阅读说明：本技术 一种油泥沙焚烧灰渣熔融玻璃态处理方法 (Molten glass state treatment method for oily sediment incineration ash ) 是由 陈辉 于 2021-08-21 设计创作，主要内容包括：本发明公开了一种油泥沙焚烧灰渣熔融玻璃态处理方法,涉及油泥沙焚烧技术领域。本发明包括如下步骤：步骤一、分拣油泥沙：将油泥沙进行分拣处理,将可以回收的油泥沙进行回收,不能回收的油泥沙进行集中收集；步骤二、加热油泥沙：将步骤一中集中收集的不能回收的油泥沙放入清水池中进行清洗后,将清洗好的油泥沙进行烘干处理；步骤三、混合油泥沙：将步骤二中烘干好油泥沙按一定比例混合好,将混合好的油泥沙输送至灰渣融炉中。本发明通过设置的灰渣融炉,可以把灰渣中的有机物进行焚毁,无机物在高温下变成稳定的玻璃态物质,减少了危险废物填埋场填埋处理的情况发生,减少了占用土地资源的情况发生,降低了泄露的安全隐患。(The invention discloses a molten glass state treatment method for oil sediment incineration ash, and relates to the technical field of oil sediment incineration. The invention comprises the following steps: step one, sorting oil silt: sorting the oil silt, recovering the recoverable oil silt, and collecting the unrecoverable oil silt in a centralized manner; step two, heating oil silt: placing the unrecoverable oily sediment collected in the step one into a clean water tank for cleaning, and then drying the cleaned oily sediment; step three, mixing oil silt: and D, well mixing the dried oil silt in the step two according to a certain proportion, and conveying the well mixed oil silt to an ash slag melting furnace. According to the invention, the ash slag melting furnace is arranged, so that organic matters in ash slag can be burnt, and inorganic matters become stable glass state substances at high temperature, thereby reducing the occurrence of landfill treatment of hazardous waste landfill sites, reducing the occurrence of land resource occupation, and reducing the potential safety hazard of leakage.)

1. A molten glass state treatment method for oil silt incineration ash is characterized by comprising the following steps:

step one, sorting oil silt: sorting the oil silt, recovering the recoverable oil silt, and collecting the unrecoverable oil silt in a centralized manner;

step two, heating oil silt: placing the unrecoverable oily sediment collected in the step one into a clean water tank for cleaning, and then drying the cleaned oily sediment;

step three, mixing oil silt: mixing the dried oil silt in the step two according to a certain proportion, and conveying the mixed oil silt into an ash slag melting furnace;

step four, burning the oily sediment: when the temperature in the ash slag melting furnace is equal to a threshold value, the ash slag melting furnace heats the oil silt mixed in the third step, all organic matters are burnt, and inorganic matters become stable glassy substances at high temperature;

identifying whether element precipitation harmful to the environment is generated: and detecting whether the elements harmful to the environment are separated out after the oil silt is burnt in the fourth step, and if so, fixing the elements harmful to the environment in the special glassy substance.

2. The method for melting and vitrifying slag from incineration of oil sludge and sand as claimed in claim 1, wherein in the second step and the third step, electricity is used as a heating method, natural gas and fuel oil can be used as supplementary fuel, the electric heating is achieved by connecting a power supply to a heating wire of the slag melting furnace to generate high temperature, the natural gas heating utilizes the heat energy generated by the combustion of the natural gas to be converted into mechanical energy of a gas turbine unit in the slag melting furnace, and utilizes the heat energy generated by the combustion of the gas to heat water vapor to be converted into mechanical energy of a steam turbine in the slag melting furnace, and the mechanical energy is finally converted into electric energy.

3. The method for vitrifying a molten ash from a sludge incineration plant as set forth in claim 2, wherein the fuel oil is supplied to the engine located in the ash melting furnace by a transfer pump to be transferred from the fuel oil storage tank to the fuel oil clarifying tank through a transfer pipe, and wherein the fuel oil is heated and then supplied to the engine through a fuel oil common tank, a fuel oil cleaner, and the like.

