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Sludge pyrolysis and carbon value reutilization co-treatment apparatus and method

A technology for processing equipment and sludge, which is applied in the field of sludge pyrolysis and carbon value resource co-processing equipment, can solve the problems of secondary environmental pollution, generation of waste water, waste gas, and complex sludge composition.

Inactive Publication Date: 2017-01-11
TIANJIN CHENGJIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology allows for efficient processing of slurry by combining its characteristics into one system that can efficiently treat or reuse this material while also reducing environmental concerns associated therewith such as excessive temperature control requirements and generating harmful gases like nitrous oxide (NOx).

Problems solved by technology

This patented technical solution involves efficiently processing slurry containing various materials such as metal sulfides (MS), bacteria, yeast cells, amoeba shells, plankton protozoans, fecal coliforms, phosphorus acid residues, iron oxide particles, chlorophyll molecules, nitrous oxygen compounds, hydrogen peroxy acids, carboxylates, polysaccharins, proteases, nucleic acids and small soluble elements for use in fuel production without generating harmful substances like NOx emissions. Additionally, this technology allows for effective separation of different types of contaminating agents found within the sliming fraction due to their unique chemical structures.

Method used

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  • Sludge pyrolysis and carbon value reutilization co-treatment apparatus and method
  • Sludge pyrolysis and carbon value reutilization co-treatment apparatus and method
  • Sludge pyrolysis and carbon value reutilization co-treatment apparatus and method

Examples

Experimental program
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Effect test

Embodiment 1

[0060] Add straw and ZnCl to the sludge 2 , the mass of straw is 15% of the mass of dry sludge, ZnCl 2 The mass is 10% of the dry sludge mass, and the three enter the mixing chamber for stirring and homogenization. It is sent to the first-stage air dryer by the screw conveyor to reduce the moisture content of the material to 50%; it is sent to the granulator by the screw conveyor, and coal tar is added as a binder. The mass ratio of the material to coal tar is 1:0.3 , prepared into a cylinder with a diameter of 8mm and a length of 15mm; it is sent to the second-stage air dryer by a belt conveyor to reduce the moisture content of the material to 20%, and at the same time raise the temperature of the molding material to 320°C to decompose the produced CO 2 Together with the evaporated moisture, it is carried away by the hot flue gas. The dried molding material is sent into the pyrolysis furnace through the feed pipe, the pyrolysis temperature is 650°C, and the residence time i...

Embodiment 2

[0063] Add straw and ZnCl to the sludge 2 , the mass of straw is 10% of the mass of dry sludge, ZnCl 2 The quality is 8% of the dry sludge quality, and the three enter the mixing chamber for stirring and homogenization. It is sent to the first-stage air dryer by the screw conveyor to reduce the moisture content of the material to 20%; it is sent to the granulator by the screw conveyor, and coal tar is added as a binder, and the mass ratio of the material to coal tar is 1:0.1 , prepared into a cylinder with a diameter of 8mm and a length of 15mm; it is sent to the second-stage air dryer by a belt conveyor to reduce the moisture content of the material to 5%, and at the same time raise the temperature of the molding material to 320°C to decompose the produced CO 2 Together with the evaporated moisture, it is carried away by the hot flue gas. The dried molding material is sent into the pyrolysis furnace through the feed pipe, the pyrolysis temperature is 750°C, and the residenc...

Embodiment 3

[0066] Add straw and ZnCl to the sludge 2 , the mass of straw is 20% of the dry sludge mass, ZnCl 2 The quality is 12% of the dry sludge quality, and the three enter the mixing chamber for stirring and homogenization. It is sent to the first-stage air dryer by the screw conveyor to reduce the moisture content of the material to 40%; it is sent to the granulator by the screw conveyor, and coal tar is added as a binder. The mass ratio of the material to coal tar is 1:0.5 , prepared into a cylinder with a diameter of 8mm and a length of 15mm; it is sent to the second-stage air dryer by a belt conveyor to reduce the moisture content of the material to 15%, and at the same time raise the temperature of the molding material to 320°C to decompose the produced CO 2 Together with the evaporated moisture, it is carried away by the hot flue gas. The dried molding material is sent into the pyrolysis furnace through the feed pipe, the pyrolysis temperature is 850°C, and the residence tim...

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Abstract

The invention provides a sludge pyrolysis and carbon value reutilization co-treatment apparatus and method. The apparatus comprises a sludge storage bin, a straw storage bin, a ZnCl2 storage bin, a blending bin, a first spiral conveyer, a primary air dryer, a second spiral conveyer, a granulator, a belt conveyor, a secondary air dryer, a feed tube, a pyrolysis furnace, a condenser, an activation furnace, a sludge activated charcoal storage bin, a saturated washing tower, a first distribution valve, a gas-fired hot water boiler, a activated charcoal adsorption tower, a draught fan, a second distribution valve and a third distribution valve. By fully utilizing moisture and energy in the sludge and the reutilization property of the sludge, one part of organic matters in the sludge are converted into combustible gas and tar, and a large amount of moisture in the sludge is evaporated to activate a solid coke product, thus preparing activated charcoal. The combustion of the combustible gas and tar provides energy required for pyrolysis and activation processes; the redundant combustible gas is transferred into the gas-fired boiler for hot water production; and the prepared activated charcoal can be used for purifying waste gas and waste water produced in the treatment process, thus avoiding environmental pollution.

Description

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Claims

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Application Information

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Owner TIANJIN CHENGJIAN UNIV
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