阅读说明：本技术 一种高温熔融液体废料在二燃室焚烧的处理方法 (Method for treating high-temperature molten liquid waste by burning in secondary combustion chamber ) 是由 孙承良 李平 钱进静 于 2021-07-16 设计创作，主要内容包括：本发明公开了一种高温熔融液体废料在二燃室焚烧的处理方法,包括以下操作步骤：将高温熔融废料导入集存箱内部,进行存储,利用可用蒸汽加热的槽车或储罐将高温熔融废料保持在能使物料熔融成液态的温度,利用齿轮泵将高温熔融废料液态料输送到焚烧线二燃室,将高温熔融废料液态料导入焚烧线二燃室后对其进行高温焚烧处理,高温熔融液体废料在二燃室焚烧处理完成。本发明所述的一种高温熔融液体废料在二燃室焚烧的处理方法,将能够在高温下熔融的高热值物料加热到能够熔融的温度,然后通过泵送当作液体废料在二燃室焚烧,特点是降低焚烧回转窑的工作温度,保护窑砖；节约助燃燃料,降低焚烧的处理成本,带来更好的使用前景。(The invention discloses a method for treating high-temperature molten liquid waste by incineration in a secondary combustion chamber, which comprises the following operation steps: the high-temperature melting waste is guided into the collecting and storing box to be stored, the high-temperature melting waste is kept at the temperature which enables the materials to be melted into liquid by using a tank car or a storage tank which can be heated by steam, the liquid material of the high-temperature melting waste is conveyed to a secondary combustion chamber of an incineration line by using a gear pump, the liquid material of the high-temperature melting waste is guided into the secondary combustion chamber of the incineration line to be subjected to high-temperature incineration treatment, and the incineration treatment of the liquid waste of the high-temperature melting waste is completed in the secondary combustion chamber. The invention relates to a method for treating high-temperature molten liquid waste by burning in a secondary combustion chamber, which is characterized in that a high-heat-value material which can be melted at high temperature is heated to a temperature which can be melted, and then is taken as the liquid waste by pumping to be burned in the secondary combustion chamber, and the method is characterized in that the working temperature of a burning rotary kiln is reduced, and kiln bricks are protected; saves combustion-supporting fuel, reduces the treatment cost of incineration and brings better use prospect.)

1. A method for treating high-temperature molten liquid waste by incineration in a secondary combustion chamber is characterized by comprising the following steps: the method comprises the following operation steps:

s1: collecting materials: preparing a material collecting and storing box, and introducing high-temperature melting waste into the collecting and storing box for storage, wherein the high-temperature melting waste is solid at normal temperature and has high heat value;

s2: pretreatment of waste materials: preparing a tank car or a storage tank heated by steam, and keeping high-temperature molten waste at a temperature capable of melting the material into a liquid state by using the tank car or the storage tank heated by the steam;

s3: conveying a liquid material: after the high-temperature melting waste is melted into a liquid state, preparing a gear pump, conveying the high-temperature melting waste liquid material to a second combustion chamber of the incineration line by using the gear pump, wherein the gear pump is provided with a circulation pump to keep the pressure of the outlet of the pump stable;

s4: conveying treatment: all conveying pipelines of the gear pump are provided with jacketed pipes, and when the high-temperature molten waste liquid material is conveyed, the material can be heated to the temperature for keeping the material molten into the liquid state by using steam;

s5: temperature constant temperature treatment: a valve group frame is arranged in a conveying pipe of the gear pump, a hand valve, a control valve, a stop valve, a flow meter and a pressure gauge are arranged on the valve group frame, electric tracing is needed, and the temperature of the electric tracing also needs to be capable of keeping the temperature of the material which is melted into liquid state;

s6: material treatment: atomizing and blowing the high-temperature molten waste liquid material;

s7: material incineration treatment: and (3) introducing the high-temperature molten waste liquid material into a secondary combustion chamber of the incineration line, and then carrying out high-temperature incineration treatment on the high-temperature molten waste liquid material, wherein the incineration treatment of the high-temperature molten waste liquid material in the secondary combustion chamber is completed.

2. The method for treating high-temperature molten liquid waste by incineration in a secondary combustion chamber as set forth in claim 1, wherein: in the step S2, the tank car or the storage tank is heated by steam, and the temperature is kept constant.

