CN110615690A - Process method for producing porous building block - Google Patents
Process method for producing porous building block Download PDFInfo
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- CN110615690A CN110615690A CN201910932663.XA CN201910932663A CN110615690A CN 110615690 A CN110615690 A CN 110615690A CN 201910932663 A CN201910932663 A CN 201910932663A CN 110615690 A CN110615690 A CN 110615690A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
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- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/1321—Waste slurries, e.g. harbour sludge, industrial muds
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- C—CHEMISTRY; METALLURGY
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/1324—Recycled material, e.g. tile dust, stone waste, spent refractory material
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- C—CHEMISTRY; METALLURGY
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- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/1328—Waste materials; Refuse; Residues without additional clay
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- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/135—Combustion residues, e.g. fly ash, incineration waste
- C04B33/1352—Fuel ashes, e.g. fly ash
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- C—CHEMISTRY; METALLURGY
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- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/138—Waste materials; Refuse; Residues from metallurgical processes, e.g. slag, furnace dust, galvanic waste
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- C—CHEMISTRY; METALLURGY
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- C04B33/00—Clay-wares
- C04B33/30—Drying methods
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/32—Burning methods
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
- C04B38/063—Preparing or treating the raw materials individually or as batches
- C04B38/0635—Compounding ingredients
- C04B38/0645—Burnable, meltable, sublimable materials
- C04B38/0675—Vegetable refuse; Cellulosic materials, e.g. wood chips, cork, peat, paper
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
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Abstract
The invention discloses a process method for producing porous building blocks, which relates to the related technical field of building block production and comprises the following steps: a: selecting materials: taking odorless sludge, inorganic residue obtained by solid waste treatment, tailings and straw powder as raw materials; b: mixing: putting the raw materials into a stirrer for stirring; c: molding: molding the raw materials in a mold; d: drying: and (3) drying the formed building block blank by utilizing the waste heat of the high-temperature flue gas generated in the sintering process, and E: sintering; and (4) putting the dried building block green body into a tunnel kiln for sintering to finally obtain the light porous building block. The invention takes the odorless sludge, the inorganic residue after solid waste treatment, the tailings and the straw powder as raw materials, thereby achieving the purpose of comprehensive resource treatment of the sludge, the electrodeless residue, the straw and other wastes; on the other hand, the gaps left after the straw powder is burned out are utilized to form the water permeable channels, so that the building blocks have certain water permeability and meet the requirement of ground laying of sponge cities while the weight of the building blocks is reduced.
Description
Technical Field
The invention relates to the technical field related to building block production, in particular to a process method for producing a porous building block.
Background
The building block is an important urban public facility construction material, and the permeable building block is necessary for sponge city construction. The concept of sponge city has been proposed for a long time, but the construction of sponge city is very slow, and the fundamental reason is that there is no ideal permeable building material.
About 50 hundred million tons of inorganic solid waste and about 9 million tons of straws are produced in China every year. The disposal of inorganic waste and straw has become a key object to be disposed of in the construction of non-waste cities. Sludge disposal, which is closely related to people's lives and regional environmental governments, has already raised the agenda of the national environmental protection sector and local governments. Sludge treatment has three problems: stabilization (elimination of malodors), reduction (deep dehydration), and final elimination. The separate disposal of sludge has the following problems: the odor emitted by the interaction of organic matters in the sludge and microorganisms is accompanied with the life cycle of the sludge, which brings endless troubles for the storage, transportation and disposal of the sludge and is difficult to treat. The moisture content of the sludge is high, the drying energy consumption is high, and in order to overcome the viscous phenomenon, complicated equipment needs to be input, so that the sludge disposal cost is high.
The problems of site selection and operation of treatment items are continuous in order to treat the stink emitted in the sludge drying process. The sludge not only contains inorganic matters, but also contains organic matters, microorganism corpses and heavy metal ions in a certain proportion, and the independent recycling is difficult to realize. Meanwhile, a large amount of inorganic waste is continuously generated in the smelting industry, the construction industry, the waste treatment process and the like, and the treatment is urgently needed.
