CN112979275A - Method for preparing adsorption type perforated brick from sludge with high organic matter content - Google Patents

Method for preparing adsorption type perforated brick from sludge with high organic matter content Download PDF

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CN112979275A
CN112979275A CN202110160153.2A CN202110160153A CN112979275A CN 112979275 A CN112979275 A CN 112979275A CN 202110160153 A CN202110160153 A CN 202110160153A CN 112979275 A CN112979275 A CN 112979275A
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sludge
brick
adsorption type
green bricks
green
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CN112979275B (en
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杨健
彭涛
李钦韬
施斌
何剑奇
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CREEC Chengdu Survey Design and Research Co Ltd
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CREEC Chengdu Survey Design and Research Co Ltd
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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
    • C04B38/0665—Waste material; Refuse other than vegetable refuse
    • 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
    • C04B33/131—Inorganic additives
    • 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
    • C04B33/1321—Waste slurries, e.g. harbour sludge, industrial muds
    • 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
    • C04B33/135—Combustion residues, e.g. fly ash, incineration waste
    • 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
    • C04B33/135—Combustion residues, e.g. fly ash, incineration waste
    • C04B33/1352—Fuel ashes, e.g. fly ash
    • 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
    • C04B33/138—Waste materials; Refuse; Residues from metallurgical processes, e.g. slag, furnace dust, galvanic waste
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/74—Physical characteristics
    • C04B2235/77—Density
    • 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
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
    • C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
    • 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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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Inorganic Chemistry (AREA)
  • Treatment Of Sludge (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

The invention belongs to the technical field of sludge treatment, discloses a method for preparing an adsorption type porous brick by sludge with high organic matter content, and aims to solve the problems of poor forming, and weak compressive strength and shear strength of a porous brick prepared by sludge with high organic matter content. The invention aims at the composition characteristics of dredged sediment, black and odorous river sludge, sludge of sewage treatment plants, activated sludge and municipal sludge, combines sludge carbonization and porous brick preparation technologies, and can realize the comprehensive utilization of characteristic components of sludge with high organic matter content. The prepared adsorption type porous brick has the characteristics of good molding, high compressive strength and high shear strength, and also has the advantages of low density, low heat conductivity coefficient, strong sound insulation capability, good adsorption effect on gas and liquid pollutants and the like.

Description

Method for preparing adsorption type perforated brick from sludge with high organic matter content
Technical Field
The invention belongs to the technical field of sludge treatment, and particularly relates to a method for preparing an adsorption type perforated brick from sludge with high organic matter content.
Background
With the rapid development of economy, the comprehensive treatment of water pollution is urgent. According to the data of the national statistical bureau, the total amount of national wastewater discharge reaches 695.4 hundred million tons in 2015, wherein the discharge amount of industrial wastewater is 209.8 hundred million tons, and the discharge amount of urban domestic sewage is 485.1 hundred million tons. Sludge from sewage treatment plants, activated sludge, and municipal sludge are by-products of sewage treatment, and their production amounts are increasing. The yield of the domestic sludge exceeds 3500 million tons in 2015. The estimated 2020 year is that the municipal sludge yield of China will reach 6000-9000 ten thousand tons. Large amounts of sludge from sewage treatment plants, activated sludge and municipal sludge seriously damage regional water ecological environment and soil safety environment, and need green high-value treatment.
The prior art also has many technical documents relating to sludge treatment, and for example, patent application No. 201510303216.X discloses a continuous sludge thermal decomposition method and apparatus, the method includes drying carbonization: drying and carbonizing sludge to be treated under negative pressure; heat exchange recovery: the high-temperature water vapor generated in the sludge drying process is subjected to heat exchange condensation treatment, heat is recovered and used in the drying process, and the condensed water is subjected to carbon adsorption filtration generated by carbonization and then is recovered and recycled. The continuous sludge decomposition method of the invention fully utilizes the heat and products generated in the sludge drying and carbonizing process, recycles the heat to the sludge drying and carbonizing process, establishes a self-sufficient heat energy supply system, does not need to consume extra energy, and has obvious energy-saving and environment-friendly effects.
The patent with the application number of 201610266851 discloses a commercialized treatment method and a system for biological sludge and a rotary sludge carbonizing machine, wherein the method comprises the steps of firstly carrying out drying treatment on the biological sludge, then carrying out carbonization treatment on dried sludge with the water content of 7-10%, and carrying out high-temperature cracking on the dried sludge to generate biochar, pyroligneous liquor and biological tar which are packaged and sold; the methane gas generated in the treatment process is recycled for carbonization treatment of the dried sludge.
The patent with the application number of 201610363037. X discloses sludge biochar for repairing heavy metal contaminated soil and a preparation method thereof. The sludge biochar repairing agent comprises concentrated sludge and palygorskite, the sludge and the palygorskite are mixed after biological and physical drying, and the mixture is introduced into an atmosphere furnace for pyrolysis at a proper temperature to obtain a final black product which is sludge-based biochar. According to the invention, municipal sludge is subjected to reduction and harmless treatment, and the prepared sludge-based biochar is added to the heavy metal polluted soil to effectively solidify the heavy metal pollutants, so that the remediation effect is lasting and stable, no secondary pollution is caused, and the soil heavy metal pollution remediation agent is an ideal low-cost soil heavy metal pollution remediation agent.
The patent application No. 201310664733.0 discloses a method for preparing biochar with high nitrogen and phosphorus adsorption performance. The invention takes agricultural and forestry waste as raw materials, utilizes the catalytic performance of light rare earth elements, and prepares the biochar with high nitrogen and phosphorus adsorption performance through high-temperature oxygen-deficient pyrolysis, and the prepared biochar has high nitrogen and phosphorus adsorption rate and large adsorption capacity.
The patent with the application number of 201610311361.7 discloses a method and a device for preparing ceramsite by sludge pyrolytic biochar. The ceramsite is prepared by utilizing the sludge pyrolytic biochar, so that the large-scale utilization of the sludge pyrolytic biochar is realized, the heavy metal elements in the sludge pyrolytic biochar are further efficiently solidified and passivated, the potential heavy metal accumulated pollution of the sludge pyrolytic biochar in the land utilization process is avoided, and the ceramsite is particularly suitable for the resource utilization of the sludge pyrolytic biochar with the heavy metal content exceeding the standard.
The patent with the application number of 201310032970.5 discloses a sludge baking-free brick and a preparation method thereof, wherein the sludge baking-free brick comprises the following components in percentage by mass: 25-40% of dredged sludge (water-removed), 30-45% of fly ash, 16-26% of quick lime, 4-8% of gypsum, 0.3-0.5% of gelling agent, 0.2-0.4% of accelerant, 0.1-0.15% of sodium silicate and 0-0.25% of antifreezing agent. The invention can realize industrialized production, and the product can replace clay baked bricks.
The patent with application number 201410415220.0 discloses a baking-free brick taking river and lake dredging bottom mud as a main material and a natural curing manufacturing method thereof, wherein the dredging bottom mud comprises 50-70% of the main material, 10-20% of cement, 12.5-30% of sand, 1.5-5% of fly ash, 2-3% of quicklime, 0.1-0.25% of sodium silicate and 0.25-0.4% of an antifreezing agent. The natural curing method of the baking-free brick taking the river and lake dredging bottom mud as the main material comprises the working procedures of dredging bottom mud dehydration, mixing, wheel grinding, brick body making and natural curing. The invention has the advantages of simple process, convenient operation, changing waste into valuable, good brick quality, low cost, obvious benefit, environmental protection and the like.
