阅读说明：本技术 一种利用危险废物碳封存及压裂液用支撑剂的制备方法 (Preparation method of proppant for carbon sequestration and fracturing fluid by utilizing hazardous wastes ) 是由 杨炳东 姚烁 胡本涛 于 2021-10-25 设计创作，主要内容包括：本发明公开了一种利用危险废物碳封存及压裂液用支撑剂的制备方法,所述利用危险废物碳封存及压裂液用支撑剂的制备方法主要步骤如下：S1：将进厂粒度为350～500mm的铝矾土以及原料,经过破碎后过筛,收集粒径≤6mm的原料,未达到要求的原料,再次进入粉碎流程并粉碎,S2：将收集的粒径≤6mm的原料送入60～90℃的烘干机内进行烘干,然后与锰粉、固定剂、润滑剂经过配料站,进入带有涡流选粉机的粉磨系统制备细度400目以上的生料粉,加水后将生料粉制成粒度合格的球粒,本发明通过烘干后进行磨粉并配套高效选粉机,组成闭路系统,这样粉磨的效率高,同时添加有锰粉、固定剂、润滑剂,增加成品的稳定性、强度、以及密封性和抗破碎能力。(The invention discloses a preparation method of a proppant for carbon sequestration and fracturing fluid by utilizing hazardous waste, which mainly comprises the following steps: s1: the bauxite with the incoming grain size of 350-500 mm and the raw material are crushed and sieved, the raw material with the grain size not larger than 6mm is collected, the raw material which does not meet the requirement enters the crushing process again and is crushed, and S2: the method comprises the steps of conveying collected raw materials with the particle size of less than or equal to 6mm into a dryer at 60-90 ℃ for drying, then enabling the raw materials, manganese powder, a fixing agent and a lubricating agent to enter a grinding system with an eddy current powder concentrator through a batching station to prepare raw material powder with the fineness of more than 400 meshes, adding water, and then enabling the raw material powder to be prepared into spherical particles with qualified particle sizes.)

1. The preparation method of the proppant for the carbon sequestration and fracturing fluid by utilizing the hazardous waste is characterized by mainly comprising the following steps of:

s1: crushing and sieving bauxite with the grain size of 350-500 mm and raw materials, collecting the raw materials with the grain size of less than or equal to 6mm, and crushing the raw materials which do not meet the requirement again in a crushing process;

s2: the collected raw materials with the particle size of less than or equal to 6mm are sent into a dryer at the temperature of 60-90 ℃ for drying, then the raw materials, manganese powder, a fixing agent and a lubricating agent pass through a batching station and enter a grinding system with an eddy current powder concentrator to prepare raw material powder with the fineness of more than 400 meshes, and the raw material powder is prepared into spherical particles with qualified particle size after water is added;

s3: then the mixture enters a rotary kiln for calcination after being screenedThe material balls are calcined in a rotary kiln with a certain inclination, the material balls roll towards the kiln head along with the rotation of the rotary kiln, meanwhile, the coal powder is sprayed into the kiln from the kiln head for combustion, the material balls are calcined into ceramsite sand with high strength in the rotary kiln, the calcined ceramsite sand is cooled by a single cooler, then the temperature of waste gas of the rotary kiln is dried for a second time, the waste gas is screened and cooled by a cylindrical screen, qualified different particle sizes are respectively packaged for standby, and unqualified ceramsite is returned to a grinding system.

2. The method for preparing the proppant for the carbon sequestration and fracturing fluid by using hazardous wastes according to claim 1, wherein the grinding time of the raw meal is 10 hours.

3. The method for preparing the proppant for the carbon sequestration and fracturing fluid by using the hazardous waste as claimed in claim 1, wherein the raw material powder is prepared into qualified spherulites with a granularity of 20-25 meshes.

4. The method for preparing the proppant for the hazardous waste carbon sequestration and fracturing fluid according to claim 1, wherein the raw material powder is prepared into a particle size and calcined at a temperature of 1300-1400 ℃.

5. The method for preparing the proppant for the use of hazardous waste carbon sequestration and fracturing fluid according to claim 1, wherein the raw meal is granulated and cooled in an environment with a temperature of 23-25 ℃.

