High-temperature and high-pressure pretreatment device

Abstract

The utility model relates to a high-temperature and high-pressure pretreatment device, which belongs to the technical field of straw recycling steam treatment and comprises a tank body, a feeding flange pipe communicated with the tank body is arranged at the upper end of the tank body, and a discharging flange pipe communicated with the tank body is arranged at the lower end of the tank body. A plurality of steam flange pipes communicated with the tank body are arranged at the upper end, the upper part, the middle part and the lower part of the tank body, a plurality of annularly distributed supporting leg pipes are arranged on the side edge of the lower part of the tank body, and an overhaul bin gate is arranged at the front end of the tank body; and an overhaul communication flange pipe which is in sealed bolt connection and fixation with the overhaul bin door is arranged between the overhaul bin door and the tank body. The device has the characteristics of simple structure, high temperature resistance, high pressure resistance and good operation stability. The problem of high-temperature and high-pressure pretreatment of straw raw materials in the steam treatment process is solved. The effects of short process treatment period, no pollution to the environment and low energy consumption are achieved, and meanwhile the later straw enzymolysis saccharification efficiency is improved through high-temperature and high-pressure pretreatment.

Description

Technical Field

[0001] This utility model relates to the field of steam treatment technology for straw recycling, specifically to a high-temperature and high-pressure pretreatment device. Background Technology

[0002] In the past, crop straw was mostly used as fuel. However, with the continuous improvement of people's living standards in my country, as well as the development of the rural economy and the improvement of energy supply, farmers have gradually reduced their use of straw in recent years, resulting in a growing amount of surplus crop straw. The indiscriminate dumping and burning of large amounts of surplus straw has caused numerous social, economic, and ecological problems, including air pollution, soil mineralization, fires, and traffic congestion. At the same time, straw, as a renewable energy source, contains enormous biomass energy. Its resource utilization is of great significance for energy conservation, ecological environment improvement, and achieving sustainable social development.

[0003] Biogas production from straw involves using crop straw such as rice, corn, and peanuts as raw materials. After pretreatment, the straw is added to a biogas digester or biogas tank for anaerobic fermentation to produce biogas and organic fertilizer. The pretreatment of straw is crucial, as it affects the decomposition efficiency and biogas production rate. Traditional pretreatment processes include crushing the straw and adding microbial agents for composting. However, straw cells are very dense, with highly lignified cell walls. During straw fermentation, the hydrolysis of lignocellulose is slow and to a low degree, thus affecting subsequent acidification and gasification processes. Summary of the Invention

[0004] This invention addresses the shortcomings of existing technologies by providing a high-temperature, high-pressure pretreatment device. This device features a simple structure, high temperature and pressure resistance, and good operational stability. It solves the problem of high-temperature, high-pressure pretreatment of straw raw materials during steam treatment. This results in a short processing cycle, no environmental pollution, and low energy consumption. Furthermore, the high-temperature, high-pressure pretreatment improves the efficiency of subsequent straw enzymatic hydrolysis and saccharification.

[0005] The above-mentioned technical problems of this utility model are mainly solved by the following technical solutions:

[0006] A high-temperature and high-pressure pretreatment device includes a tank body. The upper end of the tank body is provided with an inlet flange pipe communicating with the tank body, and the lower end of the tank body is provided with an outlet flange pipe communicating with the tank body. The upper end, upper part, middle part and lower part of the tank body are provided with a plurality of steam flange pipes communicating with the tank body. The lower side of the tank body is provided with a plurality of support leg pipes distributed in a ring. The front end of the tank body is provided with a maintenance compartment door. The maintenance compartment door is connected to the tank body by a maintenance connecting flange pipe that is sealed and fixed to the maintenance compartment door with bolts.

[0007] Preferably, the side of the maintenance connecting flange pipe is provided with a door shaft sleeve seat, the door shaft sleeve seat is provided with a door rotating rod that is movably inserted and connected to the door shaft sleeve seat, the upper end of the maintenance door is provided with a limiting screw that is inserted and connected to the door rotating rod, and the upper end of the door rotating rod is provided with several locking nuts that are threadedly connected to the limiting screw.

[0008] Preferably, the middle of the tank is provided with a pair of thermometer extension tubes that are symmetrically distributed in a mirror pattern and connected to the tank.

[0009] Preferably, a pressure plate is provided at the lower end of the discharge flange pipe, and a gate valve is provided between the pressure plate and the discharge flange pipe.

[0010] Preferably, a wire mesh disc is provided between the gate valve and the pressure plate.

[0011] Preferably, the feed flange pipe is provided with lifting lugs on both sides, which are integrally welded and fixed to the tank body.

[0012] Preferably, the upper end of the tank is provided with a pressure gauge mounting base.

[0013] Preferably, a supporting angle steel is provided between the lower parts of two adjacent support leg tubes.

[0014] Preferably, the lower side of the maintenance compartment door is provided with a nameplate holder that is integrally welded and fixed to the tank body.

[0015] This invention can achieve the following effects:

[0016] This invention provides a high-temperature and high-pressure pretreatment device, which, compared with existing technologies, features a simple structure, high temperature and pressure resistance, and good operational stability. It solves the problem of high-temperature and high-pressure pretreatment of straw raw materials during steam treatment. This achieves a short processing cycle, no environmental pollution, and low energy consumption. Simultaneously, the high-temperature and high-pressure pretreatment improves the efficiency of subsequent straw enzymatic hydrolysis and saccharification. Attached Figure Description

[0017] Figure 1 This is a front view structural diagram of this utility model.

[0018] Figure 2 This is a top view of the structure of this utility model.

