CN214515269U - Charcoal wood sorting system for biomass incineration power plant slag - Google Patents

Abstract

The utility model discloses a charcoal wood sorting system of biomass incineration power plant slag includes a sorter, and the pan feeding mouth and the discharge gate of mud stone sorting unit of sorter are connected, have a separation shale shaker in the sorter, and two upper and lower discharge gates are separated into with the sorter to the separation shale shaker, and every discharge gate is connected to one and rolls equipment, and the delivery outlet that rolls equipment is connected to independent secondary sorter. The combustion value of the medium and large particle carbon powder produced by the device is 1.6-2.5 multiplied by 10⁷J/kg; the combustion value of the medium and small particle carbon powder is 0.8-1.2 x 10⁷J/kg, rootAccording to the difference of the combustion values, the carbon can be respectively utilized, the higher the combustion value of the carbon is, the higher the quality of the carbon is, the higher the economic value is, and the economic benefit and the social benefit of the slag are greatly improved.

Description

Charcoal wood sorting system for biomass incineration power plant slag

Technical Field

The utility model relates to a msw incineration field, concretely relates to charcoal wood sorting system of biomass incineration power plant slag.

Background

The biomass power generation is power generation by using biomass energy of biomass, is one of renewable energy power generation, and comprises direct combustion power generation of agricultural and forestry waste, gasification power generation of agricultural and forestry waste, waste incineration power generation, landfill gas power generation and methane power generation. World biomass power generation originated in the 70 th 20 th century, and when global oil crisis had broken out, danish began to actively develop clean renewable energy and vigorously pursue biomass power generation such as straw. Since 1990, biomass power generation has begun to grow vigorously in many countries in europe and america.

The garbage power generation comprises garbage incineration power generation and garbage gasification power generation, the problem of garbage disposal can be solved, meanwhile, the energy in the garbage can be recycled, resources are saved, and the garbage incineration power generation is that the heat emitted by the garbage in an incineration boiler is utilized to heat water to obtain superheated steam to push a steam turbine to drive a generator to generate power. The garbage burning technology mainly comprises a layered combustion technology, a fluidized bed combustion technology, a rotary combustion technology and the like. The developed gasification and melting incineration technology comprises two processes of gasification of garbage at the temperature of 450-640 ℃ and melting combustion of carbon-containing ash at the temperature of more than 1300 ℃, the garbage is thoroughly treated and the process is clean, partial resources can be recycled, and the gasification and melting incineration technology is considered to be the garbage power generation technology with the greatest prospect.

The slow development of garbage power generation is mainly limited by some technical or technological problems, for example, the highly toxic waste gas generated by combustion during power generation can not be effectively solved for a long time. A super garbage power generation technology is popularized in Japan, a novel gas smelting furnace is adopted, the temperature of the furnace is raised to 500 ℃, the power generation efficiency is also improved to about 25% from the past general 10%, and the discharge amount of toxic waste gas is reduced to within 0.5%, which is lower than the international specified standard. Of course, the cost of garbage power generation is still higher than that of conventional thermal power generation. Experts think that along with the continuous development of technologies in all links such as garbage recycling, processing, transportation, comprehensive utilization and the like, the process is scientific and advanced day by day, and a garbage power generation mode is likely to become one of the most economical power generation technologies. The long-term benefit and comprehensive index are better than the traditional power production. Garbage power generation in China just starts, but the prospect is optimistic. The harmful substances generated by the waste incineration power generation include that the smoke pollution is concerned about dioxin, waste water and waste leachate generated in the incineration process, and ash and dust are also concerned, but the pollution control of most of the waste incineration power generation in China reaches the standard basically. The project deslagging system adopts ash slag separation and dry ash dry discharge modes. The slag can be directly and comprehensively utilized or buried, and the slag conveying system adopts a mechanical slag removing mode, is conveyed to a slag bin by a scraping trigger and is transported to the outside of a factory for comprehensive utilization by a slag transporting vehicle.

