阅读说明：本技术 一种用于处理废固和废水的气化装置 (Gasification device for treating waste solids and wastewater ) 是由 樊强 陶继业 刘刚 李小宇 任永强 许世森 于 2019-10-28 设计创作，主要内容包括：本发明公开了一种用于处理废固和废水的气化装置,气化装置壳体内设置有分程隔板,分程隔板上开设有通孔,水冷壁底部的出口及下降管顶部的出口均与所述通孔相连通,下降管的下端插入于渣池内,组合式开工-废水烧嘴自气化装置壳体的顶部插入于气化装置壳体后插入于水冷壁内,各废固烧嘴穿过气化装置壳体的侧壁后插入于水冷壁内；水冷壁的顶部设置有循环冷却水入口,水冷壁的底部设置有循环冷却水出口,气化装置壳体的顶部设置有氮气入口；下降管的内壁上设置有若干激冷喷嘴,其中,各激冷喷嘴的入口与激冷水输入管道相连通,气化装置壳体的侧壁上设置有合成气出口,该装置能够有效的处理废固及废水,同时能够有效的降温除灰。(The invention discloses a gasification device for treating waste solids and waste water.A pass partition plate is arranged in a shell of the gasification device, a through hole is formed in the pass partition plate, an outlet at the bottom of a water-cooled wall and an outlet at the top of a down pipe are communicated with the through hole, the lower end of the down pipe is inserted into a slag pool, a combined start-up and waste water burner nozzle is inserted into the water-cooled wall after being inserted into the shell of the gasification device from the top of the shell of the gasification device, and each waste solids burner nozzle penetrates through the side wall of the shell of the gasification device and then is inserted into the water-cooled wall; the top of the water-cooled wall is provided with a circulating cooling water inlet, the bottom of the water-cooled wall is provided with a circulating cooling water outlet, and the top of the shell of the gasification device is provided with a nitrogen inlet; the inner wall of the down pipe is provided with a plurality of chilling nozzles, wherein the inlets of the chilling nozzles are communicated with a chilling water input pipeline, and the side wall of the shell of the gasification device is provided with a synthesis gas outlet.)

1. A gasification device for treating waste solids and waste water is characterized by comprising a gasification device shell (1), a combined start-up waste water burner (12), a chilled water input pipeline (10), a plurality of waste solids burners (13), a water-cooled wall (2) arranged in the gasification device shell (1), a down pipe (4) and a slag bath (5);

a pass partition plate (3) is arranged in a gasification device shell (1), wherein a through hole is formed in the pass partition plate (3), an outlet at the bottom of a water-cooled wall (2) and an outlet at the top of a down pipe (4) are communicated with the through hole, the lower end of the down pipe (4) is inserted into a slag pool (5), a combined start-up waste water burner (12) is inserted into the water-cooled wall (2) after being inserted into the gasification device shell (1) from the top of the gasification device shell (1), and each waste solid burner (13) penetrates through the side wall of the gasification device shell (1) and then is inserted into the water-cooled wall (2);

a circulating cooling water inlet (7) is formed in the top of the water-cooled wall (2), a circulating cooling water outlet (8) is formed in the bottom of the water-cooled wall (2), and a nitrogen inlet (14) is formed in the top of the gasification device shell (1);

the inner wall of the down pipe (4) is provided with a plurality of chilling nozzles (15), wherein the inlets of the chilling nozzles (15) are respectively communicated with corresponding chilling jackets (42), the side wall of the gasification device shell (1) is provided with a synthesis gas outlet (6), and the synthesis gas outlet (6) is over against the down pipe (4).

2. A gasifier for processing waste solids and wastewater according to claim 1, wherein the top of the gasifier shell (1) is provided with a top flange (16) for fixing the combined start-up and wastewater burner (12).

3. A gasification unit for processing waste solids and wastewater according to claim 1, characterized in that the side of the bottom of the gasification unit housing (1) is provided with a slag bath water replenishment port (11), and the bottom of the gasification unit housing (1) is provided with a slag water outlet (9).

4. A gasification unit for processing waste solids and waste water according to claim 1, wherein the bottom of the waterwall (2) is sealingly connected to the upper surface of the pass partition (3) and the upper part of the downcomer (4) is sealingly connected to the lower surface of the pass partition (3).

5. A gasification unit for processing waste solids and water according to claim 1, characterized in that the water cooled wall (2) is of a coil or tube and tube construction.

6. A gasification unit for the treatment of waste solids and water according to claim 1 wherein the inner wall of the waterwalls (2) is provided with a layer of refractory material.

