Hydrothermal carbonization system for continuous reaction of sludge
By designing a hydrothermal carbonization system for continuous reaction of sludge, using coil heating and solid-liquid separation equipment, the problem of traditional hydrothermal carbonization is difficult to produce continuously, and a low-cost and efficient hydrothermal carbonization process is achieved.
Patent Information
- Application Number
- CN202422341130.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-25
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-09-25
AI Technical Summary
It is difficult to achieve continuous production of hydrothermal carbon in traditional reactors, and it has high energy consumption, complex structure and low cost.
Design a hydrothermal carbonization system for continuous reaction of sludge, including the original sludge silt, feed pump, continuous reactor, reduced pressure buffer silt, discharge pump, hydrothermal carbon silt and solid-liquid separation room, high-pressure steam heating is used for high-pressure steam heating, combined with deodorization system and solid-liquid separation equipment, to achieve continuous hydrothermal carbonization of sludge.
Continuous hydrothermal carbonization production of sludge is achieved, system costs are reduced, structure is simplified, and energy efficiency is improved.
Smart Images
Figure CN223292427U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of resource utilization of organic solid waste, in particular to a hydrothermal carbonization system for continuous reaction of sludge. Background Art
[0002] Hydrothermal carbonization, a carbon with a more stable structure, higher carbon value, stronger activity, and superior quality, has a wide range of applications in materials, environmental protection, energy, and other fields. However, traditional hydrothermal carbonization reactors are difficult to achieve continuous production, and they also have high energy consumption, complex structures, and high costs. The development of low-cost, low-energy, and simple-structured continuous hydrothermal carbonization systems has become a focus of industry attention. Utility Model Content
[0003] In order to solve the above technical problems, the utility model provides a hydrothermal carbonization system for continuous reaction of sludge, which can realize continuous production, has a simple system structure and reduces costs.
[0004] The technical solution of the utility model: a hydrothermal carbonization system for continuous reaction of sludge, which includes a raw mud bin, a feed pump, a continuous reactor, a pressure reduction buffer bin, a discharge pump, a hydrothermal carbon bin, and a solid-liquid separation room connected in sequence by pipelines, and is characterized in that the continuous reactor includes a reactor shell and a coil arranged inside the reactor shell, a sludge feed port and a sludge discharge port are respectively provided on the front and rear end side walls of the reactor shell, a high-pressure steam inlet is provided on the top of the reactor shell, a condensate discharge port is provided on the bottom, and an exhaust port is also provided on the reactor shell.
[0005] It is further characterized in that the coil is arranged vertically, the high-pressure steam inlet is opened at one end close to the sludge feed port, and the condensate discharge port is opened at one end close to the sludge discharge port;
[0006] The bottom of the reactor shell is provided with an inclined surface, and the condensate discharge port is located at the lowest point of the inclined surface;
[0007] The decompression buffer chamber and the solid-liquid separation chamber are both connected to a deodorization system, which includes acid-base washing, chemical oxidation, biological trickling filtration, and activated carbon adsorption;
[0008] The solid-liquid separation equipment in the solid-liquid separation room includes a centrifugal dehydrator, a belt dehydrator, and a plate-and-frame dehydrator;
[0009] A symmetrically arranged fixed outer sleeve is installed on both inner walls of the reactor shell, a telescopic tube is provided inside the fixed outer sleeve, a fixed half ring is fixed to one end of the telescopic tube located outside the fixed outer sleeve, and two corresponding fixed half rings are connected by a bolt mechanism to fix the coil;
[0010] The outer wall of the reactor shell is provided with a heat-insulating layer.
[0011] After adopting the utility model, the sludge is sent to the continuous reactor, and when passing through the coil, it is heated by the high-pressure steam passed into the reactor shell to produce a hydrothermal carbonization reaction, and then enters the hydrothermal carbon bin through the discharge pump, and is then pumped into the solid-liquid separation room for mud-liquid separation to obtain hydrothermal carbon and filtrate respectively. The coil in the reactor shell allows the sludge to fully contact with the high-pressure steam, and the condensed water formed by the high-pressure steam can be discharged from the condensate discharge port. The entire treatment process can be carried out continuously, the system structure is simple, and the cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a schematic diagram of the utility model system;
[0013] Figure 2 Schematic diagram of a continuous reactor;
[0014] Figure 3 Schematic diagram of the two fixed half rings. DETAILED DESCRIPTION
[0015] See Figures 1 to 3 As shown, a hydrothermal carbonization system for continuous sludge reaction includes a raw sludge bin 1, a feed pump 2, a continuous reactor 3, a decompression buffer bin 4, a discharge pump 5, a hydrothermal carbonization bin 6, and a solid-liquid separation chamber 7, all connected in sequence by pipelines. The continuous reactor 3 includes a reactor shell 3-1 and a coil 3-2 disposed within the reactor shell 3-1. A sludge feed port 3-3 and a sludge discharge port 3-4 are respectively disposed on the front and rear sidewalls of the reactor shell 3-1. A high-pressure steam inlet 3-5 is provided at the top of the reactor shell 3-1, a condensate discharge port 3-6 is provided at the bottom, and an exhaust port 3-7 is also provided on the reactor shell 3-1. The outer wall of the reactor shell is provided with an insulation layer to provide good thermal insulation and reduce energy consumption.
