Method for co-processing wind power generation scrap materials with industrial kilns

Abstract

The present application relates to the field of environmental protection, and particularly to a technology for disposing of wind power generation scrap materials by using industrial kiln; the organic metal catalytic adsorption filler prepared by the present application is used for adsorbing dioxins in flue gas; through catalytic reaction, the dioxins are converted into more harmless or more easily handled compounds, so as to reduce the content; at the same time, the adsorption effect can also help to remove dioxins from the flue gas; such conversion includes breaking of chemical bonds, rearrangement or change of functional groups, etc.; through these changes, the toxicity and stability of dioxins are reduced, so that they are more easily handled or degraded; at the same time, due to the adsorption effect, the dioxins are fixed on the catalyst or adsorbent, so as to be effectively removed from the flue gas; the present application has simple process, small investment, low cost and high economy, and industrial waste such as plastic, rubber, tire, etc. is used as combustion-supporting material.

Description

Technical Field

[0001] This invention relates to the field of environmental protection, and in particular to a method for co-processing waste materials from wind power generation using industrial kilns. Background Technology

[0002] The development of wind power generation requires a large number of wind turbine blades. However, the standard design life of wind turbine blades is generally about 20 to 25 years. Most of the wind turbine blades currently installed globally will reach the end of their standard lifespan between 2020 and 2034. In my country, the first batch of wind turbine blades put into use is also expected to be decommissioned around 2025. Therefore, a wave of wind turbine blade decommissioning will occur globally in the future, generating a large amount of composite material waste.

[0003] Chinese Patent CN216346283U: Provides an RDF fuel furnace for hot melting of waste wind turbine blades, including a support frame, a crushing mechanism fixedly installed on the top of the support frame, a feeding mechanism fixedly connected to the bottom of the support frame, a base on one side of the support frame, mounting frames fixedly installed at both ends of the base, and a combustion mechanism fixedly installed in the middle of the mounting frame. Through the combustion mechanism, the blades are transported through the discharge pipe to the feed pipe connected to one end of the combustion furnace. The blades slide from the feed pipe onto the surface of the combustion frame installed in the middle of the combustion furnace. The waste blades are burned by the burners installed on the inner wall of the combustion furnace. The ash after combustion falls into the bottom of the combustion frame through the waste hole and is finally discharged from the slag discharge hole opened at the bottom of the combustion frame. The exhaust gas generated by combustion is discharged from the exhaust pipe.

[0004] Chinese Patent CN214864269U: A wind power waste blade crushing and recycling device, comprising a crusher body (1) mounted on a mobile tracked vehicle (2), a feed hopper (3) mounted on the top feed inlet of the crusher body (1), and a discharge conveyor belt assembly (4) mounted on the side discharge outlet of the crusher body (1). A U-shaped dustproof plate (1.1) is enclosed on the feed inlet of the crusher body (1), with the opening end of the dustproof plate (1.1) facing the feed hopper (3). The two sides of the feed hopper (3) are folded upwards with flanges, and a U-shaped dustproof baffle (6) is mounted on the flange of the feed hopper (3). The two ends of the dustproof baffle (6) are connected to the two ends of the dustproof plate (1.1). The dustproof plate (1.1) and the dustproof baffle (6) are covered with a dustproof cover (7). This utility model provides a wind power waste blade crushing and recycling device, which has a high dustproof function and can filter metal impurities in the powder.

[0005] Chinese Patent CN217830174U relates to the field of wind power generation materials technology, specifically disclosing a wind power generation material recycling and reuse device. The device includes a frame, a conveyor roller fixedly installed on the inner wall of the frame, wind turbine blades movably installed on the top of the conveyor roller, a smooth rod frame extending through the top of the frame, a spring embedded in the outside of the smooth rod frame, and a bearing frame fixedly installed at the bottom of the smooth rod frame. This invention uses a first motor to drive the pressure roller to rotate, ensuring close contact between the pressure roller and the outer surface of the wind turbine blades. The pressure roller can move the wind turbine blades. A second motor drives a second crushing shaft to rotate, and two meshing gears can drive a first crushing shaft to rotate. The two crushing shafts can disassemble and crush the wind turbine blades. During the process, the first and second crushing shafts do not bear the weight of the wind turbine blades, thus avoiding bending and deformation of the first and second crushing shafts during the crushing process.

