Full-dose moist heat hydrolysis device

Abstract

The utility model relates to the technical field of organic solid waste treatment, and provides a full-dose moist heat hydrolysis device which comprises a shell, a steam inlet and a liquid phase outlet are arranged at the lower part of the shell, a tail gas port is arranged at the top end of the shell, a screen drum is rotatably connected in the shell, a motor is arranged at the top end of the shell, and the motor is connected with the screen drum through a connecting frame. The shell is provided with the feeding pipe and the residue discharging pipe which are communicated with the screen mesh cylinder, organic solid waste does not need to be pre-sorted and coarsely crushed and then directly enters the screen mesh cylinder, disturbance stirring, steam heating and hydrolysis modification are carried out under low-speed rotation, and then solid-liquid separation is carried out on remaining solid residues under high-speed rotation. The method is simple and convenient to operate and high in integration level, and the recovery rate and subsequent resource benefits of organic matters are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of organic solid waste treatment, in particular to a full-scale wet thermal hydrolysis device. Background Art

[0002] Due to an incomplete waste sorting system in my country, the composition of organic solid waste is extremely complex, mixed with large amounts of fiber, cans, tableware, ceramics, and other household waste. To obtain a purer organic slurry, organic solid waste typically undergoes multiple pretreatment steps, including manual sorting, coarse crushing, mechanical separation, heating, and solid-liquid separation. This results in a complex pretreatment system with numerous processes, a wide variety of equipment, and complex operations and maintenance. Utility Model Content

[0003] The purpose of the utility model is to provide a full-scale wet-heat hydrolysis device to solve the above-mentioned technical problems, with simple operation, high integration, and improved organic matter recovery rate and subsequent resource benefits.

[0004] The utility model is realized through the following technical solutions: a full-quantity wet hot water hydrolysis device, comprising a shell, a steam inlet and a liquid phase outlet are provided at the lower part of the shell, an exhaust port is provided at the top of the shell, a screen cylinder is rotatably connected inside the shell, a motor is installed at the top of the shell, the motor is connected to the screen cylinder through a connecting frame, and the shell is provided with a feed pipe and a slag discharge pipe connected to the screen cylinder.

[0005] Furthermore, a ring rail is provided between the inner wall of the shell and the outer wall of the screen cylinder.

[0006] Preferably, at least two circular rails are vertically arranged.

[0007] Furthermore, a backflush pipe for flushing the screen cylinder is provided between the inner wall of the shell and the outer wall of the screen cylinder.

[0008] Furthermore, the rotation speed of the screen drum is 50 to 1000 r / min.

[0009] Furthermore, the lower end of the screen cylinder is funnel-shaped, and the lower end of the screen cylinder is gap-matched with the slag discharge pipe.

[0010] Furthermore, a reflux port is provided at the top of the shell.

[0011] Furthermore, a plurality of filter holes are evenly arranged on the screen cylinder, and the pore diameter of the filter holes is 1 to 5 mm.

[0012] The utility model has at least the following advantages and beneficial effects:

[0013] (1) By rotating the connected screen drum in the shell, the organic solid waste does not need to be pre-sorted. After coarse crushing, it directly enters the screen drum, is disturbed and stirred at low speed, and steam heated and hydrolyzed and modified. Then, the remaining solid residue is subjected to solid-liquid separation at high speed to obtain an organic slurry with uniform particle size and high purity and a high-dryness sorting residue. The operation is simple and the integration is high, which effectively improves the recovery rate of organic matter and the subsequent resource benefits;

[0014] (2) By setting a backflush pipe between the shell and the screen cylinder, the screen cylinder is regularly blown and cleaned, effectively avoiding impurities from clogging the screen cylinder and ensuring the stability of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a structural diagram of a full-scale wet thermal hydrolysis device provided by the utility model;

[0017] Icons: 1-shell, 11-steam inlet, 12-liquid outlet, 13-exhaust outlet, 14-feed pipe, 15-slag discharge pipe, 16-reflux liquid pipe, 2-screen cylinder, 3-motor, 30-connecting frame, 4-ring rail, 5-backflush pipe. DETAILED DESCRIPTION

