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Sludge steam explosion decomposition method and sludge steam explosion decomposition machine for implementing the method

A sludge and steam explosion technology, applied in the pyrolysis treatment of sludge and other directions, can solve the problems of high operation and maintenance costs, incomplete treatment, complicated processes, etc., and achieve low operation and maintenance costs, thorough treatment and short process. Effect

Active Publication Date: 2016-06-22
JINAN MIDUOTAN NEW ENERGY TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a sludge steam explosion decomposition method and a sludge steam explosion decomposition machine for implementing the method, in order to solve the problems of complex process, incomplete treatment, complex equipment, high operation and maintenance costs in the prior art question

Method used

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  • Sludge steam explosion decomposition method and sludge steam explosion decomposition machine for implementing the method

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Effect test

Embodiment 1

[0028] Such as figure 1 As shown, the sludge steam explosion decomposition machine in this embodiment is a vertical sludge steam explosion decomposition machine. The vertical sludge steam explosion decomposition machine includes a vertical shell 1, the main body of which is cylindrical, and a feed port 2 is arranged on the top of the vertical shell 1, and a sealing cover 1 is arranged on the feed port 2. The bottom of the casing 1 is provided with a discharge port 8 and a steam pipe 5 . A discharge valve 9 is arranged on the discharge port 8 . The steam pipe 5 vertically extends upward from the center of the bottom of the casing 1 to 1 / 2~3 / 5 of the height of the casing. The top of the steam pipe 5 is closed, and several ventilation holes 6 are evenly arranged on the steam pipe 5 . One end of the steam pipe 5 located outside the housing 1 communicates with the steam generating device.

[0029] A pressure gauge 3 is provided on the side wall of the casing 1 0.05-0.15m away fr...

Embodiment 2

[0032] Such as figure 2 As shown, the sludge steam explosion decomposition machine in this embodiment is a horizontal sludge steam explosion decomposition machine. The horizontal sludge steam explosion decomposition machine includes a horizontal shell 1, the main body of which is cylindrical, and the right end of the horizontal (horizontal) shell 1 is provided with a feed port 2, and a seal is set on the feed port 2. Cover 1. A discharge port 8 is provided at the bottom of the left end surface of the housing 1 , and a discharge valve 9 is provided on the discharge port 8 . The center of the left end surface of the casing 1 is provided with a steam pipe 5, which extends horizontally from the center of the left end surface of the casing 1 to the right to 1 / 2~3 / 5 of the length of the casing 1, and the top of the steam pipe 5 is closed. A number of ventilation holes 6 are uniformly arranged on the steam pipe 5 . One end of the steam pipe 5 located outside the housing 1 communi...

Embodiment 3

[0036] When adopting the sludge steam explosion decomposition machine of the embodiment of the present invention 1 to process sludge, first put the sludge with a moisture content of 40% into the sludge steam explosion decomposition machine, then close the feed inlet, close the discharge valve, and feed the steam to the steam explosion decomposition machine. Steam is introduced into the explosive decomposer; the sludge is steam-cooked at a temperature of 300°C and a pressure of 2.5Mpa, and the organic components of macromolecules are degraded. Working together with the material to complete the physical energy release process, the vapor phase medium in the material is ejected and expands rapidly instantly, and at the same time, the high-temperature liquid water in the material rapidly boils to form flash evaporation, which makes insect eggs, pathogens, refractory macromolecular organic matter, etc. Decomposed.

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Abstract

The invention belongs to the technical field of sludge treatment, and discloses a sludge steam explosion decomposition method and a sludge steam explosion decomposition machine. The sludge steam explosion decomposition method and the sludge steam explosion decomposition machine are used for solving the problems that in the prior art, a sludge treatment process is complex, treatment is halfway, devices are complex, and the operation and maintenance cost is high. The sludge steam explosion decomposition method comprises the steps that first, sludge with the moisture content ranging from 40% to 99% is placed in a closed container, and water vapor is fed into the closed container; the sludge is subjected to vapor phase cooking for 5 min to 300 min under the conditions that the temperature ranges from 60 DEG C to 300 DEG C, and the pressure ranges from 0.1 Mpa to 2.5 Mpa, the closed container is opened and communicated with the atmoshphere, and sudden pressure drop is carried out. The steam explosion decomposition technology is adopted for the sludge steam explosion decomposition machine, worm eggs, pathogens, cancerogen, macromolecular organic pesticides hard to decompose and the like in the sludge are removed, and sludge harmless treatment is completed very ingeniously and efficiently. Because the process is short, treatment is thorough, and the content of micromolecule substances is high, development and utilization on finally-obtained clean sludge powder can be facilitated.

Description

technical field [0001] The invention relates to the technical field of sludge treatment, in particular to a sludge steam explosion decomposition method and a sludge steam explosion decomposition machine for implementing the method. Background technique [0002] With the development of the economy, the amount of urban sewage continues to increase. According to relevant forecasts, the current annual output of dry sludge in my country is nearly 3×10 6 t. Municipal sludge contains a large amount of N, P, K, Ca and organic matter, and N and P are mainly in organic state, which can be released slowly and have long-term effect. Sludge is a useful biological resource, and if it can be used rationally, it can turn waste into treasure. [0003] Sludge treatment is the harmless processing of sludge, including the removal of heavy metals, pathogens, insect eggs, carcinogens, and organic macromolecules in sludge. The existing relatively new sludge treatment methods mainly include slu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/10
Inventor 曹吉祥杨民玉李庆奇
Owner JINAN MIDUOTAN NEW ENERGY TECH