[0006] Currently, wind power waste materials are difficult to degrade, have high processing costs, and the recycling process is complex; they also cause secondary pollution to the environment. Summary of the Invention

[0007] To address the aforementioned problems, this invention provides a method for co-processing waste materials from wind power generation using an industrial kiln, the operation steps of which are as follows:

[0008] A1: Weigh 80-100 parts by weight of wind power generation waste material and crush it;

[0009] A2: The crushed waste is sent into an industrial kiln and laid at the bottom of the kiln. The industrial waste is burned in the upper part of the kiln. The flue gas produced by pyrolysis enters the adsorption tower to adsorb dioxins. The adsorption tower is filled with organometallic catalytic adsorption packing.

[0010] A3: The residue after incineration is sent to a water pool to collect the floating matter in the water, and then ground again to a particle size of 10-15mm;

[0011] A4: After grinding, the metal is screened out by magnetic separation and photoelectric separation. Add 5-10 parts of calcium oxide to the remaining residue, mix evenly, and then extrude it into shape using a roller press.

[0012] A5: The extruded waste is sent back to the industrial kiln for further high-temperature incineration.

[0013] As a further supplement to the above technical solution, the A1 is crushed to a particle size of 50-100mm.

[0014] As a further supplement to the above technical solution, the incineration temperature of A2 is 500-600℃.

[0015] As a further supplement to the above technical solution, the thickness of the bottom material layer of the industrial kiln is controlled at 10-20cm.

[0016] As a further supplement to the above technical solution, the industrial waste mentioned therein is one or more of plastics, rubber, or tires.

[0017] As a further supplement to the above technical solution, the high-temperature incineration temperature of A5 is 800-900℃.

[0018] In another aspect, this invention provides a method for preparing organometallic catalytic adsorption packing material, wherein aminodi(methylenephosphonic acid) is reacted with vanadium tetrachloride and titanium tetrachloride, respectively, to generate aminodi(methylenephosphonic acid)vanadium / titanium complexes. This is a typical coordination chemistry reaction, in which aminodi(methylenephosphonic acid) acts as a ligand to coordinate with a metal center (here, vanadium or titanium) to generate complexes. These complexes then undergo an amino-acrylic acid addition reaction with tributyltin acrylate. In this reaction, acrylic acid undergoes an addition reaction with the aminodi(methylenephosphonic acid) complex through its double bond to generate new organometallic complexes. These complexes are loaded onto X molecular sieves to obtain organometallic catalytic adsorption packing material.

[0019] Specifically, the preparation method of the above-mentioned organometallic catalytic adsorption packing material is as follows:

[0020] B1: According to the mass fractions, add 21-42 parts of aminodi(methylenephosphoric acid), 3-7 parts of vanadium tetrachloride, 1-4 parts of titanium tetrachloride, 300-400 parts of DMF, and 2-5 parts to a stirred tank and stir at 40-50℃ for 60-100 min.

[0021] B2: Add 4-8 parts of tributyltin acrylate and 3-6 parts of triethylamine, and stir at 60-70℃ for 60-100 minutes;

[0022] B3: Mix with X molecular sieve, adding 1-5% of the mass percentage of X molecular sieve, remove DMF by vacuum distillation, and place in a constant temperature oven at 120-160℃ for 10-20h to obtain organometallic material that adsorbs dioxins.