[0018] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0020] Example

[0021] like Figure 1As shown, in this embodiment, a full-quantity wet hot hydrolysis device is mainly disclosed. The device operates smoothly, stably, has high integration, and has strong applicability. It is suitable for the comprehensive treatment of organic solid waste such as kitchen waste, restaurant kitchen waste, and dead livestock and poultry. It includes a shell 1, a steam inlet 11 and a liquid phase outlet 12 are provided at the lower part of the shell 1, an exhaust port 13 is provided at the top of the shell 1, a screen drum 2 is rotatably connected in the shell 1, a motor 3 is installed at the top of the shell 1, the motor 3 is connected to the screen drum 2 through a connecting frame 30, and the shell 1 is provided with a feed pipe 14 and a slag discharge pipe 15 connected to the screen drum 2; The shell 1 and the screen drum 2 can adopt a coaxially arranged cylindrical structure. The connecting frame 30 can be a frame structure, fixed to the upper part of the screen drum 2, and connected to the output shaft of the motor 3; after the organic solid waste is coarsely crushed by the double-shaft crusher, it enters the screen drum 2 inside the shell 1 through the feed pipe 14 through the screw conveyor, without pre-sorting. When the set liquid level is reached, saturated steam is introduced into the shell 1 through the steam inlet 11 connected to the steam boiler or the municipal steam network to heat the material. At the same time, the screen drum 2 is driven by the motor 3 to rotate at a low speed. Stir the material and carry out wet heat hydrolysis reaction after reaching the set reaction temperature. The temperature of wet heat hydrolysis reaction is 60-160℃, the pressure is 0-0.8MPa, and the wet heat reaction time is 20-60min (if the reaction temperature of the wet heat hydrolysis device is 100-160℃, the pressure is 0.1-0.8MPa, after the wet heat hydrolysis reaction, the temperature is flashed down to below 100℃ and then solid-liquid separation is carried out to facilitate waste heat recovery); most of the organic matter is accelerated hydrolysis modification in the device, converted from solid to liquid, and the viscosity is reduced. After the reaction is completed, it is discharged through the liquid phase outlet 12 basically empties the organic slurry in the device into the subsequent buffer tank, and then the motor 3 drives the screen drum 2 to rotate at high speed, so that the remaining residue is further separated from the solid and liquid under the action of centrifugal force, and finally obtains organic slurry with uniform particle size and high purity and high dryness sorting residue, which significantly improves the recovery rate of organic matter and subsequent resource benefits; the device can not only separate solid residue and organic slurry in organic solid waste, but also transfer organic matter from solid to liquid in large quantities, and can also convert large-molecule organic matter in organic solid waste into small-molecule organic matter, realizing the hydrolysis modification of organic matter.

[0022] Furthermore, in a specific implementation, a ring rail 4 is provided between the inner wall of the above-mentioned shell 1 and the outer wall of the screen cylinder 2 provided in the embodiment of the utility model; preferably, at least two ring rails 4 are vertically arranged. Specifically, the ring rail 4 can adopt the bearing structure in the prior art, and is composed of an inner ring and an outer ring connected by sliding balls, wherein the inner ring is connected to the outer wall of the screen cylinder 2, and the outer ring is connected to the inner wall of the shell 1, so as to realize the relative rotation of the screen cylinder 2 and the shell 1, and at the same time provide support for the screen cylinder 2 to ensure the stability and safety of operation.

[0023] Furthermore, in the specific implementation, a back-blowing pipe 5 for blowing the screen drum 2 is provided between the inner wall of the above-mentioned shell 1 and the outer wall of the screen drum 2 provided in the embodiment of the present invention; specifically, the back-blowing pipe 5 can be arranged vertically in a single piece, or a plurality of back-blowing holes can be arranged vertically at even intervals along the circumference of the screen drum 2; the back-blowing pipe can be half-pipe welded to the inner wall of the shell 1, and a plurality of back-blowing holes are vertically opened on the side of the cylinder wall facing the screen drum 2. The back-blowing holes can be a trumpet mouth with a large outside and a small inside to prevent impurities from entering the back-blowing pipe 5; the back-blowing pipe 5 is connected to compressed air or high-temperature hot liquid. At the same time, the motor 3 drives the screen drum 2 to rotate to realize the blowing of the screen drum 2, effectively avoiding impurities from clogging the screen drum 2 and ensuring the stability of operation; it should be noted that, in order to avoid structural interference, the back-blowing pipe 5 can be arranged between the ring rails 4. In addition, the back-blowing holes arranged vertically on the back-blowing pipe 5 correspond one to one to the filter holes arranged vertically on the screen drum 2 to ensure sufficient and effective blowing.