Therefore, it is necessary to provide a process for producing porous blocks to solve the above problems.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a process method for producing porous building blocks, which solves the problems of high investment cost for sludge treatment, environmental pollution caused by waste, difficulty in meeting the ground laying requirement of sponge cities for the building blocks and the like.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme:
a: selecting materials: taking odorless sludge, inorganic residues treated by solid waste and tailings as aggregate raw materials, proportioning according to the content of oxides such as silicon oxide, iron oxide, calcium oxide, aluminum oxide and the like in various materials, and conveying the materials to a storage bin through a belt after proportioning;
b: mixing: weighing the prepared aggregate raw materials by a weigher, mixing the weighed materials with the straw powder according to a certain proportion, putting the mixture into a material mixing stirrer, adding process water and functional additives into the stirrer, and uniformly mixing;
c: molding: extruding the uniformly mixed material through a screw extruder, cutting into blocks, mechanically stacking, and sending into a drying area;
d: drying: and (3) drying the building block by utilizing the waste heat of high-temperature flue gas generated in the sintering process, and reducing the moisture of the building block blank to about 5%.
E: sintering; sending the dried building block green body into a tunnel kiln for sintering, wherein the sintered fuel is organic waste, straw and other biomass pyrolysis to generate noncondensable combustible gas and pyrolysis oil at normal temperature, and the tunnel kiln is provided with a tail gas treatment system;
optionally, in the step a, the odorless sludge is sludge from a domestic sewage plant, sludge from an industrial sewage plant, sludge from a sludge process of advanced oxidation modification to kill microorganisms and destroy microbial cell structures, the solid waste treatment residue is domestic garbage, industrial solid waste, medical waste and hazardous waste, the solid waste treatment residue is obtained by crushing and treating the domestic garbage, the industrial solid waste, the medical waste and the hazardous waste into powder of less than 150 meshes, the tailings are inorganic wastes of mine residues, metal smelting tailings, fly ash and coal gangue, the straw powder is obtained by crushing and screening straws, the straw powder is a material with the size of 1-5 mm and the length-diameter ratio, preferably bamboo scrap powder or wheat straw powder without micro-powder, and 500kg/M of the straw powder3Straw powder with the volume weight of about 50 percent is added into the building block raw material, and the oxide comprises the following components: 50% of silicon oxide, 10% of ferric oxide, 34% of calcium oxide and 6% of aluminum oxide.
Optionally, the ratio of the raw materials to the process water in the step B is as follows: 7: 3, the functional additive is used for improving the compatibility of the straw powder and the raw materials, and the addition proportion of the functional additive accounts for 1 percent of the raw materials.
Optionally, the tail gas treatment system in the step D is used for collecting and treating moisture carried in the dried carrier gas, and the temperature in the tunnel kiln is 800-1200 ℃.
Optionally, the top fixedly connected with fixing base of tunnel cave, the intercommunicating pore has been seted up at the middle part of fixing base, the fixed slot has been seted up on the top of fixing base, tail gas treatment system's bottom is located the fixed slot, the draw-in groove has all been seted up to tail gas treatment system's both sides bottom, the mounting groove has all been seted up to the both ends inside of fixing base, be equipped with the inserted bar in the mounting groove, the one end of inserted bar runs through fixing base and fixedly connected with handle, the other end of inserted bar runs through the fixing base and is located the fixed slot, the return spring has been cup jointed in the outside of inserted bar, the one end and the mounting groove fixed connection of return spring, the other end fixedly connected with stopper of return.
Optionally, the limiting block is connected with the mounting groove in a sliding manner, and the insertion rod is matched with the clamping groove.
Optionally, the diameter of the fixing groove is larger than that of the communicating hole, the communicating hole is communicated with a tail gas treatment system, the tail gas treatment system is matched with the fixing groove, a sealing gasket is fixedly connected to the bottom of the fixing groove, and the sealing gasket is attached to the tail gas treatment system.
Optionally, the top end of the tail gas treatment system is fixedly connected with a conduction pipe, the top end of the conduction pipe is fixedly connected with a flange, and the conduction pipe is used for connecting an external pipeline.