7. A gasification unit for processing waste solids and wastewater according to claim 1, characterized in that the downcomer (4) comprises a downcomer cylinder (41), the downcomer cylinder (41) being divided into quench jackets (42) by jacket partitions (43), wherein quench nozzles (15) are arranged on the inner wall of the quench jackets (42), one quench jacket (42) corresponding to each quench water inlet conduit (10), and wherein the quench jackets (42) are in communication with the corresponding quench water inlet conduit (10).

8. A gasification unit for processing waste solids and water according to claim 7 wherein the number of quench nozzles (15) on each quench jacket (42) is 3 or more.

9. A gasification unit for processing waste solids and wastewater according to claim 1, wherein the number of the waste solids burners (13) is 2-8, and the waste solids burners (13) are arranged in sequence along the circumferential direction, and the waste solids burners (13) are horizontally inserted into the water wall (2).

10. The gasification apparatus for processing waste solids and wastewater as claimed in claim 1, wherein the feed of the waste solids burner (13) comprises waste solids and an oxidant, wherein the waste solids are coal slurry, coke, semicoke, petroleum coke, coal gangue, garbage or powder made of sludge; the oxidant is pure oxygen, oxygen-enriched oxygen or a mixture of pure oxygen/oxygen-enriched oxygen and water vapor/carbon dioxide;

the combined start-up and waste water burner (12) has the functions of ignition, start-up and waste water feeding, the waste water is organic waste water, inorganic waste water or domestic sewage, the fuel used during the ignition and start-up of the combined start-up and waste water burner (12) is liquefied petroleum gas, natural gas or diesel, and the combustion improver is instrument air or oxygen.

Technical Field

The invention belongs to the technical field of energy chemical industry, and relates to a gasification device for treating waste solids and wastewater.

Background

At present, Chinese economy develops rapidly, brings a large amount of environmental problems at the same time, and on the whole, the situation of environmental pollution in China is still severe, the problems of frequent haze weather, black and odorous urban river water, "refuse surrounding", soil pollution, hazardous waste disposal, rural environmental pollution and the like are prominent, and pollution control is far from the greatest.

The existing industrial wastewater has various types, complex components and difficult degradation, and industrial production materials, intermediate products and byproducts which are lost along with water and pollutants generated in the production process are difficult to recover. The industrial solid wastes such as coal slime, coke, semicoke, petroleum coke, coal gangue, garbage, sludge, fly ash and the like also have the problems of difficult treatment and great pollution. Especially, the waste solids generated in coal mines and coking plants can not be processed in time, which causes large-area accumulation and is easy to generate dust and pollution. Aiming at the problems of long flow, high energy consumption and large investment of the existing treatment process of the waste solid and the waste water. Some of the devices existing in the engineering are single in treatment of waste solids and waste water, either only the waste solids or the waste water are treated, and problems occur more or less in the operation process.

Therefore, in order to solve the problems, it is a significant task to develop a gasification device which can treat both waste solids and wastewater and can effectively remove ash and cool.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a gasification device for treating waste solid and wastewater, which can effectively treat the waste solid and wastewater, can effectively reduce the temperature and remove ash, and has low energy consumption and cost.

In order to achieve the aim, the gasification device for treating the waste solids and the waste water comprises a gasification device shell, a combined start-up-waste water burner, a chilled water input pipeline, a waste solids burner, a water-cooled wall, a down pipe and a slag pool, wherein the water-cooled wall, the down pipe and the slag pool are arranged in the gasification device shell;

a pass partition plate is arranged in the gasification device shell, wherein a through hole is formed in the pass partition plate, an outlet at the bottom of the water-cooled wall and an outlet at the top of a down pipe are communicated with the through hole, the lower end of the down pipe is inserted into the slag bath, a combined start-up waste water burner is inserted into the water-cooled wall after being inserted into the gasification device shell from the top of the gasification device shell, and each waste solid burner penetrates through the side wall of the gasification device shell and is inserted into the water-cooled wall;

the top of the water-cooled wall is provided with a circulating cooling water inlet, the bottom of the water-cooled wall is provided with a circulating cooling water outlet, and the top of the shell of the gasification device is provided with a nitrogen inlet;

the inner wall of the down pipe is provided with a plurality of chilling nozzles, wherein the inlets of the chilling nozzles are respectively communicated with the corresponding chilling jackets, the side wall of the shell of the gasification device is provided with a synthesis gas outlet, and the synthesis gas outlet is over against the down pipe.

And a top flange for fixing the combined start-up and waste water burner is arranged at the top of the gasification device shell.