4. The method for melting and vitrifying slag from incineration of oil sludge sand as claimed in claim 1, wherein in the fourth step, the melting of the slag from oil sludge sand reaches the standard of general solid waste safe landfill, and the solid waste safe landfill is to be achieved: the permeability of the slag of the oil silt melting the lower soil or the combination part of the slag and the lining is less than 10-8 cm/s.

5. The method of claim 1, wherein an oil sediment ash melting furnace system is provided in the step three, and the oil sediment ash melting furnace system comprises: ash and slag mixing system, spiral pusher, high temperature melting furnace, flue gas processing system.

6. The method for molten glass state treatment of oily sediment incineration ash as claimed in claim 5, wherein the ash mixture is prepared by: 45-60 parts of ash residue, 5-10 parts of quick lime, 3-5 parts of gypsum, 8-12 parts of hydrated lime, 10-20 parts of ordinary portland cement, 2-5 parts of micro silica fume and 5-10 parts of engineering sand, wherein a high-performance water reducing agent is 0.5-1% of the sum of the cement and the hydrated lime, rock sand crystals are 1-1.5% of the sum of the ordinary portland cement and the hydrated lime, calcium formate is 0.5-1% of the sum of the ordinary portland cement and the hydrated lime, and the mixing ratio of the ordinary portland cement to the ash residue is 1: 4-4.5.

7. The method for melting and vitrifying oily sediment incineration ash as claimed in claim 6, wherein the screw pushing device comprises: the ash melting furnace comprises a motor and two threaded rods, wherein a belt is arranged between the two threaded rods in a transmission fit mode, the output end of the motor is connected with one of the threaded rods, a transport vehicle is arranged between the two threaded rods in a threaded fit mode, and the transport vehicle pushes ash which is mixed according to a certain proportion to the melting furnace.

8. The method for melting and vitrifying oil sludge and ash according to claim 7, wherein the threshold value of the fourth step is 1200 ℃, a self-operated temperature control valve is arranged in the ash melting furnace, a temperature sensor is arranged in the self-operated temperature control valve, the expansion of the liquid in the temperature sensor is uniform, the control function of the expansion is proportional control, and the volume of the temperature-sensitive liquid in the sensor expands or contracts along with the change of the temperature of the controlled medium.

9. The method for molten glass state treatment of oily sediment incineration ash as claimed in claim 8, wherein when the temperature of the controlled medium is higher than 1200 ℃, the temperature sensing liquid expands to push the valve core to close the valve downwards to reduce the flow of the heating medium, when the temperature of the controlled medium is lower than 1200 ℃, the temperature sensing liquid contracts, the return spring pushes the valve core to open to increase the flow of the heating medium, and the high temperature melting furnace gradually raises the temperature in the melting furnace to finally reach the ash melting temperature of 1200 ℃.

10. The method of claim 9, wherein the flue gas treatment system is a flue gas treatment system for treating flue gas generated in the high temperature melting furnace, and the flue gas treatment system comprises: one side of the water tank is provided with a pipeline, and one end of the pipeline is arranged on the upper side of the ash slag melting furnace.

Technical Field

The invention belongs to the technical field of oil sediment incineration, and particularly relates to a molten glass state treatment method for oil sediment incineration ash.

Background

The ash slag after the incineration of the hazardous waste is listed as the hazardous waste in the national hazardous waste list, most of the existing ash slag hazardous waste adopts a landfill process, occupies a large amount of land resources, and can generate potential environmental risks even when entering a landfill.

According to the national hazardous waste record, oily silt belongs to hazardous waste, ash and slag generated by burning the hazardous waste are regulated to be the hazardous waste, the conventional disposal method is to carry out special landfill treatment on the hazardous waste, and the method occupies land resources and can generate leakage potential safety hazard.

Disclosure of Invention

The invention aims to provide a molten glass state treatment method for oil sediment incineration ash, which solves the technical problem that the existing oil sediment is not easy to incinerate.