The patent with the application number of 201610110589.X discloses a novel porous brick and a preparation method thereof, wherein the raw materials (calculated by weight parts) comprise 20 parts of ceramsite, 10 parts of ceramic sand, 40 parts of regenerated fine aggregate, 20 parts of fly ash, 5 parts of montmorillonite, 8 parts of plant straw powder, 2 parts of lignocellulose, 1 part of coal gangue, 0.1 part of water reducing agent and 0.2 part of foaming agent, the regenerated fine aggregate is directly obtained by crushing and filtering waste concrete, and the particles of the regenerated fine aggregate are less than 5 mm. The masonry of the porous brick has the advantages of high strength, good ductility, strong shock resistance and the like.
Therefore, the sludge treatment industry has emerged various preparation technologies of biochar, activated carbon, porous bricks and baking-free bricks, and provides various technical approaches for harmless treatment and resource utilization of sludge.
However, the dredged sediment, the black and odorous river sludge, the sludge of a sewage treatment plant, the activated sludge and the municipal sludge have high organic matter and inorganic matter contents, and the biochar and the activated carbon prepared by direct carbonization have high ash content. The prepared charcoal has lower heat value, and the adsorption efficiency and saturated adsorption capacity of the activated carbon are lower.
Due to the high organic matter content, the sludge perforated brick and the baking-free brick have poor formability and weak compressive strength and shear strength.
Disclosure of Invention
The invention provides a method for preparing an adsorption type porous brick by utilizing sludge with high organic matter content, aiming at solving the problems of poor forming, and weak compressive strength and shear strength of a porous brick prepared by sludge with high organic matter content.
In order to solve the technical problem, the technical scheme adopted by the invention is as follows:
the method for preparing the adsorption type perforated brick by using the sludge with high organic content is characterized by comprising the following steps of:
(1) uniformly mixing the ingredients: uniformly mixing the mixture to obtain a material with the water content of 30-55 wt.%, wherein the mixture comprises the following components in percentage by weight:
30-90 wt.% of high organic content sludge;
additive 5wt.% to 30 wt.%;
5-40 wt.% of a modifying agent;
(2) molding: extruding or compression molding the materials to obtain wet green bricks;
(3) naturally drying: naturally drying the wet green bricks to obtain raw green bricks with the water content of 1-15 wt.%;
(4) heat drying: sending the green brick into a drying kiln for drying, and preheating the temperature of the green brick to 100-150 ℃ to obtain a hot green brick;
(5) carbonizing: sending the hot green bricks into a carbonization furnace, introducing protective gas to isolate oxygen, heating to 300-600 ℃, preserving heat and carbonizing for 20-120 min to obtain carbonized porous green bricks;
(6) activating and sintering: heating the carbonized porous green brick to 600-1000 ℃ in an oxygen-isolated manner, introducing activated gas, and preserving the temperature for 30-60 min to finish the sintering of the carbonized porous green brick and the activation of the interstitial biochar;
(7) and (4) isolating oxygen from the green brick subjected to the activation sintering in the step (6) and cooling to room temperature to obtain the adsorption type porous brick.
In some embodiments, the organic content in the mix is 25wt.% to 50 wt.%.
In some embodiments, the high organic content sludge is one or a combination of dredged sediment, black and odorous river sludge, sewage treatment plant sludge, activated sludge, municipal sludge; the additive is one or a combination of more of fly ash, waste incineration ash, blast furnace slag, steel slag, river sand, waste glass and quartz sand; the material is one or a combination of more of limestone, soda ash, fluorite and cement.
In some embodiments, the pores in the adsorption type porous brick obtained in step (7) are formed by carbonizing and shrinking organic matters, and activated carbon is attached to the surfaces of the pores; the obtained adsorption type porous brick has a density of 300kg/m3-500kg/m3The thermal conductivity is 0.04 w/m.k-0.15 w/m.k.
In some examples, the wall body having a thickness of 24cm is prepared from the adsorptive porous brick obtained in the step (7), and the sound insulation amount of the wall body is 60dB to 100 dB.
In some embodiments, the shielding gas recited in step (5) is one of nitrogen, carbon dioxide, or argon.
In some embodiments, the activating gas in step (6) is one or both of water vapor or carbon dioxide.
Compared with the prior art, the invention has the following beneficial effects:
the method for preparing the adsorption type porous brick by using the sludge with the high organic matter content aims at the composition characteristics of dredged sediment, black and odorous river sludge, sludge of a sewage treatment plant, activated sludge and municipal sludge, combines the sludge carbonization and the porous brick preparation technology, and can realize the comprehensive utilization of the characteristic components of the sludge with the high organic matter content. The prepared adsorption type porous brick has the characteristics of good molding, high compressive strength and high shear strength, and also has the advantages of small density, small heat conductivity coefficient, strong sound insulation capability, good adsorption effect of gas and liquid pollutants and the like (activated carbon attached to the surfaces of pores of the porous brick can adsorb formaldehyde, propionaldehyde, heavy metal ions, pesticides and the like). Therefore, the method can treat and utilize high organic matter and inorganic matter sludge such as dredged sediment, black and odorous river sludge, sludge of sewage treatment plants, activated sludge, municipal sludge and the like, and realizes harmless and resource utilization of the sludge.
Detailed Description
The present invention will be further described with reference to the following examples, which are intended to illustrate only some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, other embodiments used by those skilled in the art without any creative effort belong to the protection scope of the present invention.
The method for preparing the adsorption type perforated brick by the sludge with high organic matter content comprises the following steps:
(1) uniformly mixing the ingredients: uniformly mixing the mixture to obtain a material with the water content of 30-55 wt.%, wherein the mixture comprises the following components in percentage by weight:
30-90 wt.% of high organic content sludge;
additive 5wt.% to 30 wt.%;
5-40 wt.% of a modifying agent;
(2) molding: extruding or compression molding the materials to obtain wet green bricks;
(3) naturally drying: naturally drying the wet green bricks to obtain raw green bricks with the water content of 1-15 wt.%;
(4) heat drying: sending the green brick into a drying kiln for drying, and preheating the temperature of the green brick to 100-150 ℃ to obtain a hot green brick; wherein, the flue gas generated in the heat drying process is purified and dedusted to reach the standard and then is discharged;
(5) carbonizing: sending the hot green bricks into a carbonization furnace, introducing protective gas to isolate oxygen, heating to 300-600 ℃, preserving heat and carbonizing for 20-120 min to obtain carbonized porous green bricks; combustible gas generated in the carbonization process can be led into a drying kiln for combustion and heat supply, namely the combustible gas generated in the step (5) is sent into the drying kiln for combustion, so that the utilization rate of energy is improved, and the energy consumption in the whole preparation process is reduced;
(6) activating and sintering: heating the carbonized porous green brick to 600-1000 ℃ in an oxygen-isolated manner, introducing activated gas, and preserving the temperature for 30-60 min to finish the sintering of the carbonized porous green brick and the activation of the interstitial biochar;
(7) and (4) isolating oxygen from the green brick subjected to the activation sintering in the step (6) and cooling to room temperature to obtain the adsorption type porous brick.
In some embodiments, the organic content in the mix is 25wt.% to 50 wt.%.
In some embodiments, the high organic content sludge is one or a combination of dredged sediment, black and odorous river sludge, sewage treatment plant sludge, activated sludge, municipal sludge; the additive is one or a combination of more of fly ash, waste incineration ash, blast furnace slag, steel slag, river sand, waste glass and quartz sand; the material is one or a combination of more of limestone, soda ash, fluorite and cement.