The side of the bottom of the gasification device shell is provided with a slag pool water replenishing port, and the bottom of the gasification device shell is provided with a slag water outlet.

The bottom of the water-cooled wall is hermetically connected with the upper surface of the pass partition plate, and the upper part of the downcomer is hermetically connected with the lower surface of the pass partition plate.

The water-cooled wall is of a coil pipe structure or a tube array structure.

And a refractory material layer is arranged on the inner wall of the water-cooled wall.

The descending pipe comprises a descending pipe barrel body which is divided into a plurality of chilling jackets through a plurality of jacket clapboards, wherein the chilling nozzles are arranged on the inner walls of the chilling jackets, one chilling jacket corresponds to one chilling water input pipeline, and the chilling jackets are communicated with the corresponding chilling water input pipelines.

The number of the chilling nozzles on each chilling jacket is more than or equal to 3.

The number of the waste solid burners is 2-8, the waste solid burners are sequentially arranged along the circumferential direction, and the waste solid burners are horizontally inserted into the water-cooled wall.

Feeding materials of the waste solid burner comprise waste solids and an oxidant, wherein the waste solids are powder prepared from coal slime, coke, semicoke, petroleum coke, coal gangue, garbage or sludge; the oxidant is pure oxygen, oxygen-enriched oxygen or a mixture of pure oxygen/oxygen-enriched oxygen and water vapor/carbon dioxide;

the combined start-up and waste water burner has the functions of ignition, start-up and waste water feeding, the waste water is organic waste water, inorganic waste water or domestic sewage, the fuel used in the ignition and start-up of the combined start-up and waste water burner is liquefied petroleum gas, natural gas or diesel oil, and the combustion improver is instrument air or oxygen.

The invention has the following beneficial effects:

when the gasification device for treating the waste solid and the waste water is in specific operation, the inside of the water-cooled wall forms a gasification reaction chamber, the waste water sprayed by the combined start-up and waste water burner and the waste solid and the gasification agent sprayed by the waste solid burner are gasified in the gasification reaction chamber to form high-temperature synthesis gas, and the waste water sprayed by the combined start-up and waste water burner is fully mixed with the high-temperature synthesis gas, so that toxic and harmful carbon-containing substances which are difficult to treat in the waste water are converted into CO and CO at high temperature₂And H₂Meanwhile, the cooling of the synthesis gas is realized, the cooled synthesis gas enters the downcomer downwards to be further cooled and then is introduced into the slag pool, ash and slag are settled in the difference pool, and the clean synthesis gas is discharged through the synthesis gas outlet, so that the waste solids and the waste water are effectively treated, meanwhile, the purposes of effectively cooling and removing ash are realized, and the energy consumption and the cost are lower.

Furthermore, the invention adopts the down pipe with the chilling jacket and the chilling nozzle to cool and remove ash from the high-temperature synthesis gas, greatly improves the ash removal and heat exchange effects, and reduces the energy consumption and investment of a subsequent dust removal system.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic layout of the downcomer 4 of the present invention.

Wherein, 1 is a gasification device shell, 2 is a water wall, 3 is a split-range partition, 4 is a downcomer, 5 is a slag pool, 6 is a synthesis gas outlet, 7 is a circulating cooling water inlet, 8 is a circulating cooling water outlet, 9 is a slag water outlet, 10 is a chilling water input pipeline, 11 is a slag pool water replenishing port, 12 is a combined start-up and waste water burner, 13 is a waste solid burner, 14 is a nitrogen inlet, 15 is a chilling nozzle, 16 is a top flange, 41 is a downcomer cylinder, 42 is a chilling jacket, and 43 is a jacket partition.

Detailed Description

The invention is described in further detail below with reference to the accompanying drawings:

referring to fig. 1, the gasification device for treating waste solids and wastewater according to the present invention comprises a gasification device housing 1, a combined start-up-wastewater burner 12, a chilled water input pipeline 10, a plurality of waste solids burners 13, and a water wall 2, a downcomer 4 and a slag bath 5 arranged in the gasification device housing 1; a pass partition plate 3 is arranged in the gasification device shell 1, wherein a through hole is formed in the pass partition plate 3, an outlet at the bottom of the water-cooled wall 2 and an outlet at the top of a down pipe 4 are communicated with the through hole, the lower end of the down pipe 4 is inserted into a slag bath 5, a combined start-up and waste water burner 12 is inserted into the water-cooled wall 2 after being inserted into the gasification device shell 1 from the top of the gasification device shell 1, and each waste solid burner 13 penetrates through the side wall of the gasification device shell 1 and then is inserted into the water-cooled wall 2; a circulating cooling water inlet 7 is formed in the top of the water-cooled wall 2, a circulating cooling water outlet 8 is formed in the bottom of the water-cooled wall 2, and a nitrogen inlet 14 is formed in the top of the gasification device shell 1; the inner wall of the down pipe 4 is provided with a plurality of chilling nozzles 15, wherein the inlet of each chilling nozzle 15 is communicated with a chilling water input pipeline 10, the side wall of the gasification device shell 1 is provided with a synthetic gas outlet 6, the synthetic gas outlet 6 is over against the down pipe 4, and the down pipe 4 is in a cylindrical barrel hollow structure.

