Novel sludge pyrohydrolysis treatment device

Abstract

The utility model discloses a novel sludge pyrohydrolysis treatment device which mainly comprises a pyrohydrolysis reactor 1, a sludge feeding pipe 2, a high-pressure steam spray pipe 3, a steam nozzle 4 and an anchor type stirring paddle 5. Sludge enters the pyrohydrolysis reactor 1 through the sludge feeding pipe 2, the high-pressure steam spraying pipe 3 is located in the sludge feeding pipe 2, high-pressure steam enters the sludge feeding pipe 2 through the steam spraying openings 4 in the surface of the high-pressure steam spraying pipe 3, and the steam and the sludge are mixed and pulpified; and the steam transfers heat into the sludge and enters the pyrohydrolysis reactor together to complete the pyrohydrolysis process. According to the thermal hydrolysis treatment device, the steam spraying pipe is arranged in the sludge feeding pipe, so that efficient heat transfer and mixed slurrying of steam and sludge are realized, and efficient thermal hydrolysis of the sludge is realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of sludge treatment, and in particular relates to a novel sludge thermal hydrolysis treatment device. Background Art

[0002] After sewage treatment, a large amount of sludge that is difficult to dispose of will be produced. The annual output of dewatered sludge in my country reaches more than 70 million tons. The incineration technology and composting technology currently used have secondary pollution, low efficiency, environmental pollution and other reasons, and it is necessary to seek resource and energy methods. Thermal hydrolysis-anaerobic digestion is applied to sludge treatment, which can produce energy products after thermal hydrolysis of sludge, which is conducive to the resource utilization of sludge. In this process, the sludge needs to be thermally hydrolyzed first.

[0003] Thermal hydrolysis of sludge refers to heating the sludge in a closed container under certain temperature and pressure conditions to quickly inactivate pathogens, disintegrate sludge flocs, rupture cells, release organic matter, and hydrolyze macromolecules. Thermal hydrolysis can improve the sedimentation performance, dehydration performance, and biodegradability of sludge, thereby effectively improving the efficiency and quality of subsequent anaerobic digestion.

[0004] Conventional thermal hydrolysis devices have the disadvantages of low efficiency and slow heating process. The utility model uses high-pressure steam as a heat source to achieve rapid heat transfer and mixed slurry with sludge, thereby improving the thermal hydrolysis efficiency of sludge. Utility Model Content

[0005] In order to achieve the above purpose, the utility model realizes the purpose of efficient thermal hydrolysis of sludge through a novel sludge thermal hydrolysis treatment device.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a novel sludge thermal hydrolysis treatment device, mainly comprising a thermal hydrolysis reactor, a sludge feed pipe, a high-pressure steam nozzle, a steam nozzle, and an anchor-type stirring paddle. The sludge enters the thermal hydrolysis reactor through the sludge feed pipe, the high-pressure steam nozzle is located inside the sludge feed pipe, and the high-pressure steam enters the sludge feed pipe through the steam nozzle on the surface of the high-pressure steam nozzle. The steam is mixed and slurried with the sludge, and the steam transfers heat to the sludge and enters the thermal hydrolysis reactor together to complete the thermal hydrolysis process.

[0007] Preferably, the thermal hydrolysis reactor mainly includes a thermal hydrolysis reactor, a sludge feeding pipe, a high-pressure steam nozzle, a steam nozzle, and an anchor-type stirring paddle.

[0008] Preferably, the high-pressure steam enters the sludge feeding pipe through the steam nozzles on the surface of the high-pressure steam nozzle.

[0009] Preferably, the high-pressure steam nozzle is located inside the sludge feed pipe, and the steam and sludge are mixed, slurried and heat-transferred, and after uniform slurrying, enter the thermal hydrolysis reactor from the bottom of the sludge feed pipe and are completely mixed.

[0010] Preferably, the diameter of the sludge feeding pipe is 50 to 80 mm.

[0011] Preferably, the diameter of the steam nozzle is half of the sludge feeding pipe.

[0012] Preferably, the diameter of the steam nozzle is 2 to 4 mm.

[0013] Compared with the prior art, the utility model has the following beneficial effects: high-pressure steam enters the sludge feed pipe through the steam nozzle on the surface of the high-pressure steam nozzle, the steam is mixed and slurried with the sludge, the steam transfers heat to the sludge and enters the thermal hydrolysis reactor together to complete the thermal hydrolysis process. The thermal hydrolysis treatment device realizes efficient heat transfer and mixed slurry between steam and sludge by arranging a steam nozzle inside the sludge feed pipe, thereby realizing efficient thermal hydrolysis of the sludge. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a novel sludge thermal hydrolysis treatment device of the utility model.

[0015] In the figure: 1. thermal hydrolysis reactor, 2. sludge feed pipe, 3. high-pressure steam nozzle, 4. steam nozzle, 5. anchor stirring paddle. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] Example 1

[0018] A thermal hydrolysis treatment of coal chemical sludge

[0019] A novel sludge thermal hydrolysis treatment device is applied to the treatment of coal chemical sludge, comprising a thermal hydrolysis reactor 1, a sludge feed pipe 2, a high-pressure steam nozzle 3, a steam nozzle 4, and an anchor stirring paddle 5. The water content of the coal chemical sludge is about 80%. The sludge enters the thermal hydrolysis reactor 1 through the sludge feed pipe 2. The high-pressure steam nozzle 3 is located inside the sludge feed pipe 2. The high-pressure steam enters the sludge feed pipe 2 through the steam nozzle 4 on the surface of the high-pressure steam nozzle 3. The ratio of steam to sludge is 3:1 to 2:1. The steam and the sludge are mixed and slurried. The steam transfers heat to the sludge and enters the thermal hydrolysis reactor together to complete the thermal hydrolysis process. The thermal hydrolysis treatment device realizes efficient heat transfer and mixed slurry between steam and sludge by arranging a steam nozzle inside the sludge feed pipe, thereby realizing efficient thermal hydrolysis of the sludge, and the reaction residence time of the thermal hydrolysis can be reduced by more than half.

[0020] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel sludge thermal hydrolysis treatment device, mainly comprising a thermal hydrolysis reactor (1), a sludge feeding pipe (2), a high-pressure steam nozzle (3), a steam nozzle (4), and an anchor-type stirring blade (5), characterized in that: The sludge enters the thermal hydrolysis reactor (1) through a sludge feeding pipe (2); a high-pressure steam nozzle (3) is located inside the sludge feeding pipe (2); high-pressure steam enters the sludge feeding pipe (2) through a steam nozzle (4) on the surface of the high-pressure steam nozzle (3); the steam mixes with the sludge and slurries it; the steam transfers heat to the sludge and the sludge enters the thermal hydrolysis reactor together to complete the thermal hydrolysis process.

2. A novel sludge thermal hydrolysis treatment device according to claim 1, characterized in that: The high-pressure steam nozzle (3) is located inside the sludge feed pipe (2), and the steam and sludge are mixed, slurried and heat-transferred. After being uniformly slurried, the sludge enters the thermal hydrolysis reactor from the bottom of the sludge feed pipe and is completely mixed.

3. A novel sludge thermal hydrolysis treatment device according to claim 1, characterized in that: The diameter of the sludge feeding pipe is 50 to 80 mm.

4. A novel sludge thermal hydrolysis treatment device according to claim 1, characterized in that: The diameter of the steam spray pipe is half of the sludge feeding pipe.

5. A novel sludge thermal hydrolysis treatment device according to claim 1, characterized in that: The diameter of the steam nozzle is 2 to 4 mm.

Images