In some embodiments, the pores in the adsorption type porous brick obtained in step (7) are formed by carbonizing and shrinking organic matters, and activated carbon is attached to the surfaces of the pores; the obtained adsorption type porous brick has a density of 300kg/m3-500kg/m3The thermal conductivity is 0.04 w/m.k-0.15 w/m.k.
In some examples, the wall body having a thickness of 24cm is prepared from the adsorptive porous brick obtained in the step (7), and the sound insulation amount of the wall body is 60dB to 100 dB.
In some embodiments, the shielding gas recited in step (5) is one of nitrogen, carbon dioxide, or argon.
In some embodiments, the activating gas in step (6) is one or both of water vapor or carbon dioxide.
Example 1
Mixing and uniformly mixing 30wt.% of dredged sediment with high organic matter content, 30wt.% of fly ash and 40wt.% of limestone to obtain a material (the material is the material after the mixture is uniformly mixed) with the water content of 30wt.%, wherein the organic matter content of the mixture is 25 wt.%; extruding and forming the materials to obtain wet green bricks; sending the wet green bricks into an airing field for natural drying to obtain raw green bricks with the water content of 1 wt.%; sending the green bricks into a drying kiln, drying and preheating to 100 ℃ to obtain hot green bricks, and purifying and dedusting smoke generated by heat drying and then discharging the smoke up to the standard; sending the hot green bricks into a carbonization furnace, introducing nitrogen as protective gas to isolate oxygen, heating to 300 ℃, preserving heat and carbonizing for 120min to obtain carbonized porous green bricks, and introducing combustible gas generated by carbonization into a drying kiln for combustion and heat supply; heating the carbonized porous green bricks to 600 ℃ in an oxygen-isolated manner, introducing water vapor as activating gas, and preserving heat for 60min to finish the sintering of the carbonized porous green bricks and the activation of the interstitial biochar; and (3) isolating oxygen from the activated and sintered brick blank and cooling to room temperature to obtain the adsorption type porous brick.
The pores of the prepared adsorption type porous brick are formed by carbonizing and shrinking organic matters, and activated carbon is attached to the surfaces of the pores. The density of the prepared adsorption type porous brick is 300kg/m3The heat conductivity coefficient is 0.04 w/m.k, the sound insulation capacity of the adsorption type porous brick wall body with the thickness of 24cm is 60dB, and the adsorption type porous brick wall body has the adsorption capacity of formaldehyde, propionaldehyde, heavy metal ions and pesticides.
Example 2
Mixing and uniformly mixing 40wt.% of black and odorous river sludge with high organic matter content, 25wt.% of waste incineration ash and 35wt.% of soda ash to obtain a material with the water content of 35wt.%, wherein the organic matter content in the mixture is 30 wt.%; compression molding the materials to obtain wet green bricks; sending the wet green bricks into an airing field for natural drying to obtain raw green bricks with the water content of 3 wt.%; sending the green bricks into a drying kiln, drying and preheating to 110 ℃ to obtain hot green bricks, and purifying and dedusting smoke generated by heat drying and then discharging the smoke up to the standard; sending the hot green bricks into a carbonization furnace, introducing carbon dioxide as protective gas to isolate oxygen, heating to 350 ℃, preserving heat and carbonizing for 110min to obtain carbonized porous green bricks, and introducing combustible gas generated by carbonization into a drying kiln for combustion and heat supply; heating the carbonized porous green brick to 650 ℃ in the absence of oxygen, introducing carbon dioxide as activating gas, and keeping the temperature for 55min to complete the sintering of the carbonized porous green brick and the activation of the interstitial biochar; and (3) isolating oxygen from the activated and sintered brick blank and cooling to room temperature to obtain the adsorption type porous brick.
The pores of the prepared adsorption type porous brick are formed by carbonizing and shrinking organic matters, and activated carbon is attached to the surfaces of the pores. The density of the prepared adsorption type porous brick is 330kg/m3The heat conductivity coefficient is 0.05 w/m.k, the sound insulation capacity of the adsorption type porous brick wall body with the thickness of 24cm is 65dB, and the adsorption type porous brick wall body has the adsorption capacity of formaldehyde, propionaldehyde, heavy metal ions and pesticides.
Example 3
Uniformly mixing 50wt.% of sludge of a sewage treatment plant with high organic matter content, 20wt.% of blast furnace slag and 30wt.% of fluorite to obtain a material with water content of 40wt.%, wherein the organic matter content in the mixture is 35 wt.%; extruding and molding the material to obtain a wet green brick; sending the wet green bricks into an airing field for natural drying to obtain raw green bricks with the water content of 5 wt.%; sending the green bricks into a drying kiln, drying and preheating to 120 ℃ to obtain hot green bricks, and purifying and dedusting smoke generated by heat drying and then discharging the smoke up to the standard; sending the hot green bricks into a carbonization furnace, introducing argon as protective gas to isolate oxygen, heating to 400 ℃, preserving heat and carbonizing for 100min to obtain carbonized porous green bricks, and introducing combustible gas generated by carbonization into a drying kiln for combustion and heat supply; heating the carbonized porous green brick to 700 ℃ in an oxygen-isolated manner, introducing water vapor and carbon dioxide as activating gas, and preserving heat for 50min to finish the sintering of the carbonized porous green brick and the activation of the interstitial biochar; and (3) isolating oxygen from the activated and sintered brick blank and cooling to room temperature to obtain the adsorption type porous brick.
The pores of the prepared adsorption type porous brick are formed by carbonizing and shrinking organic matters, and activated carbon is attached to the surfaces of the pores. The density of the prepared adsorption type porous brick is 350kg/m3The heat conductivity coefficient is 0.06 w/m.k, the sound insulation capacity of the adsorption type porous brick wall body with the thickness of 24cm is 70dB, and the adsorption type porous brick wall body has the adsorption capacity of formaldehyde, propionaldehyde, heavy metal ions and pesticides.
Example 4
Mixing 60wt.% of activated sludge with high organic matter content, 15wt.% of steel slag and 25wt.% of cement uniformly to obtain a material with water content of 45wt.%, wherein the organic matter content in the mixture is 40 wt.%; compression molding the materials to obtain wet green bricks; sending the wet green bricks into an airing field for natural drying to obtain raw green bricks with the water content of 7 wt.%; sending the green bricks into a drying kiln, drying and preheating to 130 ℃ to obtain hot green bricks, and purifying and dedusting smoke generated by heat drying and then discharging the smoke up to the standard; sending the hot green bricks into a carbonization furnace, introducing nitrogen as protective gas to isolate oxygen, heating to 450 ℃, preserving heat and carbonizing for 90min to obtain carbonized porous green bricks, and introducing combustible gas generated by carbonization into a drying kiln for combustion and heat supply; heating the carbonized porous green bricks to 750 ℃ in an oxygen-isolated manner, introducing water vapor as activating gas, and preserving heat for 45min to finish the sintering of the carbonized porous green bricks and the activation of the interstitial biochar; and (3) isolating oxygen from the activated and sintered brick blank and cooling to room temperature to obtain the adsorption type porous brick.
The pores of the prepared adsorption type porous brick are formed by carbonizing and shrinking organic matters, and activated carbon is attached to the surfaces of the pores. The density of the prepared adsorption type porous brick is 370kg/m3The heat conductivity coefficient is 0.07 w/m.k, the sound insulation capacity of the adsorption type porous brick wall body with the thickness of 24cm is 75dB, and the adsorption type porous brick wall body has the adsorption capacity of formaldehyde, propionaldehyde, heavy metal ions and pesticides.