[0019] In the diagram: 1. Tank body; 2. Limiting screw; 3. Feed flange pipe; 4. Locking nut; 5. Door rotating rod; 6. Steam flange pipe; 7. Thermometer extension mounting pipe; 8. Door shaft sleeve seat; 9. Nameplate bracket; 10. Maintenance door; 11. Discharge flange pipe; 12. Gate valve; 13. Wire mesh disc; 14. Pressure plate; 15. Support angle steel; 16. Support leg pipe; 17. Pressure gauge mounting base; 18. Lifting lug; 19. Maintenance connecting flange pipe. Detailed Implementation

[0020] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0021] Example: Figure 1 and Figure 2 As shown, a high-temperature and high-pressure pretreatment device includes a tank body 1. The upper end of the tank body 1 is provided with an inlet flange pipe 3 and a pressure gauge mounting base 17 connected to the tank body 1. Lifting lugs 18, integrally welded and fixed to the tank body 1, are provided on both sides of the inlet flange pipe 3. The lower end of the tank body 1 is provided with an outlet flange pipe 11 connected to the tank body 1. A pressure plate 14 is provided at the lower end of the outlet flange pipe 11. A gate valve 12 is provided between the pressure plate 14 and the outlet flange pipe 11. A wire mesh disc 13 is provided between the gate valve 12 and the pressure plate 14. A pair of mirror-symmetrically distributed thermometer extension mounting pipes 7 connected to the tank body 1 are provided in the middle of the tank body 1. Several steam flange pipes 6 connected to the tank body 1 are provided at the upper end, upper part, middle part, and lower part of the tank body 1. Four annularly distributed support leg pipes 16 are provided on the lower side of the tank body 1, with supporting angle steel 15 between the lower parts of two adjacent support leg pipes 16. The front end of the tank body 1 is provided with a maintenance door 10, and the lower side of the maintenance door 10 is provided with a nameplate frame 9 that is integrally welded and fixed to the tank body 1. A maintenance connecting flange pipe 19 is provided between the maintenance door 10 and the tank body 1 and is fixed to the maintenance door 10 with a sealing bolt. The side of the maintenance connecting flange pipe 19 is provided with a door shaft sleeve seat 8, and a door rotating rod 5 is provided on the door shaft sleeve seat 8 and is movably inserted and connected to the door shaft sleeve seat 8. The upper end of the maintenance door 10 is provided with a limiting screw 2 that is inserted into the door rotating rod 5, and the upper end of the door rotating rod 5 is provided with several locking nuts 4 that are threadedly connected to the limiting screw 2.

[0022] In summary, this high-temperature and high-pressure pretreatment device features a simple structure, high temperature and pressure resistance, and good operational stability. It solves the problem of high-temperature and high-pressure pretreatment of straw raw materials during steam treatment. It achieves a short processing cycle, no environmental pollution, and low energy consumption, while also improving the efficiency of subsequent straw enzymatic hydrolysis and saccharification through high-temperature and high-pressure pretreatment.

[0023] It will be apparent to those skilled in the art that this invention is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0024] In summary, the above description is only a specific embodiment of the present utility model, but the structural features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. A high-temperature and high-pressure pretreatment device, characterized in that: The tank includes a tank body (1), the upper end of which is provided with a feed flange pipe (3) communicating with the tank body (1), the lower end of which is provided with a discharge flange pipe (11) communicating with the tank body (1), the upper end, upper part, middle part and lower part of the tank body (1) are provided with several steam flange pipes (6) communicating with the tank body (1), the lower side of the tank body (1) is provided with several support leg pipes (16) arranged in a ring, the front end of the tank body (1) is provided with a maintenance compartment door (10), and the maintenance compartment door (10) and the tank body (1) are provided with a maintenance connecting flange pipe (19) that is sealed and bolted to the maintenance compartment door (10).

2. The high-temperature and high-pressure pretreatment device according to claim 1, characterized in that: The inspection and connection flange pipe (19) is provided with a door shaft sleeve seat (8) on its side. The door shaft sleeve seat (8) is provided with a door rotating rod (5) that is movably inserted and connected to the door shaft sleeve seat (8). The upper end of the inspection door (10) is provided with a limiting screw (2) that is inserted and connected to the door rotating rod (5). The upper end of the door rotating rod (5) is provided with several locking nuts (4) that are threadedly connected to the limiting screw (2).

3. The high-temperature and high-pressure pretreatment device according to claim 1, characterized in that: The tank (1) is provided with a pair of thermometer extension installation tubes (7) that are symmetrically distributed in a mirror pattern and connected to the tank (1).

4. The high-temperature and high-pressure pretreatment device according to claim 1, characterized in that: The lower end of the discharge flange pipe (11) is provided with a pressure plate (14), and a gate valve (12) is provided between the pressure plate (14) and the discharge flange pipe (11).

5. The high-temperature and high-pressure pretreatment device according to claim 4, characterized in that: A wire mesh disc (13) is provided between the gate valve (12) and the pressure plate (14).

6. The high-temperature and high-pressure pretreatment device according to claim 1, characterized in that: The feed flange pipe (3) is provided with lifting lugs (18) on both sides, which are integrally welded and fixed to the tank body (1).

7. The high-temperature and high-pressure pretreatment device according to claim 1, characterized in that: The upper end of the tank (1) is provided with a pressure gauge mounting base (17).

8. The high-temperature and high-pressure pretreatment device according to claim 1, characterized in that: A supporting angle steel (15) is provided between the lower parts of two adjacent support leg pipes (16).

9. The high-temperature and high-pressure pretreatment device according to claim 1, characterized in that: The lower side of the maintenance compartment door (10) is provided with a nameplate frame (9) that is integrally welded and fixed to the tank body (1).

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