In order to achieve the purpose, the invention is realized by the following technical scheme:

a molten glass state treatment method for oil silt incineration ash comprises the following steps:

step one, sorting oil silt: sorting the oil silt, recovering the recoverable oil silt, and collecting the unrecoverable oil silt in a centralized manner;

step two, heating oil silt: placing the unrecoverable oily sediment collected in the step one into a clean water tank for cleaning, and then drying the cleaned oily sediment;

step three, mixing oil silt: mixing the dried oil silt in the step two according to a certain proportion, and conveying the mixed oil silt into an ash slag melting furnace;

step four, burning the oily sediment: when the temperature in the ash slag melting furnace is equal to a threshold value, the ash slag melting furnace heats the oil silt mixed in the third step, all organic matters are burnt, and inorganic matters become stable glassy substances at high temperature;

identifying whether element precipitation harmful to the environment is generated: and detecting whether the elements harmful to the environment are separated out after the oil silt is burnt in the fourth step, and if so, fixing the elements harmful to the environment in the special glassy substance.

Optionally, electricity can be used as a heating method in the second step and the third step, natural gas and fuel oil can be used as supplementary fuel, the electric heating is achieved by switching on a power supply to a heating wire of the ash slag melting furnace to generate high temperature, on one hand, the natural gas heating utilizes heat energy generated by natural gas combustion to be converted into mechanical energy of a gas turbine unit in the ash slag melting furnace, on the other hand, heat energy generated by gas is utilized to heat water vapor to be converted into mechanical energy of a steam turbine in the ash slag melting furnace, and finally the mechanical energy is converted into electric energy.

Alternatively, the fuel oil is supplied to an engine in the ash melting furnace, the fuel oil is conveyed from a fuel oil storage tank to a fuel oil clarifying tank through a conveying pipe by using a conveying pump, and the fuel oil is heated and then supplied to the engine through a fuel oil common oil tank, a fuel oil cleaner and the like.

Optionally, the oil sediment ash slag is melted in the fourth step to reach the standard of general solid waste safe landfill, and the solid waste safe landfill is to reach the following steps: the permeability of the oily silt slag molten lower soil or the place where the slag is combined with the lining is less than 10-8cm/s, the lowest land landfill is required to be positioned above the ground water level, appropriate measures are taken to control and lead out surface water, a leachate collection, treatment and monitoring system is required, covering materials or linings are required to prevent gas release, the source, nature and quantity of the waste to be treated are recorded, and incompatible wastes are separately treated.

Optionally, be provided with oily sediment ash slag in the ash slag melts stove system in step three, oily sediment ash slag melts the stove system and includes: ash and slag mixing system, spiral pusher, high temperature melting furnace, flue gas processing system.

Optionally, the ash mixing material is prepared from: 45-60 parts of ash residue, 5-10 parts of quick lime, 3-5 parts of gypsum, 8-12 parts of hydrated lime, 10-20 parts of ordinary portland cement, 2-5 parts of micro silica fume and 5-10 parts of engineering sand, wherein a high-performance water reducing agent is 0.5-1% of the sum of the cement and the hydrated lime, rock sand crystals are 1-1.5% of the sum of the ordinary portland cement and the hydrated lime, calcium formate is 0.5-1% of the sum of the ordinary portland cement and the hydrated lime, and the mixing ratio of the ordinary portland cement to the ash residue is 1: 4-4.5.

Optionally, the screw pushing device comprises: the ash melting furnace comprises a motor and two threaded rods, wherein a belt is arranged between the two threaded rods in a transmission fit mode, the output end of the motor is connected with one of the threaded rods, a transport vehicle is arranged between the two threaded rods in a threaded fit mode, and the transport vehicle pushes ash which is mixed according to a certain proportion to the melting furnace.