(III) advantageous effects
The invention provides a process method for producing porous building blocks, which has the following beneficial effects:
(1) the invention takes the odorless sludge, the inorganic residue after solid waste treatment, the tailings and the straw powder as raw materials, on one hand, the final destination of the sludge is solved, the sludge landfill is reduced, on the other hand, the sludge realizes the cooperative treatment of the inorganic residue after solid waste treatment, the straw powder and the like, and the waste treatment cost is greatly reduced.
(2) The invention utilizes non-condensable combustible gas and pyrolysis oil generated by pyrolysis of organic wastes, straws and other biomass at normal temperature as sintering fuel, collects and treats water carried in dried carrier gas, prevents pollutants carried with water vapor from diffusing, and protects the environment.
(3) According to the fired porous building block, the water permeable channel is formed by utilizing the gaps left after the straw powder is lost, so that the weight of the building block is reduced, the building block has certain water permeability, and the building block is designed into a high-strength and high-wear-resistance building block with water permeability through the design of the matrix performance and the porosity, so that the requirement of ground laying of a sponge city is met.
(4) The tail gas treatment system is convenient to mount and dismount through the matching arrangement of the fixing seat, the fixing groove, the clamping groove, the mounting groove, the inserting rod, the handle, the limiting block and the return spring, the tail gas treatment system is more trouble-saving and labor-saving when being mounted, cleaned, maintained and replaced, the operation difficulty is reduced, and the working efficiency is improved.
Drawings
FIG. 1 is a schematic process flow diagram of the present invention;
FIG. 2 is a schematic structural view of the porous block of the present invention;
FIG. 3 is a schematic view of the connection between the tunnel kiln and the tail gas treatment system of the present invention;
FIG. 4 is a schematic sectional view of the tunnel kiln fixing base and the tail gas treatment system according to the present invention.
In the figure: tunnel cave 1, tail gas processing system 2, conduction pipe 3, fixing base 4, intercommunicating pore 5, fixed slot 6, sealed pad 7, draw-in groove 8, mounting groove 9, inserted bar 10, handle 11, stopper 12, return spring 13.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the present invention provides a technical solution:
example one
A process method for producing porous building blocks comprises the following steps:
a: selecting materials: taking odorless sludge, inorganic residue after solid waste treatment, tailings and straw powder as raw materials. The odorless sludge is sludge of a domestic sewage plant, sludge of an industrial sewage plant and sludge, and the sludge is subjected to advanced oxidation modification to kill microorganisms and destroy the cell structure of the microorganisms; the inorganic residue of the solid waste treatment is powder with the particle size less than 150 meshes, which is obtained by crushing the inorganic residue after comprehensive resource treatment of domestic garbage, industrial solid waste, medical waste and hazardous waste; the tailings are inorganic wastes of ore dressing residues, metal smelting tailings, coal ash and coal gangue, and the straw powder is a part of straws which are crushed and screened to remove micro powder with the size of 2mm-3 mm; preferably, the powder is bamboo dust powder or wheat straw powder. 500kg/M3Straw powder with volume weight of about 50 percent is added into the building block raw materialThe aggregate raw material is proportioned according to the content of oxides such as silicon oxide, iron oxide, calcium oxide, aluminum oxide and the like in various materials, and the content of the sintered body oxides is as follows: 50% of silicon oxide, 10% of ferric oxide, 34% of calcium oxide and about 6% of aluminum oxide, uniformly mixing in proportion, weighing, metering and discharging;
b: mixing: the raw materials are sent into a stirrer, then process water and functional auxiliary agents are added into the stirrer, and the proportion of the aggregate raw materials to the process water is as follows: 7: 3, the functional additive is used for improving the compatibility of the straw powder and the raw materials, the addition proportion of the functional additive accounts for 1 percent of the raw materials, and the raw materials are uniformly stirred;
c: molding: extruding the uniformly mixed material through a screw extruder, cutting into blocks, mechanically stacking, and sending into a drying area;
d: forming and drying: drying the building block by utilizing the waste heat of high-temperature flue gas generated in the sintering process, and reducing the moisture of a building block blank to about 5%;
e: sintering; sending the dried building block green body into a tunnel kiln for sintering, wherein the sintered fuel is organic waste, straw and other biomass pyrolysis to generate noncondensable combustible gas and pyrolysis oil at normal temperature, and the tunnel kiln is provided with a tail gas treatment system; the temperature in the tunnel kiln is 900 ℃;
example two
A process method for producing porous building blocks comprises the following steps:
a: selecting materials: the method is characterized in that odorless sludge, inorganic residues obtained by solid waste treatment, tailings and straw powder are used as raw materials, the odorless sludge is sludge of a domestic sewage plant, sludge of an industrial sewage plant and sludge obtained by advanced oxidation modification sterilization of microorganisms and destruction of microbial cell structures, the solid waste treatment residues are electrodeless residues obtained by comprehensive recycling treatment of domestic garbage, industrial solid waste, medical waste and hazardous waste, the electrodeless residues are crushed and treated into powder with the size of less than 150 meshes, the tailings are inorganic wastes of mineral separation residues, metal smelting tailings, coal ash and coal gangue, the straw powder is obtained by crushing and screening straws, micro powder is removed, the size of the straw powder is 3-4 mm, and the bamboo dust or the straw powder is optimal; 500kg/M3Adding 50% straw powder into the bulk weight building block raw material, and mixing the aggregate raw material with silicon oxide and oxygen in various materialsThe contents of oxides such as iron oxide, calcium oxide, aluminum oxide and the like are proportioned, and the contents of the oxides are as follows: 50% of silicon oxide, 10% of ferric oxide, 34% of calcium oxide and about 6% of aluminum oxide, and sending the mixture into a storage bin after proportioning;
b: mixing: weighing aggregate raw materials, feeding the aggregate raw materials into a stirrer, and then adding straw powder, process water and functional additives in a metering manner, wherein the aggregate raw materials and the process water are in the following proportion: 7: 3, the functional additive is used for improving the compatibility of the straw powder and the raw materials, the addition proportion of the functional additive accounts for 1 percent of the raw materials, and the raw materials are uniformly stirred;
d: forming and drying: drying the building block by utilizing the waste heat of high-temperature flue gas generated in the sintering process, and reducing the moisture of a building block blank to about 5%;
e: sintering; sending the dried building block green body into a tunnel kiln for sintering, wherein the sintered fuel is organic waste, straw and other biomass pyrolysis to generate noncondensable combustible gas and pyrolysis oil at normal temperature, and the tunnel kiln is provided with a tail gas treatment system; the temperature in the tunnel kiln is 1000 ℃;
EXAMPLE III
A process method for producing porous building blocks comprises the following steps:
a: selecting materials: the method is characterized in that odorless sludge, inorganic residues obtained by solid waste treatment, tailings and straw powder are used as raw materials, the odorless sludge is sludge of a domestic sewage plant, sludge of an industrial sewage plant and sludge obtained by advanced oxidation modification sterilization of microorganisms and destruction of microbial cell structures, the solid waste treatment residues are electrodeless residues obtained by comprehensive recycling treatment of domestic garbage, industrial solid waste, medical waste and hazardous waste, the electrodeless residues are crushed and treated into powder with the size of less than 150 meshes, the tailings are inorganic wastes of mineral separation residues, metal smelting tailings, coal ash and coal gangue, the straw powder is obtained by crushing and screening straws, micro powder is removed, the part with the size of 4mm-5mm is obtained, and the bamboo dust or the straw powder is optimal; 500kg/M3Adding straw powder with the proportion of about 50% into the building block raw materials with volume weight, and proportioning the aggregate raw materials according to the contents of oxides such as silicon oxide, ferric oxide, calcium oxide, aluminum oxide and the like in various materials, wherein the contents of the components of the oxides are as follows: 49% of silicon oxide, 11% of ferric oxide, 33% of calcium oxide and about 7% of aluminum oxide, and sending the mixture into a storage bin after proportioning;
b: mixing: weighing aggregate raw materials, feeding the aggregate raw materials into a stirrer, and then adding straw powder, process water and functional additives in a metering manner, wherein the aggregate raw materials and the process water are in the following proportion: 7: 3, the functional additive is used for improving the compatibility of the straw powder and the raw materials, the addition proportion of the functional additive accounts for 1 percent of the raw materials, and the raw materials are uniformly stirred;
d: forming and drying: drying the building block by utilizing the waste heat of high-temperature flue gas generated in the sintering process, and reducing the moisture of a building block blank to about 5%;
e: sintering; sending the dried building block green body into a tunnel kiln for sintering, wherein the sintered fuel is organic waste, straw and other biomass pyrolysis to generate noncondensable combustible gas and pyrolysis oil at normal temperature, and the tunnel kiln is provided with a tail gas treatment system; the temperature in the tunnel kiln is 1200 ℃;
the porous building block can be prepared by the three groups of embodiments, wherein the porous building block prepared by the second group of embodiments has the best performance, the volume weight of the building block is related to the adding amount of the straw powder, the proportion of the auxiliary agent is better when the inorganic mud material and the straw are mixed, the proportion of the inorganic mud material determines the heavy metal leaching performance and the strength of the product after winding, and the method utilizes the gap left after the straw powder is burned out to form a water permeable channel, so that the weight of the building block is reduced, the building block has certain water permeability on the other hand, and the building block is designed into the high-strength and high-wear-resistant building block with water permeability through the design of the matrix performance and the void ratio, so that the requirement of paving the ground in a sponge city is met.