[0023] The present invention provides a method for co-processing wind power generation waste materials using an industrial kiln. Compared with the prior art, the present invention has the following significant advantages:

[0024] 1. The organometallic catalytic adsorption packing prepared in this invention is used for the catalytic adsorption of dioxins in flue gas; through catalytic reaction, dioxins are converted into more harmless or easier-to-treat compounds, thereby reducing their content; at the same time, adsorption may also help remove dioxins from flue gas; this conversion includes the breaking, rearrangement, or alteration of functional groups; through these changes, the toxicity and stability of dioxins are reduced, making them easier to treat or degrade; simultaneously, due to adsorption, dioxins are immobilized on the catalyst or adsorbent, thereby being effectively removed from the flue gas;

[0025] 2. The process of this invention is simple, requires little investment, and uses industrial waste such as plastics, rubber, and tires as combustion aids, resulting in low cost and high economic efficiency. Detailed Implementation

[0026] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the invention. Unless otherwise specified, the technical means used in the examples are conventional means well known to those skilled in the art, and the raw materials used are all commercially available products.

[0027] Flue gas was collected according to the "Sampling Gas Bag Method for Volatile Organic Compounds in Exhaust Gas from Stationary Sources" (HJ732-2014), and VOCs in the flue gas were determined according to the "Determination of Volatile Organic Compounds in Exhaust Gas from Stationary Sources by Solid Phase Adsorption-Thermal Desorption / Gas Chromatography-Mass Spectrometry" (HJ732-2014). Example

[0028] A method for co-processing waste materials from wind power generation using an industrial kiln, comprising the following steps:

[0029] A1: Weigh 80kg of wind power generation waste material and crush it;

[0030] A2: The crushed waste is sent into an industrial kiln and laid at the bottom of the kiln. The industrial waste is burned in the upper part of the kiln. The flue gas generated by pyrolysis enters the adsorption tower to adsorb dioxins. The tower is filled with organometallic catalytic adsorption packing.

[0031] A3: The residue after incineration is sent to a water pool to collect the floating matter in the water, and then ground again to a particle size of 10mm;

[0032] A4: After grinding, the metal is screened out by magnetic separation and photoelectric separation. 5 kg of calcium oxide is added to the remaining residue, mixed evenly, and then extruded into shape by a roller press.

[0033] A5: The extruded waste is sent back to the industrial kiln for further high-temperature incineration.

[0034] The A1 is crushed to a particle size of 50 mm.

[0035] The incineration temperature of A2 is 500°C.

[0036] The thickness of the bottom material layer in the industrial kiln is controlled at 10cm.

[0037] The industrial waste in question is plastic.

[0038] The high-temperature incineration temperature of A5 is 800℃.

[0039] The preparation method of the organometallic catalytic adsorption packing is as follows:

[0040] B1: Add 21kg of aminodi(methylenephosphoric acid), 3kg of vanadium tetrachloride, 1kg of titanium tetrachloride, 300kg of DMF and 2kg of other ingredients to a stirred tank and stir at 40℃ for 60min.

[0041] B2: Add 4 kg of tributyltin acrylate and 3 kg of triethylamine, and stir at 60°C for 60 min;

[0042] B3: Mix with X molecular sieve at a concentration of 1% of the mass percentage of X molecular sieve, remove DMF by vacuum distillation, and place in a constant temperature oven at 120°C for 10 hours to obtain an organometallic material that adsorbs dioxins. Example

[0043] A method for co-processing waste materials from wind power generation using an industrial kiln, comprising the following steps:

[0044] A1: Weigh 85kg of wind power scrap material and crush it;

[0045] A2: The crushed waste is sent into an industrial kiln and laid at the bottom of the kiln. The industrial waste is burned in the upper part of the kiln. The flue gas generated by pyrolysis enters the adsorption tower to adsorb dioxins. The tower is filled with organometallic catalytic adsorption packing.

[0046] A3: The residue after incineration is sent to a water pool to collect floating objects in the water, and then ground again to a particle size of 12mm;

[0047] A4: After grinding, the metal is screened out by magnetic separation and photoelectric separation in sequence; 6 kg of calcium oxide is added to the remaining residue, mixed evenly, and then extruded into shape by a roller press.

[0048] A5: The extruded waste is sent back to the industrial kiln for further high-temperature incineration.

[0049] The A1 is crushed to a particle size of 60mm.

[0050] The incineration temperature of A2 is 530°C.

[0051] The thickness of the bottom material layer in the industrial kiln is controlled at 15cm.