3. The method for treating high-temperature molten liquid waste by incineration in a secondary combustion chamber as set forth in claim 1, wherein: the gear pump in the S3 step may maintain the temperature at which the high-temperature molten scrap is melted into a liquid state by means of steam or electric heating.

4. The method for treating high-temperature molten liquid waste by incineration in a secondary combustion chamber as set forth in claim 1, wherein: the atomization medium in the atomization operation in the step S6 is steam, and the purge medium is also steam.

5. The method for treating high-temperature molten liquid waste by incineration in a secondary combustion chamber as set forth in claim 1, wherein: the incineration in the S7 step uses a spray gun adapted to a high-viscosity liquid.

6. The method for treating high-temperature molten liquid waste by incineration in a secondary combustion chamber as set forth in claim 1, wherein: in the step S2, the heating time of the tank car or the storage tank is 25-35min, and the heating melting point is 100-150 ℃.

7. The method for treating high-temperature molten liquid waste by incineration in a secondary combustion chamber as set forth in claim 1, wherein: the heating temperature of the electric tracing in the step S5 is maintained at 120-140 ℃.

8. The method for treating high-temperature molten liquid waste by incineration in a secondary combustion chamber as set forth in claim 1, wherein: and in the step S7, the incineration time of the high-temperature molten liquid waste in the second combustion chamber is 35-45 min.

Technical Field

The invention relates to the field of hazardous waste treatment, in particular to a treatment method for incinerating high-temperature molten liquid waste in a secondary combustion chamber.

Background

The treatment of high-temperature molten liquid waste by incineration in a secondary combustion chamber is a method for treating hazardous waste, and the high-temperature molten liquid is solid at normal temperature and has high calorific value. The existing treatment process is to burn the materials as solid waste in a rotary kiln, and with the continuous development of science and technology, the manufacturing process requirements of people on the treatment method of burning the high-temperature molten liquid waste in a secondary combustion chamber are higher and higher.

In the prior art, a patent with an authorization publication number of CN201910734350.3 discloses a fuel type colored glaze attitude treatment device and a treatment method thereof for hazardous waste, the process flow is simplified, the equipment matching is simple, the occupied land is small, and the investment is saved; after heat exchange, the high-temperature flue gas can preheat the dangerous solid waste powder, and the flue gas after heat exchange is treated by flue gas to realize standard emission, so that energy can be recycled; the used cooling water is recycled, the generated steam is treated by the water cooler to realize no steam discharge, the existing treatment method for burning the high-temperature melting liquid waste in the secondary combustion chamber has certain defects in use, the treatment process can cause the overhigh temperature of the rotary kiln or needs a large amount of low-heat-value solid waste to be allocated, the use of people is not facilitated, and certain adverse effect is brought to the use process of people.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a method for treating high-temperature molten liquid waste by burning in a secondary combustion chamber, which is characterized in that a high-heat-value material which can be molten at high temperature is heated to a temperature which can be molten, and then the high-heat-value material is taken as liquid waste by pumping to be burned in the secondary combustion chamber, and the working temperature of a burning rotary kiln is reduced, and kiln bricks are protected; saves combustion-supporting fuel, reduces the treatment cost of incineration, and can effectively solve the problems in the background technology.

(II) technical scheme

In order to achieve the purpose, the invention adopts the technical scheme that: a method for treating high-temperature molten liquid waste by incineration in a secondary combustion chamber comprises the following operation steps:

s1: collecting materials: preparing a material collecting and storing box, and introducing high-temperature melting waste into the collecting and storing box for storage, wherein the high-temperature melting waste is solid at normal temperature and has high heat value;

s2: pretreatment of waste materials: preparing a tank car or a storage tank heated by steam, and keeping high-temperature molten waste at a temperature capable of melting the material into a liquid state by using the tank car or the storage tank heated by the steam;

s3: conveying a liquid material: after the high-temperature melting waste is melted into a liquid state, preparing a gear pump, conveying the high-temperature melting waste liquid material to a second combustion chamber of the incineration line by using the gear pump, wherein the gear pump is provided with a circulation pump to keep the pressure of the outlet of the pump stable;