The top end of the tunnel kiln 1 is fixedly connected with a fixed seat 4, the middle part of the fixed seat 4 is provided with a communicating hole 5, the top end of the fixed seat 4 is provided with a fixed groove 6, the bottom end of the tail gas treatment system 2 is positioned in the fixed groove 6, the top end of the tail gas treatment system 2 is fixedly connected with a conduction pipe 3, the top end of the conduction pipe 3 is fixedly connected with a flange, the conduction pipe 3 is used for connecting an external pipeline, the bottom ends of the two sides of the tail gas treatment system 2 are respectively provided with a clamping groove 8, the inner parts of the two ends of the fixed seat 4 are respectively provided with a mounting groove 9, an inserting rod 10 is arranged in the mounting groove 9, one end of the inserting rod 10 penetrates through the fixed seat 4 and is fixedly connected with a handle 11, the other end of the inserting rod 10 penetrates through the fixed seat 4 and is positioned in, stopper 12 and inserted bar 10 fixed connection, stopper 12 and mounting groove 9 sliding connection, inserted bar 10 and the 8 looks adaptations of draw-in groove, the diameter of fixed slot 6 is greater than the intercommunicating pore 5, intercommunicating pore 5 is linked together with tail gas processing system 2, tail gas processing system 2 and the 6 looks adaptations of fixed slot, the sealed pad 7 of bottom fixedly connected with of fixed slot 6, sealed pad 7 is connected with the 2 laminating of tail gas processing system, through fixing base 4, fixed slot 6, draw-in groove 8, mounting groove 9, inserted bar 10, handle 11, stopper 12 and the cooperation setting between the power spring 13, the installation and the dismantlement of tail gas processing system 2 have been made things convenient for, in the installation clearance, it is laborsaving more laborsaving to maintain and change tail gas processing system 2, the operation degree of difficulty has been reduced, and the.
In summary, the following steps: according to the production process method of the porous building block, the odorless sludge, the inorganic residues after solid waste treatment, the tailings and the straw powder are used as raw materials, so that on one hand, the final destination of the sludge is solved, and the sludge landfill amount is reduced; on the other hand, the cooperative recycling treatment of inorganic residues, tailings, straw powder and other wastes of the solid waste treatment is realized, and the waste treatment cost is greatly reduced; meanwhile, normal-temperature non-condensable combustible gas and pyrolysis oil generated by pyrolysis of organic wastes, straws and other biomass are used as sintering fuels, so that the purpose of waste co-treatment is achieved. The water carried in the carrier gas after the building block green body is dried is collected and treated, so that the pollutant carried along with the water vapor is prevented from being diffused, and the environment is protected.
