阅读说明：本技术 一种基于生物质燃料煅烧熟料的工业废渣砌筑水泥及其制备方法 (Industrial waste residue masonry cement based on biomass fuel calcined clinker and preparation method thereof ) 是由 程小兵 张慧明 毛施昂 李迎春 葛德贵 戴挥 尹遥 于 2020-12-12 设计创作，主要内容包括：本发明公开了一种基于生物质燃料煅烧熟料的工业废渣砌筑水泥及其制备方法,包括生料及煤粉制备除尘、熟料煅烧除尘和水泥粉磨除尘,所述水泥生产顺序为生料及煤粉制备、熟料煅烧和水泥粉磨,所述生料及煤粉制备除尘与水泥粉磨除尘均采用水雾降尘方法进行除尘,所述熟料煅烧储存采用处理塔对灰尘气体进行除尘,并且高温空气通入余热发电站,实现热量的回收利用。本发明针对水泥生料、熟料和成品生产过程中所产生的灰尘进行全面消除,减少粉尘污染,维护工作人员的身体健康,并且对熟料生产过程中所产生的热量进行有效回收利用,不仅节能环保,还能够减少污染物的产生。(The invention discloses industrial waste residue masonry cement based on biomass fuel calcined clinker and a preparation method thereof, wherein the industrial waste residue masonry cement comprises raw material and coal powder preparation dust removal, clinker calcination dust removal and cement grinding dust removal, the cement production sequence comprises raw material and coal powder preparation, clinker calcination and cement grinding dust removal, the raw material and coal powder preparation dust removal and the cement grinding dust removal are both carried out by adopting a water mist dust fall method, the clinker calcination storage adopts a treatment tower to carry out dust removal on dust gas, and high-temperature air is introduced into a waste heat power station to realize the recycling of heat. The invention comprehensively eliminates dust generated in the production process of cement raw materials, clinker and finished products, reduces dust pollution, maintains the health of workers, effectively recycles heat generated in the production process of the clinker, saves energy, protects environment and reduces the generation of pollutants.)

1. An industrial waste residue masonry cement based on biomass fuel calcined clinker and a preparation method thereof, which comprises raw material and coal powder preparation dust removal, clinker calcination dust removal and cement grinding dust removal, and is characterized in that: the cement production sequence comprises raw material and coal powder preparation, clinker calcination and cement grinding, wherein the raw material and coal powder preparation dust removal and the cement grinding dust removal are both carried out by adopting a water mist dust settling method, the clinker calcination and storage are carried out by adopting a treatment tower to remove dust from dust gas, and high-temperature air is introduced into a waste heat power station, so that the heat recycling is realized.

2. The industrial residue masonry cement based on biomass fuel calcined clinker and the preparation method thereof according to claim 1 are characterized in that: the raw material and coal powder preparation dedusting is divided into raw material preparation dedusting and coal powder preparation dedusting;

raw materials in the raw material preparation process are limestone, clay and iron ore, raw materials in the coal powder preparation process are raw coal, the limestone, the clay and the iron ore are crushed, homogenized and stored to prepare raw materials, water mist dust fall is arranged at a position where dust is generated in the crushing, homogenizing and storing processes, and the dust is adsorbed by the water mist to realize the dust fall;

the coal dust settling method is characterized in that raw coal is homogenized, transported and prepared in the coal powder preparation process, water mist dust settling is performed on the raw coal in the raw coal homogenizing, transporting and preparing processes, and water mist is adopted to perform dust settling on the raw coal dust, so that flying of the dust is reduced.

3. The industrial residue masonry cement based on biomass fuel calcined clinker and the preparation method thereof according to claim 2 are characterized in that: limestone raw materials, clay and iron ore use the conveyer belt to carry to raw materials allotment equipment after broken, homogenization and storage, and at limestone raw materials, clay and iron ore allotment in-process, the raw materials mixing can produce the dust, the water smoke dust fall is at raw materials mixing fill top blowout water smoke, and the water smoke produces the dust to raw materials mixing process and adsorbs, realizes eliminating the dust that the raw materials allotment and produced.