s4: conveying treatment: all conveying pipelines of the gear pump are provided with jacketed pipes, and when the high-temperature molten waste liquid material is conveyed, the material can be heated to the temperature for keeping the material molten into the liquid state by using steam;

s5: temperature constant temperature treatment: a valve group frame is arranged in a conveying pipe of the gear pump, a hand valve, a control valve, a stop valve, a flow meter and a pressure gauge are arranged on the valve group frame, electric tracing is needed, and the temperature of the electric tracing also needs to be capable of keeping the temperature of the material which is melted into liquid state;

s6: material treatment: atomizing and blowing the high-temperature molten waste liquid material;

s7: material incineration treatment: and (3) introducing the high-temperature molten waste liquid material into a secondary combustion chamber of the incineration line, and then carrying out high-temperature incineration treatment on the high-temperature molten waste liquid material, wherein the incineration treatment of the high-temperature molten waste liquid material in the secondary combustion chamber is completed.

As a preferable technical solution, in the step S2, the tank car or the storage tank is heated by steam to keep the temperature constant.

As a preferable technical solution, the gear pump in the S3 step can maintain the temperature of the high-temperature molten waste melted into liquid state by means of steam or electric heating.

In a preferred embodiment, the atomizing medium in the atomizing operation in the step S6 is steam, and the purging medium is also steam.

As a preferable technical solution, the incineration in the step S7 uses a spray gun adapted to a high viscosity liquid.

As a preferable technical scheme, the heating time of the tank car or the storage tank in the step S2 is 25-35min, and the heating melting point is 100-150 ℃.

As a preferable technical proposal, the heating temperature of the electric tracing in the step S5 is kept at 120-140 ℃.

As a preferable technical scheme, the incineration time of the high-temperature molten liquid waste in the step S7 in a secondary combustion chamber is 35-45 min.

(III) advantageous effects

Compared with the prior art, the invention provides a treatment method for incinerating high-temperature molten liquid waste in a secondary combustion chamber, which has the following beneficial effects: the method for treating the high-temperature molten liquid waste by burning in the secondary combustion chamber comprises the steps of heating a high-heat-value material which can be molten at high temperature to a temperature which can be molten, and then burning the material serving as the liquid waste in the secondary combustion chamber by pumping, and is characterized in that the working temperature of a burning rotary kiln is reduced, and kiln bricks are protected; saving combustion-supporting fuel, reducing the treatment cost of incineration, preparing a material collecting and storing box, guiding high-temperature melting waste into the collecting and storing box for storage, wherein the high-temperature melting waste is solid at normal temperature and has high heat value, preparing a tank car or a storage tank heated by steam, keeping the high-temperature melting waste at the temperature capable of melting the material into liquid by using the tank car or the storage tank heated by steam, preparing a gear pump after the high-temperature melting waste is melted into liquid, conveying the liquid material of the high-temperature melting waste to an incineration line secondary combustion chamber by using the gear pump, wherein the gear pump needs to circularly keep the pressure of an outlet of the pump stable, arranging clamp sleeves on all conveying pipelines of the gear pump, heating the liquid material of the high-temperature melting waste to the temperature capable of melting the material into liquid by using the steam when the liquid material of the high-temperature melting waste is conveyed, arranging a valve assembly frame in a conveying pipe of the gear pump, and arranging a hand valve on the frame valve assembly, the control valve, the stop valve, the flowmeter and the pressure gauge all need electric tracing, the temperature of the electric tracing also needs to be capable of keeping the temperature of the material fused into liquid, the atomization operation and the blowing operation are carried out on the high-temperature fused waste liquid material, the high-temperature fused waste liquid material is introduced into a secondary combustion chamber of an incineration line and then is subjected to high-temperature incineration treatment, the incineration treatment of the high-temperature fused liquid waste material in the secondary combustion chamber is completed, the material is kept at the temperature capable of being fused into liquid by a tank car or a storage tank heated by steam, and the material is conveyed by a gear pump heated by steam or electricity, so that the material can be kept at the temperature capable of being fused into liquid; the pressure of the outlet of the pump is kept stable, the conveying pipeline, the valve and the instrument are heated by steam or electricity, the material is kept at the temperature that the material is melted into liquid, the steam is used as an atomizing medium, a spray gun adaptive to high-viscosity liquid is adopted, and the whole treatment method for incinerating the high-temperature molten liquid waste in the secondary combustion chamber is simple in structure, convenient to operate and better in using effect compared with the traditional mode.