The top of the gasification device shell 1 is provided with a top flange 16 for fixing the combined start-up and waste water burner 12; a slag pool water replenishing port 11 is arranged on the side surface of the bottom of the gasification device shell 1, and a slag water outlet 9 is arranged at the bottom of the gasification device shell 1.

The bottom of the water wall 2 is hermetically connected with the upper surface of the pass partition plate 3, and the upper part of the downcomer 4 is hermetically connected with the lower surface of the pass partition plate 3; the partition board 3 is fixed with the inner wall of the gasification device shell 1 by welding.

The water-cooled wall 2 is of a coil pipe structure or a tube array structure; the inner wall of the water-cooled wall 2 is provided with a refractory material layer.

Referring to fig. 2, the downcomer 4 includes a downcomer cylinder 41, and the downcomer cylinder 41 is divided into a plurality of chilling jackets 42 by a plurality of jacket partitions 43, wherein the chilling nozzles 15 are disposed on the inner wall of the chilling jackets 42, one chilling jacket 42 corresponds to one chilling water input pipe 10, and the chilling jackets 42 communicate with the corresponding chilling water input pipe 10.

The number of the chilling nozzles 15 on each chilling jacket 42 is more than or equal to 3; the number of the waste solid burners 13 is 2-8, the waste solid burners 13 are sequentially arranged along the circumferential direction, and the waste solid burners 13 are horizontally inserted into the water-cooled wall 2.

A gasification reaction chamber I is formed inside the water-cooled wall 2; the operating pressure of the invention is 0.5-5 MPa, the reaction temperature is 1200-1800 ℃, a liquid state deslagging mode is adopted, and the shell 1 of the gasification device is used as a pressure vessel to bear the gasification pressure.

The combined start-up and waste water burner 12 integrates the functions of ignition, start-up and waste water feeding. The feed wastewater comprises organic wastewater, inorganic wastewater, domestic sewage and the like, the fuel used by the combined start-up and wastewater burner 12 during ignition start-up can be liquefied petroleum gas, natural gas and diesel oil, and the combustion improver can be instrument air or oxygen.

The feeding of the waste solid burner 13 comprises waste solid and an oxidant, wherein the waste solid can be powder prepared from coal slime, coke, semicoke, petroleum coke, coal gangue, garbage, sludge and the like, and the oxidant can be pure oxygen, oxygen-enriched oxygen or a mixture of the pure oxygen/the oxygen-enriched oxygen and water vapor/carbon dioxide.

The working principle of the invention is as follows:

waste solids and waste water are subjected to CO-gasification reaction with a gasification agent in a gasification reaction chamber I to generate high-temperature synthesis gas, each waste solid burner 13 is inserted into a water-cooled wall 2 in the horizontal direction to ensure that the waste solids difficult to gasify have longer reaction residence time and disturbance strength in a reaction zone, so that powder, waste and solid particles are fully reacted, the reaction temperature is as high as 1600 ℃, at the moment, the waste water sprayed by the combined start-up and waste water burner 12 enters the gasification reaction chamber I to be fully mixed with the high-temperature synthesis gas, and toxic and harmful carbon-containing substances (such as tar, phenol, naphthalene, anthracene and quinone) difficult to treat in the waste water are converted into CO and CO at high temperature₂And H₂And simultaneously, the synthesis gas is cooled, the cooled synthesis gas enters the descending pipe 4 downwards and is fully wetted and subjected to heat exchange with the atomized chilled temperature-reducing water sprayed by the chilling nozzle 15, the synthesis gas is subjected to ash removal and is cooled to a temperature below 300 ℃ and then enters the slag pool 5, ash and slag are discharged through the slag water outlet 9 along with slag water after being settled in the slag pool 5, and the clean synthesis gas moves upwards along a gap between the descending pipe 4 and the gasification device shell 1 after being reversed in the slag pool 5 and is discharged through the synthesis gas outlet 6.