Optionally, the threshold value in the fourth step is 1200 ℃, a self-operated temperature regulating valve is arranged in the ash slag melting furnace, a temperature sensor is arranged in the self-operated temperature regulating valve, the liquid in the temperature sensor expands uniformly, the control function of the temperature sensor is proportional regulation, and when the temperature of a controlled medium changes, the volume of the temperature sensing liquid in the sensor expands or contracts along with the temperature sensing liquid.

Optionally, when the temperature of the controlled medium is higher than 1200 ℃, the temperature sensing liquid expands to push the valve core to close the valve downwards, so that the flow of the heating medium is reduced, when the temperature of the controlled medium is lower than 1200 ℃, the temperature sensing liquid contracts, the return spring pushes the valve core to open, so that the flow of the heating medium is increased, and the temperature in the melting furnace is gradually increased in the high-temperature melting furnace, so that the ash melting temperature of 1200 ℃ is finally reached.

Optionally, the flue gas treatment system is used for treating flue gas generated in the high-temperature melting furnace, and the flue gas treatment system comprises: the water tank, one side of water tank sets up the pipeline, and the one end of pipeline is installed on ash slag melting furnace, utilizes the characteristic that some material easily dissolves in water in the foul smell, makes the foul smell composition directly contact with water to dissolve in water and reach the deodorization purpose.

The embodiment of the invention has the following beneficial effects:

according to the embodiment of the invention, the ash slag melting furnace is arranged, so that organic matters in ash slag can be incinerated, and inorganic matters become stable glassy substances at high temperature, so that the condition of landfill treatment of hazardous waste landfill sites is reduced, the condition of occupying land resources is reduced, and the potential safety hazard of leakage is reduced.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic flow chart of the apparatus according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

To maintain the following description of the embodiments of the present invention clear and concise, a detailed description of known functions and known components of the invention have been omitted.

Referring to fig. 1, in this embodiment, a method for processing molten glass state of oil silt incineration ash is provided, which includes the following steps:

step one, sorting oil silt: sorting the oil silt, recovering the recoverable oil silt, and collecting the unrecoverable oil silt in a centralized manner;

step two, heating oil silt: placing the unrecoverable oily sediment collected in the step one into a clean water tank for cleaning, and then drying the cleaned oily sediment;

step three, mixing oil silt: mixing the dried oil silt in the step two according to a certain proportion, and conveying the mixed oil silt into an ash slag melting furnace;

step four, burning the oily sediment: when the temperature in the ash slag melting furnace is equal to a threshold value, the ash slag melting furnace heats the oil silt mixed in the third step, all organic matters are burnt, and inorganic matters become stable glassy substances at high temperature;

identifying whether element precipitation harmful to the environment is generated: and detecting whether the elements harmful to the environment are separated out after the oil silt is burnt in the fourth step, and if so, fixing the elements harmful to the environment in the special glassy substance.

The application of one aspect of the embodiment is as follows: firstly, mixing ash and slag according to a certain proportion through an ash and slag mixing system, conveying the mixed ash and slag to a high-temperature melting furnace by a spiral pushing device, burning organic matters in the ash and slag when the high-temperature melting furnace reaches 1200 ℃, and changing the inorganic matters into stable glassy substances at high temperature. It should be noted that the electric devices referred to in this application may be powered by a storage battery or an external power source.

Through the lime-ash melt furnace that sets up, can burn the organic matter in the lime-ash, the inorganic matter becomes stable glass state material under high temperature, has reduced the condition emergence of hazardous waste landfill processing, has reduced the condition emergence that occupies land resource, has reduced the potential safety hazard of revealing.

It should be noted that: the ash is slag particles with the diameter of 0.5-5.0 mm, mainly generated in the coal slurry particle atomization combustion process in the gasification furnace, after the particles are collided and sintered, the particles enter a chilling water bath along with air flow, and are chilled and crushed, and the main components of the ash are shown in the table:

composition (I)	SiO2	Al203	Fe203	CaO	Mgo	Others
							Content (wt.)	39.67	26.77	12.80	9.96	2.43	8.37

In the second step and the third step of the embodiment, electricity can be used as a heating method, natural gas and fuel oil can be used as supplementary fuel, the electric heating is achieved by switching on a power supply to a heating wire of the ash melting furnace to generate high temperature, on one hand, the natural gas heating utilizes heat energy generated by natural gas combustion to be converted into mechanical energy of a gas turbine set in the ash melting furnace, on the other hand, heat energy generated by gas is utilized to heat water vapor to be converted into mechanical energy of a steam turbine in the ash melting furnace, and finally the mechanical energy is converted into electric energy.