Example 5
Preparing and uniformly mixing 70wt.% of municipal sludge with high organic matter content, 10wt.% of river sand, 20wt.% of limestone and soda ash to obtain a material with water content of 50wt.%, wherein the organic matter content in the mixture is 45 wt.%; compression molding the materials to obtain wet green bricks; sending the wet green bricks into an airing field for natural drying to obtain raw green bricks with the water content of 9 wt.%; sending the green bricks into a drying kiln, drying and preheating to 140 ℃ to obtain hot green bricks, and purifying and dedusting smoke generated by heat drying and then discharging the smoke up to the standard; sending the hot green bricks into a carbonization furnace, introducing carbon dioxide as protective gas to isolate oxygen, heating to 500 ℃, preserving heat and carbonizing for 80min to obtain carbonized porous green bricks, and introducing combustible gas generated by carbonization into a drying kiln for combustion and heat supply; heating the carbonized porous green brick to 850 ℃ in the absence of oxygen, introducing steam and carbon dioxide as activating gas, and keeping the temperature for 40min to complete the sintering of the carbonized porous green brick and the activation of the interstitial biochar; and (3) isolating oxygen from the activated and sintered brick blank and cooling to room temperature to obtain the adsorption type porous brick.
The pores of the prepared adsorption type porous brick are formed by carbonizing and shrinking organic matters, and activated carbon is attached to the surfaces of the pores. The density of the prepared adsorption type porous brick is 390kg/m3The heat conductivity coefficient is 0.08 w/m.k, the sound insulation capacity of the adsorption type porous brick wall body with the thickness of 24cm is 80dB, and the adsorption type porous brick wall body has the adsorption capacity of formaldehyde, propionaldehyde, heavy metal ions and pesticides.
Example 6
Mixing and uniformly mixing 80wt.% of high organic matter content dredged sediment and black and odorous river sludge, 5wt.% of waste glass, 15wt.% of limestone and cement to obtain a material with the water content of 55wt.%, wherein the organic matter content in the mixture is 50 wt.%; extruding and forming the materials to obtain wet green bricks; sending the wet green bricks into an airing field for natural drying to obtain raw green bricks with the water content of 10 wt.%; sending the green bricks into a drying kiln, drying and preheating to 150 ℃ to obtain hot green bricks, and purifying and dedusting smoke generated by heat drying and then discharging the smoke up to the standard; sending the hot green bricks into a carbonization furnace, introducing nitrogen as protective gas to isolate oxygen, heating to 550 ℃, preserving heat and carbonizing for 70min to obtain carbonized porous green bricks, and introducing combustible gas generated by carbonization into a drying kiln for combustion and heat supply; heating the carbonized porous green brick to 800 ℃ in an oxygen-isolated manner, introducing steam and carbon dioxide as activating gas, and preserving heat for 35min to finish the sintering of the carbonized porous green brick and the activation of the interstitial biochar; and (3) isolating oxygen from the activated and sintered brick blank and cooling to room temperature to obtain the adsorption type porous brick.
The pores of the prepared adsorption type porous brick are formed by carbonizing and shrinking organic matters, and activated carbon is attached to the surfaces of the pores. The density of the prepared adsorption type porous brick is 400kg/m3The heat conductivity coefficient is 0.09 w/m.k, the sound insulation capacity of the adsorption type porous brick wall body with the thickness of 24cm is 85dB, and the adsorption type porous brick wall body has the adsorption capacity of formaldehyde, propionaldehyde, heavy metal ions and pesticides.
Example 7
Mixing and uniformly mixing 90wt.% of high organic matter content dredged sediment and sludge of a sewage treatment plant, 5wt.% of quartz sand, 5wt.% of limestone and fluorite to obtain a material with the water content of 45wt.%, wherein the organic matter content in the mixture is 30 wt.%; compression molding the materials to obtain wet green bricks; sending the wet green bricks into an airing field for natural drying to obtain raw green bricks with the water content of 11 wt.%; sending the green bricks into a drying kiln, drying and preheating to 120 ℃ to obtain hot green bricks, and purifying and dedusting smoke generated by heat drying and then discharging the smoke up to the standard; sending the hot green bricks into a carbonization furnace, introducing nitrogen as protective gas to isolate oxygen, heating to 600 ℃, preserving heat and carbonizing for 60min to obtain carbonized porous green bricks, and introducing combustible gas generated by carbonization into a drying kiln for combustion and heat supply; heating the carbonized porous green brick to 900 ℃ in an oxygen-isolated manner, introducing steam and carbon dioxide as activating gas, and preserving heat for 30min to finish the sintering of the carbonized porous green brick and the activation of the interstitial biochar; and (3) isolating oxygen from the activated and sintered brick blank and cooling to room temperature to obtain the adsorption type porous brick.
The pores of the prepared adsorption type porous brick are formed by carbonizing and shrinking organic matters, and activated carbon is attached to the surfaces of the pores. The density of the prepared adsorption type porous brick is 420kg/m3The heat conductivity coefficient is 0.10 w/m.k, the sound insulation capacity of the adsorption type porous brick wall body with the thickness of 24cm is 90dB, and the adsorption type porous brick wall body has the adsorption capacity of formaldehyde, propionaldehyde, heavy metal ions and pesticides.
Example 8
Mixing and uniformly mixing 80wt.% of black and odorous river sludge and activated sludge with high organic matter content, 10wt.% of fly ash and waste incineration ash, 10wt.% of soda ash and cement to obtain a material with water content of 45wt.%, wherein the organic matter content in the mixture is 35 wt.%; compression molding the materials to obtain wet green bricks; sending the wet green bricks into an airing field for natural drying to obtain raw green bricks with the water content of 13 wt.%; sending the green bricks into a drying kiln, drying and preheating to 120 ℃ to obtain hot green bricks, and purifying and dedusting smoke generated by heat drying and then discharging the smoke up to the standard; sending the hot green bricks into a carbonization furnace, introducing nitrogen as protective gas to isolate oxygen, heating to 550 ℃, preserving heat and carbonizing for 50min to obtain carbonized porous green bricks, and introducing combustible gas generated by carbonization into a drying kiln for combustion and heat supply; heating the carbonized porous green brick to 950 ℃ in an oxygen-isolated manner, introducing water vapor and carbon dioxide as activating gas, and preserving heat for 40min to finish the sintering of the carbonized porous green brick and the activation of the void biochar; and (3) isolating oxygen from the activated and sintered brick blank and cooling to room temperature to obtain the adsorption type porous brick.
The pores of the prepared adsorption type porous brick are formed by carbonizing and shrinking organic matters, and activated carbon is attached to the surfaces of the pores. The density of the prepared adsorption type porous brick is 440kg/m3The heat conductivity coefficient is 0.11 w/m.k, the sound insulation capacity of the adsorption type porous brick wall body with the thickness of 24cm is 95dB, and the adsorption type porous brick wall body has the adsorption capacity of formaldehyde, propionaldehyde, heavy metal ions and pesticides.