4. The industrial residue masonry cement based on biomass fuel calcined clinker and the preparation method thereof according to claim 1 are characterized in that: the clinker is calcined and dedusted to prepare raw materials after the raw materials are blended, the raw materials are ground and homogenized to enter a calcination stage, the raw materials pass through a preheater, a decomposing furnace and a rotary kiln in the calcination stage, the clinker generated by calcination is cooled by a grate cooler, and the cooled clinker is stored;

the raw materials are conveyed to generate dust in the raw material grinding, raw material homogenizing and preheating processes, the dust passes through a dust collector, air with the dust is input into a treatment tower, water mist is sprayed out of the treatment tower to adsorb the dust, high-temperature gas generated by a preheater is conveyed to the raw material grinding stage, the high-temperature air is utilized, the dust is mixed in the discharged high-temperature air, after dust is reduced by the treatment tower, water condensed by the water mist also has temperature, high-temperature wastewater is conveyed to a waste heat power station, and waste heat energy is recycled;

the hot air generated in the cooling process of the grate cooler can flow back to the rotary kiln and the coal powder preparation process, so that the waste heat recovery utilization rate is improved.

5. The industrial residue masonry cement based on biomass fuel calcined clinker and the preparation method thereof according to claim 1 are characterized in that: in the cement grinding stage, clinker is stored and transmitted to cement grinding equipment from clinker, and a mixed material and gypsum are added in the cement grinding process, wherein the mixed material needs to be dried, and the gypsum needs to be crushed;

hot air generated by cooling of the grate cooler is introduced into the mixed material drying equipment, so that the heat is recycled, and the mixed material drying efficiency is accelerated;

dust generated in the processes of drying the mixed material, crushing gypsum and grinding cement is reduced by adopting water mist, the generated dust is effectively treated, the flying of the dust is reduced, direct contact with a cement body is reduced, and the cement is prevented from being condensed with water and being incapable of being used;

after the cement is ground, the cement finished product is stored, the stored cement finished product is packaged to be made into bulk cement, and dust generated in the cement storage and cement storage processes is reduced by adopting water mist to reduce dust flying.

6. The industrial residue masonry cement based on biomass fuel calcined clinker and the preparation method thereof according to claim 1 are characterized in that: the water mist dust settling equipment is composed of a circulating water system, a filtering system, an atomizing system and a power system, wherein the circulating water system recycles the sprayed water, and the dust particles in the water are removed by filtering of the filtering system, so that the atomizing spray head is prevented from being blocked;

the atomizing system is composed of a water pipe and an atomizing nozzle, the power system pumps water and injects the water pipe, the water is sprayed out through the atomizing nozzle, and the water mist is diffused in a dust raising range to adsorb dust, so that the dust pollution is reduced.

Technical Field

The invention relates to the technical field of cement production, in particular to industrial waste residue masonry cement based on biomass fuel calcined clinker and a preparation method thereof.

Background

Cement is an indispensable building material in modern building field, uses very extensively, and the quantity is great, possesses very important effect, and in cement production process, because the step of cement production is more, and the output is great, consequently can produce certain dust pollution in the cement production process, can produce harm to staff's healthy to influence the environmental protection index of cement production. With the wide application of biomass fuels, part of cement plants can adopt the biomass fuels as the fuels in the calcining stage, and other kinds of pollution wastes generated after the biomass fuels are combusted do not have good dust removal effect by adopting the existing pollution treatment mode.