6. The preparation method of the proppant for the carbon sequestration and fracturing fluid by using hazardous wastes according to claim 1, characterized in that the raw materials comprise, by weight: 25-30 parts of bauxite, 5-10 parts of iron ore, 12-18 parts of resin, 20-23 parts of bentonite, 13-15 parts of dolomite, 1-5 parts of barium carbonate and 20-30 parts of quartz sand.

7. The preparation method of the proppant for the hazardous waste carbon sequestration and fracturing fluid according to claim 1, wherein the manganese powder comprises the following components in parts by weight: 20-23 parts.

8. The preparation method of the proppant for the carbon sequestration and fracturing fluid by using hazardous wastes as claimed in claim 1, wherein the fixing agent comprises the following raw materials in proportion: 3-10 parts of m-phenylenediamine, 11-14 parts of benzenesulfonic acid, 6-13 parts of m-phenylenediamine, 4-12 parts of phosphoric acid and 5-10 parts of triethylene tetramine ethylenediamine.

9. The method for preparing the proppant for the use of hazardous waste carbon sequestration and fracturing fluid according to claim 1, wherein the lubricant is composed of methyl silicone oil and polyethylene wax.

Technical Field

The invention relates to the technical field of hazardous waste carbon sealing and fracturing fluid, in particular to a preparation method of a proppant for hazardous waste carbon sealing and fracturing fluid.

Background

Carbon capture and sequestration refers to a technology for collecting carbon dioxide generated by a power plant which emits a large amount of exhaust gas and storing the carbon dioxide by various methods to avoid the carbon dioxide from being emitted to the atmosphere, wherein the carbon sequestration comprises geological sequestration and ocean sequestration, wherein geological storage is realized by fracturing treatment through high closure pressure and low permeability of fracturing fluid to crack a geological rock stratum, a propping agent material is injected at the moment to form a storage channel for storage, and the carbon dioxide capture is divided into a plurality of methods such as capture before combustion and capture by combustion.

However, most of the existing proppants used for carbon sealing are products prepared from bauxite serving as a main raw material, and the products are low in strength and poor in sealing property and crushing resistance, so that the existing proppants are not suitable for carbon sealing used at present and do not have high stability for carbon sealing.

Disclosure of Invention

The invention aims to solve the following defects in the prior art, and provides a method for preparing a proppant for carbon sequestration and fracturing fluid by using hazardous wastes, wherein the existing proppant for carbon sequestration is mostly a product prepared from bauxite serving as a main raw material, and the product is low in strength, poor in sealing property and poor in crushing resistance, so that the existing proppant is not suitable for carbon sequestration and does not have high stability for carbon sequestration.

In order to achieve the purpose, the invention adopts the following technical scheme:

the preparation method of the proppant for the hazardous waste carbon sequestration and fracturing fluid mainly comprises the following steps:

s1: crushing and sieving bauxite with the grain size of 350-500 mm, collecting raw materials with the grain size of less than or equal to 6mm, and crushing the raw materials which do not meet the requirement again in a crushing process;

s2: the collected raw materials with the particle size of less than or equal to 6mm are sent into a dryer at the temperature of 60-90 ℃ for drying, then the raw materials, manganese powder, a fixing agent and a lubricating agent pass through a batching station and enter a grinding system with an eddy current powder concentrator to prepare raw material powder with the fineness of more than 400 meshes, and the raw material powder is prepared into spherical particles with qualified particle size after water is added;

s3: then the mixture enters a rotary kiln for calcination after being screenedAnd then the mixture enters a rotary kiln with a certain inclination for calcination,the material balls roll towards the kiln head along with the rotation of the rotary kiln, meanwhile, the coal powder is sprayed into the kiln from the kiln head for combustion, the material balls are calcined into ceramsite sand with high strength in the rotary kiln, the calcined ceramsite sand is cooled by a single cooler, then the temperature of waste gas of the rotary kiln is dried for a second time and then is screened and cooled by a cylindrical screen, qualified different particle sizes are respectively packaged for later use, and unqualified ceramsite particles are returned to a grinding system.

Preferably, the grinding time of the raw meal powder is 10 hours.