At present, a large amount of waste incineration power generation is mainly performed in a biomass power plant, slag of the waste incineration power plant is generally processed in a landfill mode, a small amount of slag is also used for building materials, the economic value and the social value are not high, and the most important reason is that the slag is complex in components and difficult to sort.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's defect, provide a charcoal wood sorting system of biomass incineration power plant slag, the separation of charcoal and wood is difficult point always, when improving the slag greatly and select separately the precision, reduces the cost of selecting separately, improves the utilization level of slag.

The utility model discloses a following technical scheme realizes:

charcoal wood sorting system of biomass incineration power plant slag, including a sorter, the pan feeding mouth and the mud stone sorting unit's of sorter discharge gate are connected, have a separation shale shaker in the sorter, separate two discharge gates about the separation shale shaker separates into the sorter, and every discharge gate is connected to one and rolls equipment, rolls the delivery outlet of equipment and is connected to independent secondary sorter. In the field of slag treatment of biomass combustion power plants, some simple sorting is available at present, iron impurities in the slag are mainly removed by using magnets, and objects such as stones with large density and mud are removed by using buoyancy of water to obtain floaters, so that the process has certain defects: the classification is simple, iron impurities can be removed, and other metals cannot be removed; the floating mixture of charcoal and wood cannot be utilized, and needs to be aired or dried when being burnt; stone can be used as building material, but the utilization rate is not high; the mud is mixed in the water, and the sediment can be obtained through the sedimentation tank, so that the water can be recycled, but the waste consumption rate is high; the sediment can not be utilized, the occupied area is large, and the sediment can not be directly utilized. These problems are all present in the prior art wet sortingThe present inventors have found that, after much research on the slag of biomass-fired power plants, there are many findings: the slag is a mixture containing iron, metal, stone, soil, carbon, wood and dust, and the mixture is put together, if the mixture is directly used for landfill, the mixture can generate heat after the organic substances are decomposed by the action of time, and the problem of collapse also exists; how to sort the slag with good quality is always a problem; the inventor analyzes the slag, finds that the carbon is a raw material and has recycling value, such as the carbon is used for producing smokeless carbon and barbecue carbon for eating and drinking, and the like, but the carbon needs no soil, stones and wood inside the carbon, in order to screen the carbon, in the process of many years of experiments, the sorting system of the utility model is developed, firstly, the slag is primarily screened by a primary sorting system, the large-particle-diameter and large-weight parts are removed, the mixture with the particle diameter is sent to a mud stone sorting device, the mud stone sorting device removes the stones of small-particle mixture and medium-particle mixture which can not be sorted to obtain the carbon-wood mixture, because the carbon is the product after the wood is burnt, the density is relatively close, the existing method can not distinguish the carbon from the wood, and in order to solve the problem, the inventor carries out a lot of thinking and experiments, and in an accidental case, the inventor grasps a mixture of charcoal and wood by hands, and strongly kneads to find that the charcoal is broken, but the wood is not changed; the inventor of the invention invents a plurality of slag screening methods in the process of researching biomass slag for many years, generally the screened slag can obtain a mixture of charcoal and wood, and the charcoal can be obtained through subsequent screening; however, in the actual experimental process, the inventor finds the disadvantages of doing so: the carbon screened from the slag has different grades, and the experiment shows that: some charcoals have high combustion values and some charcoals have low combustion values, and through the phenomenon, the inventor analyzes that the obtained charcoals have different combustion raw materialsThe quality is different, if classification can be carried out according to the combustion value of the carbon, the carbon with different quality can be obtained, and can be used in different industries, so as to improve the added value of the carbon in the slag, however, how to carry out distinguishing screening is an unprecedented challenge, and the inventor researches and discovers that: in the slag, the source of charcoal is different, the main source has wood and straw, grass, combustible such as leaf, the product after burning is the grass ash, can not form charcoal, and tiny branch, saw-dust are in the incinerator, because the relation of its volume, through the incineration of same time, it is abundant to have all burnt basically, produce the ash completely, or the less charcoal of volume, its combustion value of bulky straw is not high, the combustion rate is faster than wood, through the combustion of same time, can form the grass ash, and the charcoal that partly unburnt, the granule of these charcoals is less, and in the charcoal of screening out, mainly derive from two parts: the combustion value of the mixture of the charcoal is unbalanced, through the discovery, the source of the charcoal and the existing rule thereof are analyzed, and according to the rule, the inventor selects the charcoal and the wood mixture with the particle sizes of two kinds of particles by setting a separation sieve mode, namely the mixture of medium and small particles and medium and large particles; then the two mixtures are respectively rolled and screened to remove wood, the quality of the rest carbon powder is balanced, and the test shows that the combustion value of the carbon powder in medium and large particles is 1.6-2.5 multiplied by 10⁷J/kg; the carbon powder in the medium and small particles has a combustion value of 0.8-1.2 x 10⁷J/kg, after sorting, the charcoals with different qualities can be respectively utilized according to different combustion values, the higher the combustion value of the charcoals is, the higher the quality of the charcoals is, and the higher the economic value is, the technical scheme of the invention can realize high-efficiency and accurate sorting of the furnace slag, accurately sort the charcoals with different qualities from the biomass fuel incineration furnace slag, and greatly improve the economic benefit and the social benefit of the furnace slag by classifying the quality of the charcoals.