[0016] The coil 3-2 is arranged vertically, and the high-pressure steam inlet 3-5 is opened at one end close to the sludge feed port 3-3, and the condensate discharge port 3-6 is opened at one end close to the sludge discharge port 3-4; before the sludge enters the hydrothermal carbonization reactor pipeline, high-pressure steam is first passed into the reactor shell 3-1 to make the temperature of the entire reactor shell 3-1 reach the set temperature value and stabilize, and then the sludge enters the coil 3-2. The sludge in the coil 3-2 is gradually heated during the transportation process and undergoes a hydrothermal carbonization reaction, and is discharged from the sludge discharge port 3-4, and the high-pressure steam becomes condensed water. In order to prevent the pressure in the reactor shell 3-1 from being too high, an exhaust port 3-7 is set to exhaust. In order to allow the condensed water to be discharged smoothly, a slope is set at the bottom of the reactor shell 3-1 and the condensate discharge port 3-6 is located at the lowest point of the slope, allowing the condensed water to flow smoothly toward the condensate discharge port 3-6 and be discharged.
[0017] The high-temperature mud that has completed the hydrothermal carbonization reaction is temporarily stored in the decompression buffer chamber 4, and then enters the hydrothermal carbon chamber 6 through the discharge pump 5. It is then pumped into the solid-liquid separation room 7 for mud-liquid separation to obtain hydrothermal carbon and filtrate respectively. The decompression buffer chamber 4 and the solid-liquid separation room 7 are both connected to the deodorization system 8 through the induced draft fan. The deodorization system includes acid and alkali washing, chemical oxidation, biological trickling, and activated carbon adsorption. The solid-liquid separation equipment in the solid-liquid separation room 7 includes a centrifugal dehydrator, a belt dehydrator, and a plate and frame dehydrator. 9 in the figure is a condensate recovery device. The condensate produced in the continuous reactor 3 is relatively clean and can be recycled without treatment; 10 in the figure is a filtrate recovery system.
[0018] Symmetrically arranged fixed outer sleeves 3-8 are respectively installed on the inner walls on both sides of the reactor shell 3-1, and a telescopic tube 3-9 is arranged inside the fixed outer sleeve 3-8. A fixed half ring 3-10 is fixed to one end of the telescopic tube 3-9 located outside the fixed outer sleeve. The two corresponding fixed half rings 3-10 are connected by a bolt mechanism 3-11 to fix the coil 3-2 to prevent the coil 3-1 from shaking and ensure stability. According to the length of the coil, a reasonable number of fixed half rings 3-10 can be set to fix it, and a locking screw 3-12 is set on the fixed outer sleeve 3-8.
Claims
1. A hydrothermal carbonization system for continuous sludge reaction, comprising a raw sludge bin, a feed pump, a continuous reactor, a pressure reduction buffer bin, a discharge pump, a hydrothermal carbonization bin, and a solid-liquid separation chamber connected in sequence by pipelines, characterized in that: The continuous reactor includes a reactor shell and a coil arranged inside the reactor shell. A sludge feed port and a sludge discharge port are respectively provided on the front and rear end side walls of the reactor shell. A high-pressure steam inlet is provided at the top of the reactor shell, a condensate discharge port is provided at the bottom, and an exhaust port is also provided on the reactor shell.
2. The hydrothermal carbonization system for continuous sludge reaction according to claim 1, characterized in that: The coil is arranged vertically, the high-pressure steam inlet is opened at one end close to the sludge feed port, and the condensate discharge port is opened at one end close to the sludge discharge port.
3. The hydrothermal carbonization system for continuous sludge reaction according to claim 1, characterized in that: The bottom of the reactor shell is provided with an inclined surface, and the condensate discharge port is located at the lowest point of the inclined surface.
4. The hydrothermal carbonization system for continuous sludge reaction according to claim 1, characterized in that: The decompression buffer chamber and the solid-liquid separation chamber are both connected to a deodorization system, which includes acid-base washing, chemical oxidation, biological trickling filtration, and activated carbon adsorption.
5. The hydrothermal carbonization system for continuous sludge reaction according to claim 1, characterized in that: The solid-liquid separation equipment in the solid-liquid separation room includes a centrifugal dehydrator, a belt dehydrator, and a plate-and-frame dehydrator.
6. The hydrothermal carbonization system for continuous sludge reaction according to claim 1, characterized in that: Symmetrically arranged fixed outer sleeves are respectively installed on the inner walls of both sides of the reactor shell, and a telescopic tube is provided inside the fixed outer sleeve. A fixed half ring is fixed at one end of the telescopic tube located outside the fixed outer sleeve. The two corresponding fixed half rings are connected by a bolt mechanism to fix the coil.
7. The hydrothermal carbonization system for continuous sludge reaction according to claim 1, characterized in that: The outer wall of the reactor shell is provided with a heat-insulating layer.