Through mass search, the prior art is found, the publication number is CN104548765A, and a cement dust removal system is disclosed, which comprises a cement pit, a ventilating duct, a gas collecting hood, a cyclone dust collector inlet, a cyclone dust collector outlet, an ash bucket, a fan and a chimney; the cement pit is arranged on one side of the cyclone dust collector and is communicated with the gas-collecting hood through a ventilation pipeline; the gas-collecting hood is arranged at the outlet of the cement cellar, and one end of the gas-collecting hood is communicated with the inlet of the cyclone dust collector through a ventilation pipeline; an inlet and an outlet of the cyclone dust collector are arranged on two sides of the cyclone dust collector; the ash bucket is arranged at one end of the cyclone dust collector; the fan is arranged on one side of the cyclone dust collector and is connected with the chimney through a ventilation pipeline; the fan is arranged between the cyclone dust collector and the chimney; the cyclone dust collector greatly reduces occupational hazards in cement processing, has a good dust removal effect, protects the environment, and is easy to popularize and use.

In conclusion, in the cement production process, because the production procedures of cement production are more, dust is inevitably generated in the cement raw material, clinker and finished product transmission process, meanwhile, the raw material treatment of cement also generates dust, the generation range and the place of the dust are more, the large-range treatment is not facilitated, in the production process, part of redundant heat cannot be effectively utilized, white pollution is generated by direct discharge, and the environmental protection coefficient of cement production is reduced.

Disclosure of Invention

The invention aims to provide industrial waste residue masonry cement based on biomass fuel calcined clinker and a preparation method thereof, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the industrial waste residue masonry cement based on biomass fuel clinker calcination and the preparation method thereof comprise raw material and coal powder preparation dust removal, clinker calcination dust removal and cement grinding dust removal, wherein the cement production sequence comprises raw material and coal powder preparation, clinker calcination and cement grinding, the raw material and coal powder preparation dust removal and the cement grinding dust removal are both carried out by adopting a water mist dust fall method, the clinker calcination and storage are carried out by adopting a treatment tower to remove dust from dust gas, and high-temperature air is introduced into a waste heat power station to realize the recycling of heat.

Preferably, the raw material and coal powder preparation dedusting is divided into raw material preparation dedusting and coal powder preparation dedusting;

raw materials in the raw material preparation process are limestone, clay and iron ore, raw materials in the coal powder preparation process are raw coal, the limestone, the clay and the iron ore are crushed, homogenized and stored to prepare raw materials, water mist dust fall is arranged at a position where dust is generated in the crushing, homogenizing and storing processes, and the dust is adsorbed by the water mist to realize the dust fall;

the coal dust settling method is characterized in that raw coal is homogenized, transported and prepared in the coal powder preparation process, water mist dust settling is performed on the raw coal in the raw coal homogenizing, transporting and preparing processes, and water mist is adopted to perform dust settling on the raw coal dust, so that flying of the dust is reduced.

Preferably, lime stone raw materials, clay and iron ore use the conveyer belt to carry to raw materials allotment equipment after broken, homogenization and storage, and at lime stone raw materials, clay and iron ore allotment in-process, the raw materials mixing can produce the dust, the water smoke dust fall is at raw materials mixing bucket top blowout water smoke, and the water smoke produces the dust to raw materials mixing process and adsorbs, realizes eliminating the dust that the raw materials allotment produced.

Preferably, the clinker is calcined and dedusted to prepare raw materials after the raw materials are blended, the raw materials are ground and homogenized to enter a calcination stage, the raw materials pass through a preheater, a decomposing furnace and a rotary kiln in the calcination stage, the clinker generated by calcination is cooled by a grate cooler, and the cooled clinker is stored;

the raw materials are conveyed to generate dust in the raw material grinding, raw material homogenizing and preheating processes, the dust passes through a dust collector, air with the dust is input into a treatment tower, water mist is sprayed out of the treatment tower to adsorb the dust, high-temperature gas generated by a preheater is conveyed to the raw material grinding stage, the high-temperature air is utilized, the dust is mixed in the discharged high-temperature air, after dust is reduced by the treatment tower, water condensed by the water mist also has temperature, high-temperature wastewater is conveyed to a waste heat power station, and waste heat energy is recycled;

the hot air generated in the cooling process of the grate cooler can flow back to the rotary kiln and the coal powder preparation process, so that the waste heat recovery utilization rate is improved.