Example 9
Mixing and uniformly mixing 70wt.% of black and odorous river sludge and sewage treatment plant sludge with high organic matter content, 20wt.% of blast furnace slag and river sand with total content, 10wt.% of soda ash and fluorite to obtain a material with water content of 35wt.%, wherein the organic matter content in the mixture is 40 wt.%; extruding and forming the materials to obtain wet green bricks; sending the wet green bricks into an airing field for natural drying to obtain green bricks with the water content of 15 wt.%; sending the green bricks into a drying kiln, drying and preheating to 120 ℃ to obtain hot green bricks, and purifying and dedusting smoke generated by heat drying and then discharging the smoke up to the standard; sending the hot green bricks into a carbonization furnace, introducing nitrogen as protective gas to isolate oxygen, heating to 500 ℃, preserving heat and carbonizing for 40min to obtain carbonized porous green bricks, and introducing combustible gas generated by carbonization into a drying kiln for combustion and heat supply; heating the carbonized porous green brick to 1000 ℃ in an oxygen-isolated manner, introducing water vapor and carbon dioxide as activating gas, and preserving heat for 50min to finish the sintering of the carbonized porous green brick and the activation of the interstitial biochar; and (3) isolating oxygen from the activated and sintered brick blank and cooling to room temperature to obtain the adsorption type porous brick.
The pores of the prepared adsorption type porous brick are formed by carbonizing and shrinking organic matters, and activated carbon is attached to the surfaces of the pores. The density of the prepared adsorption type porous brick is 460kg/m3The heat conductivity coefficient is 0.12 w/m.k, the sound insulation capacity of the adsorption type porous brick wall body with the thickness of 24cm is 100dB, and the adsorption type porous brick wall body has the adsorption capacity of formaldehyde, propionaldehyde, heavy metal ions and pesticides.
Example 10
Mixing and uniformly mixing 60wt.% of high organic matter content dredged sediment and municipal sludge, 20wt.% of fly ash and quartz sand, and 20wt.% of limestone and fluorite to obtain a material with the water content of 45wt.%, wherein the organic matter content in the mixture is 30 wt.%; extruding and forming the mixture to obtain a wet green brick; sending the wet green bricks into an airing field for natural drying to obtain raw green bricks with the water content of 10 wt.%; sending the green bricks into a drying kiln, drying and preheating to 120 ℃ to obtain hot green bricks, and purifying and dedusting smoke generated by heat drying and then discharging the smoke up to the standard; sending the hot green bricks into a carbonization furnace, introducing nitrogen as protective gas to isolate oxygen, heating to 450 ℃, preserving heat and carbonizing for 30min to obtain carbonized porous green bricks, and introducing combustible gas generated by carbonization into a drying kiln for combustion and heat supply; heating the carbonized porous green brick to 800 ℃ in the absence of oxygen, introducing steam and carbon dioxide as activating gas, and keeping the temperature for 30min to complete the sintering of the carbonized porous green brick and the activation of the interstitial biochar; and (3) isolating oxygen from the activated and sintered brick blank and cooling to room temperature to obtain the adsorption type porous brick.
The pores of the prepared adsorption type porous brick are formed by carbonizing and shrinking organic matters, and activated carbon is attached to the surfaces of the pores. The density of the prepared adsorption type porous brick is 480kg/m3The heat conductivity coefficient is 0.13 w/m.k, the sound insulation capacity of the adsorption type porous brick wall body with the thickness of 24cm is 80dB, and the adsorption type porous brick wall body has the adsorption capacity of formaldehyde, propionaldehyde, heavy metal ions and pesticides.
Example 11
Mixing and uniformly mixing 50wt.% of high organic matter content activated sludge and municipal sludge, 35wt.% of fly ash and steel slag, and 15wt.% of fluorite and cement to obtain a mixture with the water content of 40wt.%, wherein the organic matter content of the mixture is 30 wt.%; extruding and forming the mixture to obtain a wet green brick; sending the wet green bricks into an airing field for natural drying to obtain raw green bricks with the water content of 12 wt.%; sending the green bricks into a drying kiln, drying and preheating to 120 ℃ to obtain hot green bricks, and purifying and dedusting smoke generated by heat drying and then discharging the smoke up to the standard; sending the hot green bricks into a carbonization furnace, introducing nitrogen as protective gas to isolate oxygen, heating to 500 ℃, preserving heat and carbonizing for 20min to obtain carbonized porous green bricks, and introducing combustible gas generated by carbonization into a drying kiln for combustion and heat supply; heating the carbonized porous green brick to 700 ℃ in an oxygen-isolated manner, introducing steam and carbon dioxide as activating gas, and preserving heat for 40min to finish the sintering of the carbonized porous green brick and the activation of the interstitial biochar; and (3) isolating oxygen from the activated and sintered brick blank and cooling to room temperature to obtain the adsorption type porous brick.
The pores of the prepared adsorption type porous brick are formed by carbonizing and shrinking organic matters, and activated carbon is attached to the surfaces of the pores. The density of the prepared adsorption type porous brick is 500kg/m3The heat conductivity coefficient is 0.14 w/m.k, the sound insulation capacity of the adsorption type porous brick wall body with the thickness of 24cm is 70dB, and the adsorption type porous brick wall body has the adsorption capacity of formaldehyde, propionaldehyde, heavy metal ions and pesticides.
Example 12
Mixing and uniformly mixing 55wt.% of black and odorous river sludge and activated sludge with high organic matter content, 25wt.% of steel slag and river sand, and 20wt.% of limestone and soda ash to obtain a mixture with the water content of 35wt.%, wherein the organic matter content of the mixture is 30 wt.%; compression molding the mixture to obtain a wet green brick; sending the wet green bricks into an airing field for natural drying to obtain raw green bricks with the water content of 12 wt.%; sending the green bricks into a drying kiln, drying and preheating to 120 ℃ to obtain hot green bricks, and purifying and dedusting smoke generated by heat drying and then discharging the smoke up to the standard; sending the hot green bricks into a carbonization furnace, introducing nitrogen as protective gas to isolate oxygen, heating to 450 ℃, preserving heat and carbonizing for 60min to obtain carbonized porous green bricks, and introducing combustible gas generated by carbonization into a drying kiln for combustion and heat supply; heating the carbonized porous green brick to 750 ℃ in an oxygen-isolated manner, introducing water vapor and carbon dioxide as activating gas, and preserving heat for 40min to finish the sintering of the carbonized porous green brick and the activation of the void biochar; and (3) isolating oxygen from the activated and sintered brick blank and cooling to room temperature to obtain the adsorption type porous brick.
The pores of the prepared adsorption type porous brick are formed by carbonizing and shrinking organic matters, and activated carbon is attached to the surfaces of the pores. The density of the prepared adsorption type porous brick is 400kg/m3The heat conductivity coefficient is 0.15 w/m.k, the sound insulation capacity of the adsorption type porous brick wall body with the thickness of 24cm is 70dB, and the adsorption type porous brick wall body has the adsorption capacity of formaldehyde, propionaldehyde, heavy metal ions and pesticides.
Example 13
Mixing 65wt.% of high organic matter content dredged sediment, black and odorous river sludge and sludge of a sewage treatment plant, 25wt.% of fly ash, blast furnace slag and quartz sand, 10wt.% of limestone, fluorite and cement, and uniformly mixing to obtain a mixture with the water content of 35wt.%, wherein the organic matter content of the mixture is 25 wt.%; compression molding the mixture to obtain a wet green brick; sending the wet green bricks into an airing field for natural drying to obtain raw green bricks with the water content of 1 wt.%; sending the green bricks into a drying kiln, drying and preheating to 120 ℃ to obtain hot green bricks, and purifying and dedusting smoke generated by heat drying and then discharging the smoke up to the standard; sending the hot green bricks into a carbonization furnace, introducing nitrogen as protective gas to isolate oxygen, heating to 500 ℃, preserving heat and carbonizing for 70min to obtain carbonized porous green bricks, and introducing combustible gas generated by carbonization into a drying kiln for combustion and heat supply; heating the carbonized porous green brick to 900 ℃ in an oxygen-isolated manner, introducing water vapor and carbon dioxide as activating gas, and preserving heat for 50min to finish the sintering of the carbonized porous green brick and the activation of the interstitial biochar; and (3) isolating oxygen from the activated and sintered brick blank and cooling to room temperature to obtain the adsorption type porous brick.