Preferably, the raw material powder is prepared into qualified spherulites with the granularity of 20-25 meshes.

Preferably, the raw material powder is prepared into particles and calcined at the temperature of 1300-1400 ℃.

Preferably, the raw material powder is granulated and cooled in an environment with the temperature of 23-25 ℃.

Preferably, the weight ratio of the raw materials is as follows: 25-30 parts of bauxite, 5-10 parts of iron ore, 12-18 parts of resin, 20-23 parts of bentonite, 13-15 parts of dolomite, 1-5 parts of barium carbonate and 20-30 parts of quartz sand.

Preferably, the manganese powder comprises the following components in parts by weight: 20-23 parts.

Preferably, the fixing agent comprises the following raw materials in percentage by weight: 3-10 parts of m-phenylenediamine, 11-14 parts of benzenesulfonic acid, 6-13 parts of m-phenylenediamine, 4-12 parts of phosphoric acid and 5-10 parts of triethylene tetramine ethylenediamine.

Preferably, the lubricant is composed of methyl silicone oil and polyethylene wax.

Compared with the prior art, the invention has the beneficial effects that:

1. the raw materials after collecting are dried, carry out the crocus and supporting high-efficient selection powder machine after the stoving, constitute closed system, the efficient of crocus like this, add manganese powder, fixative, emollient simultaneously, increase off-the-shelf stability, intensity, and leakproofness and anti crushing ability, can be better be used for the geology and store, make the geology stratum split after carrying out fracturing treatment through fracturing fluid high closure pressure hyposmosis, inject into the proppant material this moment, form the storage passageway of a carbon sealed up and store carbon dioxide.

2. Meanwhile, when the collected raw materials with the particle size of less than or equal to 6mm are sent into a dryer at 60-90 ℃ to be dried and then stored, the temperature of waste gas of the rotary kiln can be used for secondary drying during storage, waste heat utilization is achieved, manufacturing cost is saved, and residual moisture in the materials is avoided.

3. The calcined ceramsite sand is cooled by the single-cooler and then screened and cooled by the cylindrical screen, qualified different particle sizes are packaged for later use respectively, unqualified spherulites are returned to the grinding system, and therefore the effect of collecting different particle sizes is achieved, the different particle sizes are distinguished and used, meanwhile, the ceramsite sand has the characteristics of high temperature resistance, high pressure resistance and high strength, and the ceramsite sand can be effectively used in fracturing fluid carbon sequestration.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

A preparation method of a proppant for carbon sequestration and fracturing fluid by utilizing hazardous wastes mainly comprises the following steps:

s1: bauxite with the incoming grain size of 350-500 mm and raw materials are used, the bauxite is used as a main material for manufacturing a propping agent, and the weight ratio of the rest raw materials is as follows: 5-10 parts of iron ore, 12-18 parts of resin, 20-23 parts of bentonite, 13-15 parts of dolomite, 1-5 parts of barium carbonate and 20-30 parts of quartz sand, wherein the quartz sand is a non-metallic mineral substance and is a silicate mineral with hardness, wear resistance and stable chemical properties, the hardness and wear resistance of a raw material mixture can be increased, and the good performance of a geological carbon sealed storage environment can be guaranteed, when a single-layer resin coats the quartz sand, the type of the resin, the content of the resin, the curing temperature and the like have influence on the performance of a film coating supporting agent, the performance of the quartz sand is obviously improved after coating polyimide resin, when the curing temperature is 180 ℃, and the content of the resin is 8 wt%, the performance is best, the raw material with the particle size of less than or equal to 6mm is collected after crushing, the raw material with the particle size of less than or equal to 6mm is crushed again, the bauxite block serving as the raw material needs to control the particle size, the drying and grinding of the subsequent work are convenient;