Detailed Description

A method for treating high-temperature molten liquid waste by incineration in a secondary combustion chamber comprises the following operation steps:

s1: collecting materials: preparing a material collecting and storing box, guiding high-temperature melting waste into the collecting and storing box for storage, wherein the high-temperature melting waste is solid at normal temperature and has high heat value;

s2: pretreatment of waste materials: preparing a tank car or a storage tank heated by steam, and keeping high-temperature molten waste at a temperature capable of melting the material into a liquid state by using the tank car or the storage tank heated by the steam;

s3: conveying a liquid material: after the high-temperature melting waste is melted into a liquid state, preparing a gear pump, conveying the liquid material of the high-temperature melting waste to a second combustion chamber of the incineration line by utilizing the gear pump, wherein the gear pump needs to be circulated to keep the pressure of an outlet of the pump stable;

s4: conveying treatment: all conveying pipelines of the gear pump are provided with jacketed pipes, and when the high-temperature molten waste liquid material is conveyed, the material can be heated to the temperature for keeping the material molten into the liquid state by using steam;

s5: temperature constant temperature treatment: a valve group frame is arranged in a conveying pipe of the gear pump, a hand valve, a control valve, a stop valve, a flow meter and a pressure gauge are arranged on the valve group frame, electric tracing is needed, and the temperature of the electric tracing also needs to be capable of keeping the temperature of the material which is melted into liquid state;

s6: material treatment: atomizing and blowing the high-temperature molten waste liquid material;

s7: material incineration treatment: and (3) introducing the high-temperature molten waste liquid material into a secondary combustion chamber of the incineration line, and then carrying out high-temperature incineration treatment on the high-temperature molten waste liquid material, wherein the incineration treatment of the high-temperature molten waste liquid material in the secondary combustion chamber is completed.

Further, in step S2, the tank car or the storage tank is heated by steam to keep the temperature constant.

Further, the gear pump in the step S3 may maintain the temperature at which the high-temperature molten scrap is melted into a liquid state by means of steam or electric heating.

Further, the atomizing medium for the atomizing operation in the step S6 is steam, and the purging medium is also steam.

Further, the incineration in the step S7 uses a spray gun adapted to the high-viscosity liquid.

Further, in the step S2, the heating time of the tank car or the storage tank is 25-35min, and the heating melting point is 100-150 ℃.

Further, the heating temperature of the electric tracing in the step S5 is maintained at 120-140 ℃.

Further, in the step S7, the incineration time of the high-temperature molten liquid waste in the second combustion chamber is 35-45 min.

The working principle is as follows: preparing a material collecting box, leading high-temperature melting waste into the collecting box for storage, wherein the high-temperature melting waste is solid at normal temperature and has high heat value, preparing a tank car or a storage tank heated by steam, keeping the high-temperature melting waste at the temperature capable of melting the material into liquid by using the tank car or the storage tank heated by the steam, preparing a gear pump after the high-temperature melting waste is melted into liquid, conveying the high-temperature melting waste liquid to an incineration line secondary combustion chamber by using the gear pump, wherein the gear pump is provided with a circulating pump outlet with stable pressure, all conveying pipelines of the gear pump are provided with jacket pipes, heating the high-temperature melting waste liquid to the temperature capable of melting the material into liquid by using the steam when the high-temperature melting waste liquid is conveyed, a valve assembly frame is arranged in a conveying pipe of the gear pump, a hand valve is arranged on the valve assembly frame, a control valve, a stop valve and a flow meter are arranged on the valve assembly frame, The pressure gauge needs electric heat tracing, the temperature of the electric heat tracing also needs to be capable of keeping the temperature of the material molten into liquid, the liquid material of the high-temperature molten waste is atomized and blown, the liquid material of the high-temperature molten waste is introduced into the secondary combustion chamber of the incineration line and then is subjected to high-temperature incineration treatment, and the incineration treatment of the high-temperature molten liquid waste in the secondary combustion chamber is completed.

It is noted that, herein, relational terms such as first and second (a, b, etc.) and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.