Further, the mesh diameter of a sorting vibrating screen in the sorting machine is 3 mm. The inventor discovers through many years of research that charcoal and balloonflower charcoal can be distinguished more accurately to the partition about 3mm, adopts current aperture to be 3 mm's mesh screen, can accurately distinguish the charcoal of high-low quality.

Further, the rolling equipment is a counter mill or a ball mill. Through equipment such as to the mill, ball mill, can roll the mixture of charcoal and timber for the charcoal is smashed to the powder that granule is littleer, and timber keeps unbroken state because it contains a large amount of fibre simultaneously, and such state is favorable to subsequent screening.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

1. the carbon-wood separation system for the biomass incineration power plant slag separates carbon before rolling, and selects carbon-wood mixtures with two particle sizes, namely, mixtures with two specifications of medium and small particles and medium and large particles; then the two mixtures are respectively rolled and screened to remove wood, the quality of the rest carbon powder is balanced, and the test shows that the combustion value of the carbon powder in medium and large particles is 1.6-2.5 multiplied by 10⁷J/kg; the carbon powder in the medium and small particles has a combustion value of 0.8-1.2 x 10⁷J/kg, after sorting, the charcoals with different qualities can be respectively utilized according to different combustion values, the higher the combustion value of the charcoals is, the higher the quality of the charcoals is, and the higher the economic value is, the technical scheme of the invention can realize high-efficiency and accurate sorting of the furnace slag, accurately sort the charcoals with different qualities from the biomass fuel incineration furnace slag, and greatly improve the economic benefit and the social benefit of the furnace slag by classifying the quality of the charcoals;

2. compared with the wet separation process in the prior art, the charcoal wood separation system for the biomass incineration power plant slag has higher separation precision of the slag, more diversified products and a plurality of guiding effects on future development of the industry;

3. the utility model discloses biomass incineration power plant slag's charcoal wood system of selecting separately, for the wet process separation technology of prior art, the product purity is higher, and current slag wet separation, because slag, the dust of small granule can be attached to the surface of large granule slag under the effect of water, lead to the purity of every product not high, and the utility model discloses a screening process is gone on under dry state, and dust, small granule can not be attached to the surface of large granule, are favorable to improving the purity of every product;

4. compared with the wet separation process in the prior art, the charcoal wood separation system for the biomass incineration power plant slag has lower cost, and the existing wet separation process leads all materials to be saturated with moisture and various materials to be dried in use due to the direct soaking effect of water, thereby consuming a great deal of drying cost; the technical proposal of the utility model adopts the mode of crushing and drying at the beginning, the water content of the slag is not high, and the drying cost is much lower; the cost is greatly reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

fig. 1 is a schematic view of the present invention.