The pores of the prepared adsorption type porous brick are formed by carbonizing and shrinking organic matters, and activated carbon is attached to the surfaces of the pores. The density of the prepared adsorption type porous brick is 400kg/m3The heat conductivity coefficient is 0.06 w/m.k, the sound insulation capacity of the adsorption type porous brick wall body with the thickness of 24cm is 70dB, and the adsorption type porous brick wall body has the adsorption capacity of formaldehyde, propionaldehyde, heavy metal ions and pesticides.
Example 14
Mixing and uniformly mixing 75wt.% of high organic matter content dredged sediment, black and odorous river sludge, activated sludge and municipal sludge, 15wt.% of fly ash, blast furnace slag, steel slag and river sand, and 10wt.% of limestone, soda ash, fluorite and cement to obtain a mixture with the water content of 55wt.%, wherein the organic matter content of the mixture is 40 wt.%; extruding and forming the mixture to obtain a wet green brick; sending the wet green bricks into an airing field for natural drying to obtain raw green bricks with the water content of 7 wt.%; sending the green bricks into a drying kiln, drying and preheating to 140 ℃ to obtain hot green bricks, and purifying and dedusting smoke generated by heat drying and then discharging the smoke up to the standard; sending the hot green bricks into a carbonization furnace, introducing nitrogen as protective gas to isolate oxygen, heating to 500 ℃, preserving heat and carbonizing for 90min to obtain carbonized porous green bricks, and introducing combustible gas generated by carbonization into a drying kiln for combustion and heat supply; heating the carbonized porous green brick to 600 ℃ in an oxygen-isolated manner, introducing steam and carbon dioxide as activating gas, and preserving heat for 40min to finish the sintering of the carbonized porous green brick and the activation of the interstitial biochar; and (3) isolating oxygen from the activated and sintered brick blank and cooling to room temperature to obtain the adsorption type porous brick.
The pores of the prepared adsorption type porous brick are formed by carbonizing and shrinking organic matters, and activated carbon is attached to the surfaces of the pores. The density of the prepared adsorption type porous brick is 350kg/m3The heat conductivity coefficient is 0.04 w/m.k, the sound insulation capacity of the adsorption type porous brick wall body with the thickness of 24cm is 90dB, and the adsorption type porous brick wall body has the functions of adsorbing formaldehyde, propionaldehyde, heavy metal ions and pesticidesCapability.
Example 15
Mixing and uniformly mixing 80wt.% of high organic matter content dredged sediment, black and odorous river sludge, sludge of a sewage treatment plant, activated sludge and municipal sludge, 10wt.% of fly ash, waste incineration ash, steel slag, waste glass and quartz sand, and 10wt.% of limestone, soda ash and cement to obtain a mixture with the water content of 45wt.%, wherein the organic matter content of the mixture is 25 wt.%; compression molding the mixture to obtain a wet green brick; sending the wet green bricks into an airing field for natural drying to obtain green bricks with the water content of 6 wt.%; sending the green bricks into a drying kiln, drying and preheating to 130 ℃ to obtain hot green bricks, and purifying and dedusting smoke generated by heat drying and then discharging the smoke up to the standard; sending the hot green bricks into a carbonization furnace, introducing nitrogen as protective gas to isolate oxygen, heating to 400 ℃, preserving heat and carbonizing for 70min to obtain carbonized porous green bricks, and introducing combustible gas generated by carbonization into a drying kiln for combustion and heat supply; heating the carbonized porous green bricks to 700 ℃ in an oxygen-isolated manner, introducing water vapor as activating gas, and preserving heat for 50min to finish the sintering of the carbonized porous green bricks and the activation of the interstitial biochar; and (3) isolating oxygen from the activated and sintered brick blank and cooling to room temperature to obtain the adsorption type porous brick.
The pores of the prepared adsorption type porous brick are formed by carbonizing and shrinking organic matters, and activated carbon is attached to the surfaces of the pores. The density of the prepared adsorption type porous brick is 370kg/m3The heat conductivity coefficient is 0.05 w/m.k, the sound insulation capacity of the adsorption type porous brick wall body with the thickness of 24cm is 100dB, and the adsorption type porous brick wall body has the adsorption capacity of formaldehyde, propionaldehyde, heavy metal ions and pesticides.
Example 16
Mixing and uniformly mixing 80wt.% of high organic matter content dredged sediment, black and odorous river sludge, sludge of a sewage treatment plant, activated sludge and municipal sludge, 15wt.% of fly ash, waste incineration ash, blast furnace slag, steel slag, river sand, waste glass and quartz sand, and 5wt.% of limestone, soda ash, fluorite and cement to obtain a mixture with the water content of 45wt.%, wherein the organic matter content of the mixture is 25 wt.%; extruding and forming the mixture to obtain a wet green brick; sending the wet green bricks into an airing field for natural drying to obtain green bricks with the water content of 6 wt.%; sending the green bricks into a drying kiln, drying and preheating to 110 ℃ to obtain hot green bricks, and purifying and dedusting smoke generated by heat drying and then discharging the smoke up to the standard; sending the hot green bricks into a carbonization furnace, introducing carbon dioxide as protective gas to isolate oxygen, heating to 500 ℃, preserving heat and carbonizing for 40min to obtain carbonized porous green bricks, and introducing combustible gas generated by carbonization into a drying kiln for combustion and heat supply; heating the carbonized porous green brick to 600 ℃ in an oxygen-isolated manner, introducing steam and carbon dioxide as activating gas, and preserving heat for 40min to finish the sintering of the carbonized porous green brick and the activation of the interstitial biochar; and (3) isolating oxygen from the activated and sintered brick blank and cooling to room temperature to obtain the adsorption type porous brick.
The pores of the prepared adsorption type porous brick are formed by carbonizing and shrinking organic matters, and activated carbon is attached to the surfaces of the pores. The density of the prepared adsorption type porous brick is 380kg/m3The heat conductivity coefficient is 0.05 w/m.k, the sound insulation capacity of the adsorption type porous brick wall body with the thickness of 24cm is 90dB, and the adsorption type porous brick wall body has the adsorption capacity of formaldehyde, propionaldehyde, heavy metal ions and pesticides.
Example 17
Mixing and uniformly mixing 70wt.% of black and odorous river sludge with high organic matter content, sludge of a sewage treatment plant, activated sludge and municipal sludge, 20wt.% of fly ash, waste incineration ash, blast furnace slag, steel slag, waste glass and quartz sand, and 10wt.% of limestone, soda ash and cement to obtain a mixture with the water content of 35wt.%, wherein the organic matter content of the mixture is 30 wt.%; compression molding the mixture to obtain a wet green brick; sending the wet green bricks into an airing field for natural drying to obtain raw green bricks with the water content of 12 wt.%; sending the green bricks into a drying kiln, drying and preheating to 140 ℃ to obtain hot green bricks, and purifying and dedusting smoke generated by heat drying and then discharging the smoke up to the standard; sending the hot green bricks into a carbonization furnace, introducing argon as protective gas to isolate oxygen, heating to 460 ℃, preserving heat and carbonizing for 80min to obtain carbonized porous green bricks, and introducing combustible gas generated by carbonization into a drying kiln for combustion and heat supply; heating the carbonized porous green bricks to 800 ℃ in an oxygen-isolated manner, introducing water vapor as activating gas, and keeping the temperature for 50min to finish the sintering of the carbonized porous green bricks and the activation of the interstitial biochar; and (3) isolating oxygen from the activated and sintered brick blank and cooling to room temperature to obtain the adsorption type porous brick.