s2: sending the collected raw materials with the particle size of less than or equal to 6mm into a dryer at the temperature of 60-90 ℃ for drying, and then passing the raw materials, manganese powder, a fixing agent and a lubricating agent through a batching station, wherein the manganese powder comprises the following components in parts by weight: 20 ~ 23 parts, manganese powder mainly improves intensity, hardness, elastic limit, wearability and the corrosion resistance etc. of composition, can play the better effect of sealing up the deposit to carbon dioxide in the carbon seals up the space to and can increase the stability of thick deposit structure, fixing agent raw materials ratio is: 3-10 parts of m-phenylenediamine, 11-14 parts of benzenesulfonic acid, 6-13 parts of meta-phenylenediamine, 4-12 parts of phosphoric acid and 5-10 parts of triethylene tetramine ethylenediamine, wherein a lubricant is composed of methyl silicone oil and polyethylene wax, raw material powder with the fineness of more than 400 meshes is prepared in a grinding system with a vortex powder concentrator, and the raw material powder is prepared into spherical particles with qualified particle size after water is added;

s3: then the mixture enters a rotary kiln for calcination after being screenedThe material ball is calcined in the rotary kiln with a certain inclination, the material ball rolls to the kiln head along with the rotation of the rotary kiln, and the coal powder is sprayed into the kiln from the kiln head for combustion, the coal powder burner can adopt a single-air-channel coal spraying pipe, is simple and reliable, has high primary air quantity, can also adopt a multi-air-channel burner, has the primary air quantity reduced to 8 percent of the air quantity required by the combustion of the coal powder, improves the secondary air quantity entering the kiln, has obvious energy-saving effect, is calcined into high-strength ceramsite sand in the rotary kiln, is calcined at the temperature of 1300-1400 ℃ when raw material powder is prepared into granularity, is cooled by a single cooler, is generally cooled by a rotary cooler, has simple and reliable operation, completely enters the kiln by secondary air of the cooler, is matched with the use of the multi-channel burner, can save a large amount of energy consumption, has low ceramsite sand temperature out of the cooler, and can be grabbed by hands, then the temperature of the waste gas of the rotary kiln is dried for a second time and then is screened and cooled by a cylindrical screen, so that the waste heat can be utilizedAnd the manufacturing cost is saved, the effect of recycling waste gas is achieved, the effect of drying incompletely dried materials again can be achieved, qualified different particle sizes are respectively packaged for standby, and unqualified spherical particles are returned to the grinding system.

According to the invention, bauxite which is a main material is firstly mined, the block size after mining is about 300-500 mm generally, and the bauxite containing a small amount of water is collected and stored, a crushing system consisting of a jaw crusher and a hammer crusher is firstly adopted for crushing when processing is required, the raw material with large particle size can be rapidly crushed and processed, the raw material with different particle sizes is screened after crushing, the particle size of the raw material is controlled to be less than or equal to 6mm through screening for multiple times, the raw material which does not reach the requirement is collected and reserved, and meanwhile, the raw material which reaches the requirement after crushing enters the crushing process again and is crushed, and the raw material which reaches the requirement after crushing is collected and used again.

Drying the collected raw materials, grinding the raw materials after drying, and matching with a high-efficiency powder selecting machine to form a closed-loop system, so that the grinding efficiency after drying is high, the working efficiency can be accelerated, manganese powder, a fixing agent and a lubricating agent are added in the processing process, the stability of a finished product is improved, hot air for drying the materials can come from waste gas of a rotary kiln, the waste heat is utilized, then raw material powder is made into spherulites with qualified granularity after water is added, meanwhile, the raw material powder is screened to be made into the spherulites with the qualified granularity of 20-25 meshes, the spherulites enter the rotary kiln with a certain inclination for calcination, the material balls roll towards a kiln head along with the rotation of the rotary kiln, meanwhile, the coal powder is sprayed into the kiln from the kiln head for combustion, the material balls are calcined into ceramsite sand with high strength in the rotary kiln, and the raw material powder is made into ceramsite with the granularity of 1300-1400 ℃ for calcinationThe calcined ceramsite sand is cooled by a single cooler, a rotary cooler is generally adopted for cooling the ceramsite sand, the operation is simple and reliable, secondary air of the cooler completely enters the kiln, a plurality of channel burners are matched for use, a large amount of energy consumption can be saved, the ceramsite sand discharged from the cooler is low in temperature and can be grabbed by hands, and then the temperature of waste gas of the rotary kiln is dried for the second timeThen sieving through a cylindrical sieve, cooling and then sieving through the cylindrical sieve.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.