CN-118184090-B - Fatlute pyrolysis gasification melting device

CN118184090BCN 118184090 BCN118184090 BCN 118184090BCN-118184090-B

Abstract

The invention discloses an oil sludge pyrolysis gasification melting device which comprises a tower body, wherein a distribution section, a pyrolysis gasification section and a melting combustion section are arranged in the direction from top to bottom in the tower body, the distribution section is provided with a feed inlet for oil sludge to enter, the pyrolysis gasification section is used for heating the oil sludge entering from the distribution section and carrying out pyrolysis gasification on the oil sludge, the pyrolysis gasification section is provided with an exhaust port for exhausting pyrolysis oil gas generated by pyrolysis gasification of the oil sludge, the melting combustion section is used for carrying out melting combustion on the oil sludge slag generated by the pyrolysis gasification section, and the melting combustion section is provided with a slag discharge port and a smoke discharge port. According to the pyrolysis gasification melting device for the oil sludge, disclosed by the embodiment of the invention, the pyrolysis gasification of the oil sludge and the melting combustion of the oil sludge slag are coupled, the oil sludge slag generated in the pyrolysis gasification stage of the oil sludge is not required to be used as hazardous waste to be further treated independently, the short plates of the discontinuity of the oil sludge treatment process are overcome, the continuous operation of the oil sludge treatment process is realized, and the treatment efficiency of the oil sludge is greatly improved.

Inventors

LI YUZHE
RU YU
XIU JIANHUA
GENG XINZE
SUN ZHONGHAO
LI DONGMING
LIU ZIMENG
OUYANG YAWEN

Assignees

华能烟台八角热电有限公司
北京华能长江环保科技研究院有限公司

Dates

Publication Date: 20260508
Application Date: 20240407

Claims (7)

1. An oil sludge pyrolysis gasification melting device, which is characterized by comprising: The tower body is provided with a distributing section, a pyrolysis gasification section and a melting combustion section along the direction from top to bottom, the distributing section is provided with a feeding port for the entry of oil sludge, the pyrolysis gasification section is used for heating the oil sludge entered by the distributing section and carrying out pyrolysis gasification on the oil sludge, the pyrolysis gasification section is provided with an exhaust port for exhausting pyrolysis oil gas generated by pyrolysis gasification of the oil sludge, the melting combustion section is used for carrying out melting combustion on the oil sludge slag generated by the pyrolysis gasification section, the melting combustion section is provided with a slag discharge port and a smoke exhaust port, the slag discharge port is used for discharging slag generated by melting combustion of the oil sludge slag in the melting combustion section, and the smoke exhaust port is used for discharging smoke generated by melting combustion of the oil sludge slag in the melting combustion section; the central tube is used for introducing air and superheated steam into the pyrolysis gasification section so as to heat the oil sludge and make the oil sludge pyrolyzed and gasified in the pyrolysis gasification section; The pyrolysis gasification device comprises a plurality of distributing pipes, wherein the distributing pipes are arranged in the pyrolysis gasification section, the distributing pipes are arranged on the central pipe at intervals along the circumferential direction of the central pipe and perpendicular to the central pipe, the distributing pipes are communicated with the central pipe, and the pipe walls of the distributing pipes are provided with a plurality of first air outlets which are arranged at intervals; the air distribution pipe comprises a plurality of air distribution pipes, wherein at least one air distribution pipe is arranged on the air distribution pipe, the central axis of the air distribution pipe is parallel to the central axis of the tower body and is communicated with the air distribution pipe, and a plurality of second air outlets which are arranged at intervals are arranged on the pipe wall of the air distribution pipe.
2. The sludge pyrolysis gasification melting device according to claim 1, wherein the feeding port is arranged at the central position of the top of the tower body, a plurality of distributing pipes extending along the vertical direction are arranged in the distributing section, and the distributing pipes are distributed in a central symmetry manner with the central axis of the tower body.
3. The sludge pyrolysis gasification melting device according to claim 2, wherein a plurality of combustion nozzles are arranged on the melting combustion section, the combustion nozzles are arranged at intervals along the circumferential direction of the tower body, the combustion nozzles are provided with fuel inlets and injection ports, the fuel inlets are communicated with the pyrolysis oil gas outlets, and the injection ports are arranged in the melting combustion section and used for injecting combustion flames towards sludge.
4. The sludge pyrolysis gasification melting apparatus according to claim 3, further comprising: a reheat pipe having an deoxygenated water inlet and a saturated steam outlet, at least a portion of the reheat pipe being disposed within the pyrolysis and gasification stage, the reheat pipe being configured to heat deoxygenated water and produce saturated steam, and The superheating pipe is arranged in the melting combustion section, the superheating pipe is provided with a saturated steam inlet and a superheated steam outlet, the saturated steam inlet is communicated with the saturated steam outlet of the reheating pipe, the superheated steam outlet is communicated with the central pipe, and the superheating pipe is used for heating the saturated steam discharged by the reheating pipe into superheated steam and then conveying the superheated steam into the central pipe.
5. The sludge pyrolysis gasification melting device according to claim 2, further comprising an air heat exchanger comprising a cold air inlet, a hot air outlet, a heat exchange medium inlet and a heat exchange medium outlet, wherein the heat exchange medium inlet is in communication with the smoke outlet, the hot air outlet is in communication with the central tube, and the air heat exchanger is used for preheating air and then delivering the preheated air to the central tube.
6. The sludge pyrolysis gasification melting device according to any one of claims 1 to 5, wherein the tower body further comprises a slag discharging section provided between the pyrolysis gasification section and the melting combustion section, the diameter of the slag discharging section is smaller than that of the melting combustion section, a rotary table is provided between the slag discharging section and the melting combustion section, the central axis of the rotary table coincides with the central axis of the tower body, and the diameter of the rotary table is larger than that of the slag discharging section and smaller than that of the melting combustion section.
7. The sludge pyrolysis gasification melting device according to claim 6, wherein a surrounding plate surrounding the rotating table is arranged on the outer circumferential surface of the rotating table, a containing cavity with an opening facing the slag discharging section is defined between the surrounding plate and the rotating table, a sludge channel is formed between the surrounding plate and the melting combustion section, the sludge channel is communicated with the containing cavity and the melting combustion section, a scraper is arranged in the containing cavity, one end of the scraper is connected with the bottom end of the surrounding plate, and the scraper is obliquely arranged relative to the rotating table so as to scrape sludge in the containing cavity into the sludge channel.