The pores of the prepared adsorption type porous brick are formed by carbonizing and shrinking organic matters, and activated carbon is attached to the surfaces of the pores. The density of the prepared adsorption type porous brick is 400kg/m3The heat conductivity coefficient is 0.08 w/m.k, the sound insulation capacity of the adsorption type porous brick wall body with the thickness of 24cm is 60dB, and the adsorption type porous brick wall body has the adsorption capacity of formaldehyde, propionaldehyde, heavy metal ions and pesticides.
Example 18
Mixing and uniformly mixing 60wt.% of high organic matter content dredged sediment, black and odorous river sludge, activated sludge and municipal sludge, 25wt.% of fly ash, waste incineration ash, river sand, waste glass and quartz sand, and 15wt.% of limestone, soda ash, fluorite and cement to obtain a mixture with the water content of 45wt.%, wherein the organic matter content of the mixture is 30 wt.%; compression molding the mixture to obtain a wet green brick; sending the wet green bricks into an airing field for natural drying to obtain raw green bricks with the water content of 3 wt.%; sending the green bricks into a drying kiln, drying and preheating to 130 ℃ to obtain hot green bricks, and purifying and dedusting smoke generated by heat drying and then discharging the smoke up to the standard; sending the hot green bricks into a carbonization furnace, introducing nitrogen as protective gas to isolate oxygen, heating to 550 ℃, preserving heat and carbonizing for 90min to obtain carbonized porous green bricks, and introducing combustible gas generated by carbonization into a drying kiln for combustion and heat supply; heating the carbonized porous green brick to 900 ℃ in an oxygen-isolated manner, introducing water vapor and carbon dioxide as activating gas, and preserving heat for 50min to finish the sintering of the carbonized porous green brick and the activation of the interstitial biochar; and (3) isolating oxygen from the activated and sintered brick blank and cooling to room temperature to obtain the adsorption type porous brick.
The pores of the prepared adsorption type porous brick are formed by carbonizing and shrinking organic matters, and activated carbon is attached to the surfaces of the pores. The density of the prepared adsorption type porous brick is 440kg/m3The heat conductivity coefficient is 0.07 w/m.k, the sound insulation capacity of the adsorption type porous brick wall body with the thickness of 24cm is 80dB, and the adsorption type porous brick wall body has the adsorption capacity of formaldehyde, propionaldehyde, heavy metal ions and pesticides.
Example 19
Mixing and uniformly mixing 70wt.% of high organic matter content dredged sediment, sewage treatment plant sludge and municipal sludge, 20wt.% of fly ash, waste incineration ash, blast furnace slag, steel slag and river sand, and 10wt.% of limestone, fluorite and cement to obtain a mixture with the water content of 45wt.%, wherein the organic matter content of the mixture is 35 wt.%; compression molding the mixture to obtain a wet green brick; sending the wet green bricks into an airing field for natural drying to obtain raw green bricks with the water content of 5 wt.%; sending the green bricks into a drying kiln, drying and preheating to 130 ℃ to obtain hot green bricks, and purifying and dedusting smoke generated by heat drying and then discharging the smoke up to the standard; sending the hot green bricks into a carbonization furnace, introducing argon as protective gas to isolate oxygen, heating to 400 ℃, preserving heat and carbonizing for 110min to obtain carbonized porous green bricks, and introducing combustible gas generated by carbonization into a drying kiln for combustion and heat supply; heating the carbonized porous green brick to 850 ℃ in the absence of oxygen, introducing steam and carbon dioxide as activating gas, and keeping the temperature for 50min to complete the sintering of the carbonized porous green brick and the activation of the interstitial biochar; and (3) isolating oxygen from the activated and sintered brick blank and cooling to room temperature to obtain the adsorption type porous brick.
The pores of the prepared adsorption type porous brick are formed by carbonizing and shrinking organic matters, and activated carbon is attached to the surfaces of the pores. The density of the prepared adsorption type porous brick is 370kg/m3The heat conductivity coefficient is 0.05 w/m.k, the sound insulation capacity of the adsorption type porous brick wall body with the thickness of 24cm is 100dB, and the adsorption type porous brick wall body has the adsorption capacity of formaldehyde, propionaldehyde, heavy metal ions and pesticides.
Example 20
Mixing and uniformly mixing 80wt.% of black and odorous river sludge with high organic matter content, sludge of a sewage treatment plant, activated sludge and municipal sludge, 15wt.% of fly ash, waste incineration ash, blast furnace slag, steel slag, river sand and quartz sand, and 5wt.% of limestone, soda ash and cement to obtain a mixture with water content of 55wt.%, wherein the organic matter content of the mixture is 30 wt.%; compression molding the mixture to obtain a wet green brick; sending the wet green bricks into an airing field for natural drying to obtain green bricks with the water content of 6 wt.%; sending the green bricks into a drying kiln, drying and preheating to 120 ℃ to obtain hot green bricks, and purifying and dedusting smoke generated by heat drying and then discharging the smoke up to the standard; sending the hot green bricks into a carbonization furnace, introducing nitrogen as protective gas to isolate oxygen, heating to 500 ℃, preserving heat and carbonizing for 70min to obtain carbonized porous green bricks, and introducing combustible gas generated by carbonization into a drying kiln for combustion and heat supply; heating the carbonized porous green brick to 1000 ℃ in an oxygen-isolated manner, introducing water vapor and carbon dioxide as activating gas, and preserving heat for 30min to finish the sintering of the carbonized porous green brick and the activation of the interstitial biochar; and (3) isolating oxygen from the activated and sintered brick blank and cooling to room temperature to obtain the adsorption type porous brick.
The pores of the prepared adsorption type porous brick are formed by carbonizing and shrinking organic matters, and activated carbon is attached to the surfaces of the pores. The density of the prepared adsorption type porous brick is 320kg/m3The heat conductivity coefficient is 0.06 w/m.k, the sound insulation capacity of the adsorption type porous brick wall body with the thickness of 24cm is 90dB, and the adsorption type porous brick wall body has the adsorption capacity of formaldehyde, propionaldehyde, heavy metal ions and pesticides.
Example 21
Mixing and uniformly mixing 90wt.% of high organic matter content dredged sediment, black and odorous river sludge, sludge of a sewage treatment plant, activated sludge and municipal sludge, 5wt.% of fly ash, steel slag, waste glass and quartz sand, 5wt.% of limestone, soda ash, fluorite and cement to obtain a mixture with the water content of 45wt.%, wherein the organic matter content of the mixture is 43 wt.%; compression molding the mixture to obtain a wet green brick; sending the wet green bricks into an airing field for natural drying to obtain raw green bricks with the water content of 12 wt.%; sending the green bricks into a drying kiln, drying and preheating to 150 ℃ to obtain hot green bricks, and purifying and dedusting smoke generated by heat drying and then discharging the smoke up to the standard; sending the hot green bricks into a carbonization furnace, introducing nitrogen as protective gas to isolate oxygen, heating to 450 ℃, preserving heat and carbonizing for 60min to obtain carbonized porous green bricks, and introducing combustible gas generated by carbonization into a drying kiln for combustion and heat supply; heating the carbonized porous green brick to 700 ℃ in an oxygen-isolated manner, introducing water vapor and carbon dioxide as activating gas, and preserving heat for 50min to finish the sintering of the carbonized porous green brick and the activation of the interstitial biochar; and (3) isolating oxygen from the activated and sintered brick blank and cooling to room temperature to obtain the adsorption type porous brick.
