1 and the reactor 2 is controlled by the amount of steam injected, thereby controlling the internal temperature.

The stirring device 3 can uniformly pressurize and heat the waste, and includes a rotating shaft 31 disposed inside the reaction vessel 2 in the longitudinal direction, a stirring blade 32 disposed on the rotating shaft 31, and attached to the rotating shaft 31. A motor 33 that drives its forward and reverse rotation. The motor 33 is provided on the housing 1 or outside the housing 1. Preferably, the agitating blades 32 are inclined with respect to the vertical direction of the horizontal rotating shaft toward the discharge port 22, so that the input waste is conveyed to the discharge port 22 while stirring. The motor 33 can be reversed, and the steering and turning time of the motor 33 can be controlled before the waste is converted into a suitable shape. The waste reciprocates in the reaction vessel 2. Preferably, the steam injection port 43 of the reaction vessel 2 is located higher than the rotating shaft 31, and when the waste is stirred, it can be contacted with high-pressure steam to improve the treatment efficiency.

The pressure regulating device 5 includes a first exhaust pipe 51 communicating with the inner cavity of the outer casing 1, a first pressure regulating valve 52 connected to the first exhaust pipe 51 and disposed outside the outer casing 1, if the outer casing 1 and the reaction kettle 2 When the pressure between the two exceeds the predetermined value, the first pressure regulating valve 52 is opened to release the water vapor therein, thereby maintaining the predetermined pressure. Similarly, the pressure regulating device 5 further includes a second exhaust pipe 53 communicating with the inner cavity of the reaction vessel 2, a second pressure regulating valve 54 connected to the second exhaust pipe 53 and disposed outside the outer casing 1. If the pressure inside the reactor 2 exceeds a predetermined value, the second pressure regulating valve 54 is opened to release the water vapor therein, thereby maintaining the predetermined pressure.

On the reaction vessel 2, there is further provided an exhaust valve 23 which can be used to discharge the gas in the chamber and subject the discharged gas to condensation treatment. Preferably, the muffler 24 and the condenser 25 are provided at the outlet of the exhaust valve 23, and if necessary, may be connected to the exhaust gas treatment device for incinerating the discharged gas. On the outer casing 1, an exhaust valve, a muffler connected to the exhaust valve, and a condenser are also provided.

The control unit 6 is electrically connected to the stirring unit 3, the water vapor injecting unit 4, and the pressure adjusting unit 5. By controlling the motor 33 of the stirring device 3, the time and direction of the agitation can be adjusted. By controlling the steam injection device 4, the temperature and pressure between the reaction vessel 2 and the outer casing 1 and the reaction vessel 2 can be adjusted to facilitate the reaction and drying of the waste. A pressure gauge and a thermometer (none of which are shown) are provided on the waste disposal apparatus 100 for sensing the pressure inside the reactor 2 and the pressure and temperature between the outer casing 1 and the reactor 2. Control unit 6 is electrically coupled to the pressure gauge and thermometer to control temperature and pressure.

Next, the operation principle of the waste treatment apparatus 100 of the present invention will be described. The waste is introduced into the reaction vessel 2 from the inlet 21, and the pressure at the reaction, the holding time, the stirring time of the stirring device 3, and the corresponding temperature are set by the control device 6. Thereby, the waste is pyrolyzed. After completion of the reaction in the reaction vessel 2, high-pressure water vapor is injected into the outer casing 1 and the reaction vessel 2 through the first steam injection port 42 on the outer casing 1, thereby drying the material in the reaction vessel 2 to cause the reactant to be dissolved. Solid and gas separation. The separated gas is discharged through the exhaust valve 23 and subjected to subsequent processing. Thereafter, the dried matter is discharged through the discharge port 22 to be used as a fertilizer or an auxiliary fuel. Compared with the prior art, the waste treatment device 100 of the present invention has the following characteristics:

1. The outer casing 1 is added, and water vapor can be filled between the outer casing 1 and the reaction vessel 2, and the reacted substances in the reaction vessel 2 are directly dried;

3. In the conventional technology, the extruded water has solid particles, which increases the cost of wastewater treatment, but there is no solid-liquid separation in the waste treatment device 100 of the present invention, thereby saving cost;

4. Waterless treatment, the solid remains completely in the reaction kettle 2, the output is high, and the discharge is small, especially when dealing with hazardous waste such as industrial waste and medical waste, reducing the emission of pollutants and the movement of materials, which is beneficial to environmental protection. .

Claims

Claim

A waste treatment apparatus comprising a reaction vessel for containing waste for treatment, a stirring device for stirring waste in the reaction vessel, an input port and a discharge port communicating with the reaction vessel, and pressure The adjusting device, wherein the waste processing device further comprises a casing, the reaction vessel is located in the outer casing and has a gap therebetween; and the casing and the reaction vessel are respectively provided with a first a steam injection port and a second steam injection port.

2. The waste treatment apparatus according to claim 1, further comprising a boiler, wherein the boiler is connected to the first steam injection port and the second steam injection port.

The waste disposal apparatus according to claim 1, wherein an exhaust valve is provided in the reaction vessel, and the exhaust valve is connected to an exhaust gas treatment device.

The waste disposal apparatus according to claim 1, wherein an exhaust valve is provided on the outer casing.

5. The waste treatment apparatus according to claim 1, wherein the pressure adjustment device includes a first exhaust pipe that communicates with a lumen of the outer casing, and is connected to the first exhaust pipe and A first pressure regulating valve disposed outside the outer casing.

6. The waste treatment apparatus according to claim 1, wherein the pressure adjustment device further comprises a second exhaust pipe communicating with a lumen of the reaction kettle, and the second exhaust pipe A second pressure regulating valve connected and disposed outside the outer casing.

The waste disposal apparatus according to claim 1 or 2, further comprising control means for controlling said stirring means, pressure adjusting means, and steam injection.

8. The waste disposal apparatus according to claim 7, further comprising a pressure gauge and a thermometer connected to said control device.