Description

Fatlute pyrolysis gasification melting device Technical Field The invention relates to the technical field of oil sludge treatment equipment, in particular to an oil sludge pyrolysis gasification melting device. Background The oil sludge is an oily solid waste generated in the processes of drilling exploitation, transportation, refining and oil sewage treatment of an oil field, and contains a large amount of harmful substances, so that the oil sludge needs to be effectively and timely treated, and serious harm to the ecological environment is avoided. In the related art, the oil sludge is generally treated by adopting a pyrolysis method, and the oil sludge is pyrolyzed into pyrolysis slag, pyrolysis liquid and pyrolysis oil gas, so that the recycling of the oil sludge is realized. However, pyrolysis residues generated by adopting a pyrolysis process for the oil sludge are used as hazardous wastes and need to be further treated independently, so that the treatment process of the oil sludge is discontinuous, and the treatment efficiency is low. Disclosure of Invention The present invention aims to solve at least one of the technical problems in the related art to some extent. For this purpose, the embodiment of the invention provides an oil sludge pyrolysis gasification melting device. The device comprises a tower body, wherein a distributing section, a pyrolysis gasification section and a melting combustion section are arranged in the tower body along the direction from top to bottom, the distributing section is provided with a feeding port for the entry of the oil sludge, the pyrolysis gasification section is used for heating the oil sludge entered by the distributing section and carrying out pyrolysis gasification on the oil sludge, the pyrolysis gasification section is provided with an exhaust port for exhausting pyrolysis oil gas generated by pyrolysis gasification of the oil sludge, the melting combustion section is used for carrying out melting combustion on the oil sludge slag generated by the pyrolysis gasification section, the melting combustion section is provided with a slag discharge port and a smoke exhaust port, the slag discharge port is used for discharging slag generated by melting combustion of the oil sludge slag in the melting combustion section, and the smoke exhaust port is used for discharging smoke generated by melting combustion of the oil sludge slag in the melting combustion section. In some embodiments, the feeding port is disposed at a central position of the top of the tower body, and a plurality of distributing pipes extending along a vertical direction are disposed in the distributing section and are distributed in a central symmetry manner with respect to a central axis of the tower body. In some embodiments, the sludge pyrolysis gasification melting device according to the embodiments of the present invention further includes a central tube, two ends of the central tube are open, one end of the central tube extends into the pyrolysis gasification section through the feed inlet, and the central tube is used for introducing air and superheated steam into the pyrolysis gasification section to heat the sludge and make the sludge pyrolyzed and gasified in the pyrolysis gasification section. In some embodiments, the sludge pyrolysis gasification melting device according to the embodiments of the present invention further includes a plurality of distribution pipes, the distribution pipes are disposed in the pyrolysis gasification section, the plurality of distribution pipes are disposed on the central pipe at intervals along a circumferential direction of the central pipe and perpendicular to the central pipe, the distribution pipes are communicated with the central pipe, and a plurality of first air outlets are disposed on a pipe wall of the distribution pipes at intervals. In some embodiments, the sludge pyrolysis gasification melting device according to the embodiments of the present invention further includes a plurality of air distribution pipes, at least one air distribution pipe is provided with at least one air distribution pipe, a central axis of the air distribution pipe is parallel to a central axis of the tower body and is communicated with the air distribution pipe, and a pipe wall of the air distribution pipe is provided with a plurality of second air outlets arranged at intervals. In some embodiments, the melting combustion section is provided with a plurality of combustion nozzles, the combustion nozzles are arranged at intervals along the circumferential direction of the tower body, the combustion nozzles are provided with fuel inlets and injection ports, the fuel inlets are communicated with the pyrolysis oil gas outlets, and the injection ports are arranged in the melting combustion section and used for injecting combustion flames towards sludge. In some embodiments, the sludge pyrolysis gasification melting device of the embodiment of the invention further compr