Reference numbers and corresponding part names in the drawings:

3-and charcoal wood sorting device, 31-sorting machine, 311-sorting vibrating screen, 32-rolling equipment and 32-secondary sorting machine.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.

Examples

As shown in figure 1, the charcoal wood sorting system of the biomass incineration power plant slag comprises a sorting machine 31, a sorting vibrating screen 311 with the mesh diameter of 3mm is arranged in the sorting machine 31, the sorting vibrating screen 311 is separated into an upper discharge port and a lower discharge port with the sorting machine 21, and the discharge ports of the upper part and the lower part are connectedThe output port of the ball mill 32 is connected to an independent secondary sorting machine 33 to obtain high-quality carbon powder, and the carbon powder has balanced quality and a combustion value of 1.6-2.5 multiplied by 10 through testing⁷J/kg; the discharge port at the lower part of the classifier 31 is also connected to a ball mill 32, the output port of the ball mill 32 is connected to an independent secondary classifier 33, and the obtained carbon powder has a combustion value of 0.8-1.2 × 10⁷Between J/kg, the vibration cleaning machine 21 is also connected with a second shakelong 217; according to specific production environment and national environmental protection requirements, a plurality of saxolone can be arranged for eliminating environmental pollution, common equipment such as the saxolone and a ball mill can be adopted for adjustment and replacement in the conventional equipment in the embodiment, equipment with similar functions can also be adopted for replacement, a vibration cleaning machine adopts a product of the Guangdong food machinery company of Danyang city, and a stone removing machine adopts a product of the Songtiang company as a replacement means and can be replaced.

After the device system of the embodiment is configured with equipment, 10-20 tons of slag are processed per hour, the yield of carbon is about 15%, more importantly, all screened products are used for producing organic fertilizers by using particles with the use value, dust and small particle size below 20 meshes, wherein the carbon is a main source of the organic fertilizers; the stones with medium grain diameter, namely stones with more than 20 meshes and less than 3CM are good building materials and gardening cultivation materials, the large stones are building materials, the recycled iron also has the commercial value of recycling, the problem of sewage treatment does not exist, and secondary pollution does not exist; the burning value of the carbon powder in the large particles in the product is 1.6-2.5 multiplied by 10⁷J/kg; the carbon powder in the medium and small particles has a combustion value of 0.8-1.2 x 10⁷J/kg, after sorting, the charcoals with different qualities can be respectively utilized according to different combustion values, the higher the combustion value of the charcoals is, the higher the quality of the charcoals is, and the higher the economic value is, the technical scheme of the invention can realize high-efficiency and accurate sorting of the furnace slag, accurately sort the charcoals with different qualities from the biomass fuel incineration furnace slag, and greatly improve the economic benefit and the social benefit of the furnace slag by classifying the quality of the charcoals.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (3)

1. Charcoal wood sorting system of biomass incineration power plant slag, its characterized in that includes a sorter (31), the pan feeding mouth and the discharge gate of mud stone sorting unit (2) of sorter (31) are connected, there is one in sorter (31) to select separately shale shaker (311), select separately shale shaker (311) and separate into two discharge gates from top to bottom with sorter (31), every discharge gate is connected to one and rolls equipment (32), the delivery outlet that rolls equipment (32) is connected to independent secondary sorter (33).

2. The charcoal wood sorting system for biomass incineration power plant slag according to claim 1, characterized in that: the mesh diameter of a sorting vibrating screen (311) in the sorting machine (31) is 3 mm.

3. The charcoal wood sorting system for biomass incineration power plant slag according to claim 1, characterized in that: the rolling equipment (32) is a counter mill or a ball mill.

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