Preferably, in the cement grinding stage, clinker is stored and conveyed to cement grinding equipment from clinker, and a mixed material and gypsum are added in the cement grinding process, wherein the mixed material needs to be dried, and the gypsum needs to be crushed;

hot air generated by cooling of the grate cooler is introduced into the mixed material drying equipment, so that the heat is recycled, and the mixed material drying efficiency is accelerated;

dust generated in the processes of drying the mixed material, crushing gypsum and grinding cement is reduced by adopting water mist, the generated dust is effectively treated, the flying of the dust is reduced, direct contact with a cement body is reduced, and the cement is prevented from being condensed with water and being incapable of being used;

after the cement is ground, the cement finished product is stored, the stored cement finished product is packaged to be made into bulk cement, and dust generated in the cement storage and cement storage processes is reduced by adopting water mist to reduce dust flying.

Preferably, the water mist dust settling equipment consists of a circulating water system, a filtering system, an atomizing system and a power system, wherein the circulating water system recycles the sprayed water, and the dust particles in the water are removed by filtering of the filtering system, so that the atomizing spray head is prevented from being blocked;

the atomizing system is composed of a water pipe and an atomizing nozzle, the power system pumps water and injects the water pipe, the water is sprayed out through the atomizing nozzle, and the water mist is diffused in a dust raising range to adsorb dust, so that the dust pollution is reduced.

Compared with the prior art, the invention has the beneficial effects that: the invention adopts water mist dust removal to remove dust on the position where dust is generated in the stages of raw material and coal powder preparation and cement grinding, reduces the flying and generation of dust, ensures the health of workers, effectively recycles the redundant heat generated in the cooling stage of the grate cooler in the cement grinding stage, reduces the waste of resources, avoids white pollution caused by direct discharge of heat, realizes the cyclic utilization of heat by matching with the treatment tower and the waste heat power station in the clinker calcining stage, can improve the production environment of a cement plant, improves the environmental protection coefficient of the cement plant, and reduces the emission of pollutants.

Drawings

FIG. 1 is a schematic view of the pollution treatment process in the raw material and pulverized coal preparation stage of the present invention;

FIG. 2 is a schematic view of the process of the clinker calcination stage pollution treatment according to the present invention;

fig. 3 is a schematic view of the pollution treatment process in the cement grinding stage of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The invention provides four embodiments: a industrial waste residue masonry cement based on biomass fuel calcined clinker and a preparation method thereof comprise raw material and coal powder preparation dust removal, clinker calcination dust removal and cement grinding dust removal, wherein the cement production sequence comprises raw material and coal powder preparation, clinker calcination dust removal and cement grinding, and the raw material and coal powder preparation dust removal and the cement grinding dust removal are both carried out by adopting a water mist dust removal method; the clinker is calcined and stored by adopting a treatment tower to remove dust from dust gas, and high-temperature air is introduced into a waste heat power station to realize the recycling of heat; the fuel of the clinker calcining stage adopts biomass fuel, can replace part of fossil fuel, and reduces pollution.

The first embodiment is as follows:

referring to fig. 1, the dust removal for raw material and coal dust preparation is divided into raw material dust removal and coal dust removal;

raw materials in the process of raw material preparation are limestone, clay and iron ore, raw materials in the process of coal powder preparation are raw coal, the limestone, the clay and the iron ore are crushed, homogenized and stored to prepare raw materials, water mist dust fall is arranged at the position where dust is generated in the crushing, homogenizing and storing processes, and the dust is adsorbed by the water mist to realize the dust fall;

raw coal is homogenized, transported and prepared in the coal powder preparation process, water mist dust fall is performed on the raw coal in the raw coal homogenizing, transporting and preparing processes, and water mist is adopted to perform dust fall on the raw coal dust so as to reduce flying of the dust.