It is noted that in the present disclosure, unless otherwise explicitly specified or limited, a first feature "on" or "under" a second feature may be directly contacted with the first and second features, or indirectly contacted with the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (8)
1. The process method for producing the porous building block is characterized by comprising the following steps:
a: selecting materials: taking odorless sludge, inorganic residues treated by solid waste and tailings as aggregate raw materials, proportioning according to the content of oxides of silicon oxide, iron oxide, calcium oxide and aluminum oxide in various materials, and conveying the materials to a storage bin through a belt after proportioning;
b: mixing: weighing the prepared aggregate raw materials by a weigher, mixing the weighed materials with the straw powder according to a certain proportion, putting the mixture into a material mixing stirrer, adding process water and functional additives into the stirrer, and uniformly mixing;
c: molding: extruding the uniformly mixed material through a screw extruder, cutting into blocks, mechanically stacking, and sending into a drying area;
d: drying: drying the building block by using the waste heat of high-temperature flue gas generated in the sintering process, and reducing the water content of a building block blank to 4-5%;
e: sintering; and (3) sending the dried building block green body into a tunnel kiln for sintering, wherein the sintered fuel is noncondensable combustible gas and pyrolysis oil generated by pyrolysis of biomass such as organic waste, straw and the like, and the tunnel kiln is provided with a tail gas treatment system.
2. The process for producing a porous block according to claim 1, wherein:
the odorless sludge in the step A is sludge of a domestic sewage plant,Sludge and sludge of an industrial sewage plant are subjected to advanced oxidation modification, microorganisms are killed, and the cell structure of microorganisms is destroyed, solid waste treatment residues are powder with the particle size of less than 150 meshes after electrodeless residues obtained after comprehensive resource treatment of domestic garbage, industrial solid waste, medical waste and hazardous waste are crushed, tailings are inorganic wastes of ore dressing residues, metal smelting tailings, coal ash and coal gangue, straw powder is obtained by crushing and screening straws, and 500kg/M of powder with the particle size of 1-5 mm is taken3Adding 45-55% of straw powder into the building block raw material in volume weight, wherein the sintered aggregate has the following components: 48-52% of silicon oxide, 8-12% of ferric oxide, 32-36% of calcium oxide and 5-7% of aluminum oxide.
3. The process for producing a porous block according to claim 1, wherein:
the bone material raw material and the process water in the step B are in proportion as follows: 7: 3, the functional additive is used for improving the compatibility of the straw powder and the raw materials, and the addition proportion of the functional additive accounts for 1 percent of the raw materials.
4. The process for producing a porous block according to claim 1, wherein:
and E, collecting and processing moisture carried in the dried tail gas in the tail gas processing system in the step E, wherein the temperature in the tunnel kiln is 800-1200 ℃.
5. The process for producing a porous block according to claim 1, wherein:
the tunnel kiln is characterized in that a fixed seat (4) is fixedly connected to the top end of the tunnel kiln (1), a communicating hole (5) is formed in the middle of the fixed seat (4), a fixed groove (6) is formed in the top end of the fixed seat (4), the bottom end of the tail gas treatment system (2) is located in the fixed groove (6), clamping grooves (8) are formed in the bottom ends of the two sides of the tail gas treatment system (2), mounting grooves (9) are formed in the inner portions of the two ends of the fixed seat (4), an inserting rod (10) is arranged in the mounting groove (9), one end of the inserting rod (10) penetrates through the fixed seat (4) and is fixedly connected with a handle (11), the other end of the inserting rod (10) penetrates through the fixed seat (4) and is located in the fixed groove (6), a return spring (13) is sleeved on the outer side of the inserting rod (10), and, the other end fixedly connected with stopper (12) of return spring (13), stopper (12) and inserted bar (10) fixed connection.
6. The process for producing a porous block according to claim 5, wherein:
the limiting block (12) is connected with the mounting groove (9) in a sliding mode, and the inserting rod (10) is matched with the clamping groove (8).
7. The process for producing a porous block according to claim 5, wherein:
the diameter of fixed slot (6) is greater than intercommunicating pore (5), intercommunicating pore (5) is linked together with tail gas processing system (2), tail gas processing system (2) and fixed slot (6) looks adaptation, the bottom fixedly connected with of fixed slot (6) seals up (7), sealed pad (7) are connected with tail gas processing system (2) laminating.
8. The process for producing a porous block according to claim 7, wherein:
the top fixedly connected with conduction pipe (3) of tail gas processing system (2), the top fixedly connected with flange of conduction pipe (3), conduction pipe (3) are used for connecting the outside pipeline.
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