[0024] Furthermore, in specific implementation, the rotation speed of the above-mentioned screen drum 2 provided in the embodiment of the present invention is 50 to 1000 r / min; specifically, the motor 3 can drive the screen drum 2 to rotate forward or reverse according to the timing requirements. The rotation speed (low speed) of the internal screen drum 2 in the thermal hydrolysis reaction stage is 50 to 100 r / min. The main purpose is to disturb and stir the organic solid waste to suspend it in the hot liquid. Under the turbulence and scouring effect generated by the machinery and the infiltration and dispersion effect of the high-temperature hot liquid, the slurries rub and pull each other, which increases the effective area of slurry hydrolysis, facilitates the hydrolysis reaction of organic matter, and improves the comprehensive hydrolysis rate of organic matter; and in the solid-liquid separation stage, its rotation speed (high speed) is 500 to 1000 r / min, which can not only achieve a better solid-liquid separation effect and ensure that the sorted solid residue meets the subsequent disposal requirements (water content less than 50%), but also avoid impurities larger than the aperture from clogging the screen holes or entering the organic slurry, thereby reducing the maintenance cost of the device.

[0025] Furthermore, in a specific implementation, the lower end of the above-mentioned screen cylinder 2 provided in the embodiment of the present invention is funnel-shaped, and the lower end of the screen cylinder 2 is gap-fitted with the slag discharge pipe 15, which does not affect the rotational movement of the screen cylinder 2, and at the same time ensures that the solid residue can be smoothly discharged through the slag discharge pipe 15; in addition, the top of the screen cylinder 2 is open, and the feed pipe 14 is directly installed above the opening.

[0026] Furthermore, in a specific implementation, a reflux liquid port is provided at the top of the above-mentioned shell 1 provided in the embodiment of the utility model; it should be noted that, due to the different moisture content of the organic solid waste to be treated, by providing a reflux liquid port, an appropriate amount of high-temperature waste liquid is refluxed, so that the filling rate during heating is always maintained at 45% to 70%, and the filling rate during slag discharge is about 1%.

[0027] Furthermore, in a specific implementation, a plurality of filter holes are evenly arranged on the screen cylinder 2 provided in the embodiment of the present invention, and the pore size of the filter holes is 1 to 5 mm. Preferably, the filter holes can be set as strip holes and round holes.

[0028] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A full-scale wet thermal hydrolysis device, characterized in that: The invention comprises a shell (1), wherein a steam inlet (11) and a liquid phase outlet (12) are provided at the lower portion of the shell (1), an exhaust port (13) is provided at the top end of the shell (1), a screen drum (2) is rotatably connected in the shell (1), a motor (3) is installed at the top end of the shell (1), and the motor (3) is connected to the screen drum (2) via a connecting frame (30), and the shell (1) is provided with a feed pipe (14) and a slag discharge pipe (15) which are in communication with the screen drum (2).

2. A full-quantity wet thermal hydrolysis device according to claim 1, characterized in that: A ring rail (4) is provided between the inner wall of the shell (1) and the outer wall of the screen cylinder (2).

3. A full-quantity wet thermal hydrolysis device according to claim 2, characterized in that: At least two ring rails (4) are arranged vertically.

4. A full-quantity wet thermal hydrolysis device according to claim 1, characterized in that: A backflush pipe (5) for flushing the screen cylinder (2) is provided between the inner wall of the housing (1) and the outer wall of the screen cylinder (2).

5. The full-quantity wet thermal hydrolysis device according to claim 1, characterized in that: The rotation speed of the screen drum (2) is 50-1000 r / min.

6. A full-quantity wet thermal hydrolysis device according to claim 1, characterized in that: The lower end of the screen cylinder (2) is funnel-shaped, and the lower end of the screen cylinder (2) is clearance-matched with the slag discharge pipe (15).

7. The full-quantity wet thermal hydrolysis device according to claim 1, characterized in that: The top end of the shell (1) is provided with a reflux liquid port.

8. The full-quantity wet thermal hydrolysis device according to claim 1, characterized in that: The screen cylinder (2) is evenly provided with a plurality of filter holes, and the pore diameter of the filter holes is 1 to 5 mm.

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