Limestone raw materials, clay and iron ore are after breakage, homogenization and storage, use the conveyer belt to carry to raw materials allotment equipment in, limestone raw materials, clay and iron ore allotment in-process, the raw materials mixes and can produce the dust, and the water smoke dust fall is at raw materials mixing fill top blowout water smoke, and the water smoke produces the dust to raw materials mixing process and adsorbs, realizes eliminating the dust that the raw materials allotment produced.

Example two:

referring to fig. 2, clinker is calcined and dedusted to prepare raw materials after raw materials are blended, the raw materials are ground and homogenized to enter a calcination stage, the raw materials pass through a preheater, a decomposing furnace and a rotary kiln in the calcination stage, the clinker generated by calcination is cooled by a grate cooler, and the cooled clinker is stored;

raw materials are conveyed to generate dust in the processes of raw material grinding, raw material homogenization and preheating, the dust passes through a dust collector, air with dust is input into a treatment tower, water mist is sprayed out of the treatment tower to adsorb the dust, high-temperature gas generated by a preheater is conveyed to the raw material grinding stage to utilize the high-temperature air, the dust is mixed in the discharged high-temperature air, after dust is reduced by the treatment tower, water condensed by the water mist also has temperature, high-temperature wastewater is conveyed to a waste heat power station, and waste heat energy is recycled;

the hot air generated in the cooling process of the grate cooler can flow back to the rotary kiln and the coal powder preparation process, so that the waste heat recovery utilization rate is improved.

Example three:

referring to fig. 3, in the cement grinding stage, clinker is stored and transmitted to the cement grinding equipment, and a mixed material and gypsum are added in the cement grinding process, wherein the mixed material needs to be dried, and the gypsum needs to be crushed;

hot air generated by cooling of the grate cooler is introduced into the mixed material drying equipment, so that the heat is recycled, and the mixed material drying efficiency is accelerated;

dust generated in the processes of drying the mixed materials, crushing gypsum and grinding cement is reduced by adopting water mist, the generated dust is effectively treated, the flying of the dust is reduced, direct contact with a cement body is reduced, and the cement is prevented from being condensed with water and being incapable of being used;

after the cement is ground, the cement finished product is stored, the stored cement finished product is packaged to be made into bulk cement, and dust generated in the cement storage and cement storage processes is reduced by adopting water mist to reduce dust, so that dust flying is reduced.

The excessive heat generated in the cooling stage of the grate cooler is effectively recycled, the waste of resources is reduced, white pollution caused by direct discharge of the heat is avoided, the heat is recycled by matching with a treatment tower and a waste heat power station in the clinker calcining stage, the production environment of a cement plant can be improved, the environmental protection coefficient of the cement plant is improved, and the emission of pollutants is reduced.

Example four:

the water mist dust settling equipment is composed of a circulating water system, a filtering system, an atomizing system and a power system, the circulating water system recycles sprayed water, and after water mist contacts dust particles, the water mist can be fused with the dust particles, so that the volume of the dust particles is increased, the dust particles can be rapidly deposited and reduced, dust is prevented from flying due to the flowing of air flow, the dust particles in the water are removed through the filtering of the filtering system, the atomizing nozzle is prevented from being blocked, the filtering system is composed of a booster pump and a filtering net, the filtering net can filter the dust particles in the deposition water, and the deposition water can be recycled;

the atomizing system is composed of a water pipe and an atomizing nozzle, water is pumped into the water pipe by the power system, the water is sprayed out through the atomizing nozzle, water mist is diffused in a dust raising range to adsorb dust, dust pollution is reduced, large-range dust removal is carried out on the position where the dust is generated in the raw material and coal powder preparation and cement grinding stages by water mist dust removal, flying and generation of the dust are reduced, and the health of workers is guaranteed.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.