[0052] The industrial waste in question is rubber.

[0053] The high-temperature incineration temperature of A5 is 840℃.

[0054] The preparation method of the organometallic catalytic adsorption packing is as follows:

[0055] B1: Add 28kg of aminodi(methylenephosphoric acid), 4kg of vanadium tetrachloride, 2kg of titanium tetrachloride, 330kg of DMF and 3kg of other ingredients to a stirred tank and stir at 45℃ for 70min.

[0056] B2: Add 5 kg of tributyltin acrylate and 4 kg of triethylamine, and stir at 65°C for 70 min;

[0057] B3: Mix with X molecular sieve at a concentration of 2% of the mass percentage of X molecular sieve, remove DMF by vacuum distillation, and place in a constant temperature oven at 130°C for 14 hours to obtain an organometallic material that adsorbs dioxins.

[0058] Example 3

[0059] A method for co-processing waste materials from wind power generation using an industrial kiln, comprising the following steps:

[0060] A1: Weigh 95kg of wind power generation waste material and crush it;

[0061] A2: The crushed waste is sent into an industrial kiln and laid at the bottom of the kiln. The industrial waste is burned in the upper part of the kiln. The flue gas generated by pyrolysis enters the adsorption tower to adsorb dioxins. The tower is filled with organometallic catalytic adsorption packing.

[0062] A3: The residue after incineration is sent to a water pool to collect floating objects in the water, and then ground again to a particle size of 14mm;

[0063] A4: After grinding, the metal is screened out by magnetic separation and photoelectric separation in sequence; 8 kg of calcium oxide is added to the remaining residue, mixed evenly, and then extruded into shape by a roller press.

[0064] A5: The extruded waste is sent back to the industrial kiln for further high-temperature incineration.

[0065] The A1 is crushed to a particle size of 90mm.

[0066] The incineration temperature of A2 is 580°C.

[0067] The thickness of the bottom material layer in the industrial kiln is controlled at 18cm.

[0068] The industrial waste in question is rubber.

[0069] The high-temperature incineration temperature of A5 is 880℃.

[0070] The preparation method of the organometallic catalytic adsorption packing is as follows:

[0071] B1: Add 37kg of aminodi(methylenephosphoric acid), 6kg of vanadium tetrachloride, 3kg of titanium tetrachloride, 380kg of DMF, and 4kg of other ingredients to a stirred tank and stir at 45℃ for 90min.

[0072] B2: Add 7 kg of tributyltin acrylate and 5 kg of triethylamine, and stir at 65°C for 90 min;

[0073] B3: Mix with X molecular sieve at a concentration of 4% of the mass percentage of X molecular sieve, remove DMF by vacuum distillation, and place in a constant temperature oven at 150°C for 18 hours to obtain an organometallic material that adsorbs dioxins.

[0074] Example 4

[0075] A method for co-processing waste materials from wind power generation using an industrial kiln, comprising the following steps:

[0076] A1: Weigh 100kg of scrapped wind power generation materials and crush them;

[0077] A2: The crushed waste is sent into an industrial kiln and laid at the bottom of the kiln. The industrial waste is burned in the upper part of the kiln. The flue gas generated by pyrolysis enters the adsorption tower to adsorb dioxins. The tower is filled with organometallic catalytic adsorption packing.

[0078] A3: The residue after incineration is sent to a water pool to collect the floating matter in the water, and then ground again to a particle size of 15mm;

[0079] A4: After grinding, the metal is screened out by magnetic separation and photoelectric separation in sequence; 10 kg of calcium oxide is added to the remaining residue, mixed evenly, and then extruded into shape by a roller press.

[0080] A5: The extruded waste is sent back to the industrial kiln for further high-temperature incineration.

[0081] The A1 is crushed to a particle size of 100mm.

[0082] The incineration temperature of A2 is 600°C.

[0083] The thickness of the bottom material layer in the industrial kiln is controlled at 20cm.

[0084] The industrial waste mentioned is tires.

[0085] The high-temperature incineration temperature of A5 is 900℃.