The pores of the prepared adsorption type porous brick are formed by carbonizing and shrinking organic matters, and activated carbon is attached to the surfaces of the pores. The density of the prepared adsorption type porous brick is 400kg/m3A coefficient of thermal conductivity ofThe sound insulation quantity of the adsorption type porous brick wall body with the thickness of 0.07 w/m.k and 24cm is 85dB, and the adsorption type porous brick wall body has the adsorption capacity of formaldehyde, propionaldehyde, heavy metal ions and pesticides.
Example 22
Preparing and uniformly mixing 70wt.% of high organic matter content dredged sediment, black and odorous river sludge, sludge of a sewage treatment plant, activated sludge and municipal sludge, 15wt.% of fly ash, waste incineration ash, blast furnace slag, steel slag, river sand, waste glass and quartz sand, 15wt.% of limestone, soda ash, fluorite and cement to obtain a mixture with the water content of 38wt.%, wherein the organic matter content of the mixture is 30 wt.%; extruding and forming the mixture to obtain a wet green brick; sending the wet green bricks into an airing field for natural drying to obtain raw green bricks with the water content of 5 wt.%; sending the green bricks into a drying kiln, drying and preheating to 150 ℃ to obtain hot green bricks, and purifying and dedusting smoke generated by heat drying and then discharging the smoke up to the standard; sending the hot green bricks into a carbonization furnace, introducing nitrogen as protective gas to isolate oxygen, heating to 550 ℃, preserving heat and carbonizing for 60min to obtain carbonized porous green bricks, and introducing combustible gas generated by carbonization into a drying kiln for combustion and heat supply; heating the carbonized porous green brick to 750 ℃ in an oxygen-isolated manner, introducing water vapor and carbon dioxide as activating gas, and preserving heat for 50min to finish the sintering of the carbonized porous green brick and the activation of the void biochar; and (3) isolating oxygen from the activated and sintered brick blank and cooling to room temperature to obtain the adsorption type porous brick.
The pores of the prepared adsorption type porous brick are formed by carbonizing and shrinking organic matters, and activated carbon is attached to the surfaces of the pores. The density of the prepared adsorption type porous brick is 350kg/m3The heat conductivity coefficient is 0.06 w/m.k, the sound insulation capacity of the adsorption type porous brick wall body with the thickness of 24cm is 80dB, and the adsorption type porous brick wall body has the adsorption capacity of formaldehyde, propionaldehyde, heavy metal ions and pesticides.
Example 23
Mixing and uniformly mixing 80wt.% of high organic matter content dredged sediment, black and odorous river sludge, activated sludge and municipal sludge, 15wt.% of fly ash, waste incineration ash, blast furnace slag, steel slag, waste glass and quartz sand, and 5wt.% of limestone and cement to obtain a mixture with the water content of 35wt.%, wherein the organic matter content of the mixture is 30 wt.%; extruding and forming the mixture to obtain a wet green brick; sending the wet green bricks into an airing field for natural drying to obtain raw green bricks with the water content of 7 wt.%; sending the green bricks into a drying kiln, drying and preheating to 120 ℃ to obtain hot green bricks, and purifying and dedusting smoke generated by heat drying and then discharging the smoke up to the standard; sending the hot green bricks into a carbonization furnace, introducing nitrogen as protective gas to isolate oxygen, heating to 500 ℃, preserving heat and carbonizing for 30min to obtain carbonized porous green bricks, and introducing combustible gas generated by carbonization into a drying kiln for combustion and heat supply; heating the carbonized porous green brick to 800 ℃ in the absence of oxygen, introducing steam and carbon dioxide as activating gas, and keeping the temperature for 30min to complete the sintering of the carbonized porous green brick and the activation of the interstitial biochar; and (3) isolating oxygen from the activated and sintered brick blank and cooling to room temperature to obtain the adsorption type porous brick.
The pores of the prepared adsorption type porous brick are formed by carbonizing and shrinking organic matters, and activated carbon is attached to the surfaces of the pores. The density of the prepared adsorption type porous brick is 350kg/m3The heat conductivity coefficient is 0.04 w/m.k, the sound insulation capacity of the adsorption type porous brick wall body with the thickness of 24cm is 100dB, and the adsorption type porous brick wall body has the adsorption capacity of formaldehyde, propionaldehyde, heavy metal ions and pesticides.

Claims (7)

1. The method for preparing the adsorption type perforated brick by using the sludge with high organic content is characterized by comprising the following steps of:
(1) uniformly mixing the ingredients: uniformly mixing the mixture to obtain a material with the water content of 30-55 wt.%, wherein the mixture comprises the following components in percentage by weight:
30-90 wt.% of high organic content sludge;
additive 5wt.% to 30 wt.%;
5-40 wt.% of a modifying agent;
(2) molding: extruding or compression molding the materials to obtain wet green bricks;
(3) naturally drying: naturally drying the wet green bricks to obtain raw green bricks with the water content of 1-15 wt.%;
(4) heat drying: sending the green brick into a drying kiln for drying, and preheating the temperature of the green brick to 100-150 ℃ to obtain a hot green brick;
(5) carbonizing: sending the hot green bricks into a carbonization furnace, introducing protective gas to isolate oxygen, heating to 300-600 ℃, preserving heat and carbonizing for 20-120 min to obtain carbonized porous green bricks;
(6) activating and sintering: heating the carbonized porous green brick to 600-1000 ℃ in an oxygen-isolated manner, introducing activated gas, and preserving the temperature for 30-60 min to finish the sintering of the carbonized porous green brick and the activation of the interstitial biochar;
(7) and (4) isolating oxygen from the green brick subjected to the activation sintering in the step (6) and cooling to room temperature to obtain the adsorption type porous brick.
2. The method for preparing the adsorption type perforated brick from the sludge with high organic content according to claim 1, wherein the organic content in the mixture is 25-50 wt.%.
3. The method for preparing the adsorption type perforated brick from the sludge with high organic matter content according to claim 1, wherein the sludge with high organic matter content is one or more of dredged sediment, black and odorous river sludge, sludge from sewage treatment plants, activated sludge and municipal sludge; the additive is one or a combination of more of fly ash, waste incineration ash, blast furnace slag, steel slag, river sand, waste glass and quartz sand; the material is one or a combination of more of limestone, soda ash, fluorite and cement.
4. The method for preparing the adsorption type perforated brick from the sludge with high organic content according to the claim 1, wherein the pores in the adsorption type perforated brick obtained in the step (7) are formed by carbonizing and shrinking organic matters, and activated carbon is attached to the surfaces of the pores; the obtained adsorption type porous brick has a density of 300kg/m3-500kg/m3The thermal conductivity is 0.04 w/m.k-0.15 w/m.k.
5. The method for preparing an adsorption type perforated brick from the sludge with high organic content according to claim 1, wherein when a wall with a thickness of 24cm is prepared from the adsorption type perforated brick obtained in the step (7), the sound insulation amount of the wall is 60dB to 100 dB.
6. The method for preparing the adsorption type perforated brick from the sludge with high organic content according to claim 1, wherein the protective gas taught in the step (5) is one of nitrogen, carbon dioxide or argon.
7. The method for preparing the adsorption type perforated brick from the sludge with high organic content according to claim 1, wherein the activated gas in the step (6) is one or both of water vapor and carbon dioxide.
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