The fuel oil of the embodiment is supplied to an engine in a clinker melting furnace, the fuel oil is conveyed from a fuel oil storage tank to a fuel oil clarifying tank through a conveying pipe by a conveying pump, and after the fuel oil is heated, the fuel oil is supplied to the engine through a fuel oil common oil tank, a fuel oil cleaner and the like.

In the fourth step of this embodiment, the oil silt ash is melted to reach the standard of general solid waste safe landfill, and the solid waste safe landfill is to reach: the permeability of the oily silt slag molten lower soil or the place where the slag is combined with the lining is less than 10-8cm/s, the lowest land landfill is required to be positioned above the ground water level, appropriate measures are taken to control and lead out surface water, a leachate collection, treatment and monitoring system is required, covering materials or linings are required to prevent gas release, the source, nature and quantity of the waste to be treated are recorded, and incompatible wastes are separately treated.

The ash slag melts in the step three of this embodiment and is provided with oily sediment ash slag and melts a stove system, and oily sediment ash slag melts a stove system and includes: ash and slag mixing system, spiral pusher, high temperature melting furnace, flue gas processing system.

The ash mixing material of the embodiment is prepared from the following components: 45-60 parts of ash residue, 5-10 parts of quick lime, 3-5 parts of gypsum, 8-12 parts of hydrated lime, 10-20 parts of ordinary portland cement, 2-5 parts of micro silica fume and 5-10 parts of engineering sand, wherein a high-performance water reducing agent is 0.5-1% of the sum of the cement and the hydrated lime, rock sand crystals are 1-1.5% of the sum of the ordinary portland cement and the hydrated lime, calcium formate is 0.5-1% of the sum of the ordinary portland cement and the hydrated lime, and the mixing ratio of the ordinary portland cement to the ash residue is 1: 4-4.5.

The screw pushing device of the embodiment comprises: the ash melting furnace comprises a motor and two threaded rods, wherein a belt is arranged between the two threaded rods in a transmission fit mode, the output end of the motor is connected with one of the threaded rods, a transport vehicle is arranged between the two threaded rods in a threaded fit mode, and the transport vehicle pushes ash which is mixed according to a certain proportion to the melting furnace.

In the fourth step of the embodiment, the threshold value is 1200 ℃, a self-operated temperature regulating valve is arranged in the ash melting furnace, a temperature sensor is arranged in the self-operated temperature regulating valve, the liquid in the temperature sensor expands uniformly, the control function of the temperature sensor is proportional regulation, and when the temperature of a controlled medium changes, the volume of the temperature sensing liquid in the sensor expands or contracts along with the temperature sensing liquid.

When the temperature of the controlled medium is higher than 1200 ℃, the temperature sensing liquid expands to push the valve core to close the valve downwards, the flow of the heating medium is reduced, when the temperature of the controlled medium is lower than 1200 ℃, the temperature sensing liquid contracts, the return spring pushes the valve core to open, the flow of the heating medium is increased, and the high-temperature melting furnace gradually heats the inside of the melting furnace and finally reaches the ash melting temperature of 1200 ℃.

The flue gas processing system of this embodiment is to handle the flue gas that produces in the high temperature melting furnace, and flue gas processing system includes: the water tank, one side of water tank sets up the pipeline, and the one end of pipeline is installed on ash slag melting furnace, utilizes the characteristic that some material easily dissolves in water in the foul smell, makes the foul smell composition directly contact with water to dissolve in water and reach the deodorization purpose.

The above embodiments may be combined with each other.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.