[0086] The preparation method of the organometallic catalytic adsorption packing is as follows:

[0087] B1: Add 42kg of aminodi(methylenephosphoric acid), 7kg of vanadium tetrachloride, 4kg of titanium tetrachloride, 400kg of DMF and 5kg of other ingredients to a stirred tank and stir at 50℃ for 100min.

[0088] B2: Add 8 kg of tributyltin acrylate and 6 kg of triethylamine, and stir at 70°C for 100 min;

[0089] B3: Mix with X molecular sieve at a concentration of 5% of the mass percentage of X molecular sieve, remove DMF by vacuum distillation, and place in a constant temperature oven at 160℃ for 20 hours to obtain an organometallic material that adsorbs dioxins.

[0090] Comparative Example 1

[0091] Except for the absence of organometallic catalytic adsorption filler, the rest is the same as in Example 1.

[0092] Comparative Example 2

[0093] Except for the absence of aminodi(methylene phosphate), the same as in Example 1.

[0094] Comparative Example 3

[0095] Except for the absence of tributyltin acrylate, the same as in Example 1.

[0096] Table 1 Results of the Examples

[0097] Incineration rate / % VOCs content in flue gas / mg / m 3 ]] Example 1 99.91 8.9 Example 2 99.95 6.5 Example 3 99.98 4.8 Example 4 99.995 3.7 Comparative Example 1 84.73 34.4 Comparative Example 2 92.35 18.8 Comparative Example 3 93.69 16.1

[0098] Based on the data analysis of the above embodiments and comparative examples, the organometallic catalytic adsorption packing prepared by the present invention can effectively adsorb dioxins, thereby effectively removing them from flue gas.

[0099] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A method for co-processing waste materials from wind power generation using an industrial kiln, comprising the following steps: A1: Weigh 80-100 parts by weight of wind power generation waste material and crush it; A2: The crushed waste is sent into an industrial kiln and laid at the bottom of the kiln. The industrial waste is burned in the upper part of the kiln. The flue gas produced by pyrolysis enters the adsorption tower to adsorb dioxins. The adsorption tower is filled with organometallic catalytic adsorption packing. A3: The residue after incineration is sent to a water pool to collect the floating matter in the water, and then ground again to a particle size of 10-15mm; A4: After grinding, the metal is screened out by magnetic separation and photoelectric separation. Add 5-10 parts of calcium oxide to the remaining residue, mix evenly, and then extrude it into shape using a roller press. A5: The extruded waste is sent back to the industrial kiln for further high-temperature incineration. The preparation method of the organometallic catalytic adsorption packing is as follows: B1: Add 21-42 parts of aminodi(methylenephosphoric acid), 3-7 parts of vanadium tetrachloride, 1-4 parts of titanium tetrachloride, and 300-400 parts of DMF to a stirred tank according to the mass fraction, and stir at 40-50℃ for 60-100 min. B2: Add 4-8 parts of tributyltin acrylate and 3-6 parts of triethylamine, and stir at 60-70℃ for 60-100 minutes; B3: Mix with X molecular sieve, adding 1-5% of the mass percentage of X molecular sieve, remove DMF by vacuum distillation, and place in a constant temperature oven at 120-160℃ for 10-20h to obtain organometallic catalytic adsorption packing.

2. The method for co-processing wind power generation waste materials using an industrial kiln according to claim 1, characterized in that: The A1 is crushed to a particle size of 50-100mm.

3. The method for co-processing wind power generation waste materials using an industrial kiln according to claim 1, characterized in that: The incineration temperature of A2 is 500-600℃.

4. The method for co-processing wind power generation waste materials using an industrial kiln according to claim 1, characterized in that: The thickness of the bottom material layer in the industrial kiln is controlled at 10-20cm.

5. A method for co-processing wind power generation waste materials using an industrial kiln according to claim 1, characterized in that: The industrial waste mentioned is one or more of plastics, rubber, or tires.

6. A method for co-processing wind power generation waste materials using an industrial kiln according to claim 1, characterized in that: The high-temperature incineration temperature of A5 is 800-900℃.