CN111437683A - Industrial waste gas treatment method - Google Patents
Industrial waste gas treatment method Download PDFInfo
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- CN111437683A CN111437683A CN202010092419.XA CN202010092419A CN111437683A CN 111437683 A CN111437683 A CN 111437683A CN 202010092419 A CN202010092419 A CN 202010092419A CN 111437683 A CN111437683 A CN 111437683A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/07—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases in which combustion takes place in the presence of catalytic material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/14—Gaseous waste or fumes
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Abstract
The invention discloses a method for treating industrial waste gas, which comprises the following steps: the method comprises the steps of introducing generated industrial waste gas into a dust rotary separator, realizing gas-solid separation after rotary separation treatment, collecting obtained solid, treating the solid, introducing the separated gas into a combustion chamber, introducing the temperature in the combustion chamber to be 400-plus-500 ℃, adding a catalyst, releasing after combustion, introducing the combusted waste gas into a heat exchanger through a filter screen, reducing the temperature of the waste gas after heat exchange, releasing, introducing the cooled waste gas into an adsorption liquid, discharging the waste gas through the adsorption liquid, and releasing the waste gas into the air after passing through a waste gas adsorption material. According to the invention, the dust rotary separator is adopted to separate solid particles and waste gas in the waste gas, the solid and the waste gas are respectively treated, and after the waste gas is subjected to combustion treatment, adsorption by the adsorption liquid and adsorption by the adsorption material, harmful substances in the waste gas are effectively reduced, and the treatment effect of the waste gas is greatly improved.
Description
Technical Field
The invention relates to the technical field of waste gas treatment, in particular to a method for treating industrial waste gas.
Background
The industrial waste gas comprises organic waste gas and inorganic waste gas, the organic waste gas mainly comprises various hydrocarbons, alcohols, aldehydes, acids, ketones, amines and the like, and the inorganic waste gas mainly comprises sulfur oxides, nitrogen oxides, carbon oxides, halogens, compounds thereof and the like. China adopts a pollutant discharge control system aiming at atmospheric pollution. Organic waste gas is one of main atmospheric pollutants, can enter human bodies through respiratory tracts and skins, and causes temporary and permanent pathological changes to systems and organs such as breath, blood, liver and the like of people. When industrial waste gas is discharged, waste gas needs to be purified, and the existing waste gas treatment method cannot effectively remove harmful substances in the waste gas.
Disclosure of Invention
The invention provides a method for treating industrial waste gas, which aims to solve the problem that harmful substances in the waste gas cannot be effectively removed in the background art.
The invention provides a method for treating industrial waste gas, which comprises the following steps:
s1: introducing the generated industrial waste gas into a dust rotary separator, performing rotary separation treatment to realize gas-solid separation, collecting the obtained solid and treating the solid;
s2: introducing the separated gas into a combustion chamber, wherein the temperature in the combustion chamber is 400-500 ℃, adding a catalyst, and releasing after combustion;
s3: introducing the combusted waste gas into a heat exchanger after passing through a filter screen, and reducing the temperature release of the waste gas after heat exchange;
s4: then introducing the cooled waste gas into an adsorption liquid, and discharging the waste gas through the adsorption liquid;
s5: the exhaust gas is released into the air after passing through the exhaust gas adsorbing material.
Preferably, the catalyst in S2 is vanadium pentoxide and vegetable water type high silicon.
Preferably, the preparation step of the adsorption solution in S4 is as follows:
a. pouring the magnesium chloride solid and the calcium chloride solid into warm water, and stirring by a stirring mechanism until the magnesium chloride solid and the calcium chloride solid are completely dissolved;
b. adding dilute hydrochloric acid into the mixed solution, stirring again, and mixing the dilute hydrochloric acid with the solution;
c. and detecting the pH value of the mixed solution by using a pH detector, and continuously adding dilute hydrochloric acid to make the mixed solution acidic, thereby obtaining the waste gas adsorption solution.
Preferably, the mass ratio of the magnesium chloride solid to the calcium chloride solid is 1: 1.
Preferably, the preparation step of the exhaust gas adsorbing material in S5 is as follows:
(1) placing a silicon-containing aluminum material and an alkaline activator in a running-in device to prepare polymer slurry, adding a foaming agent and a foam stabilizer into the polymer slurry, and stirring to obtain a polymeric material;
(2) dissolving soluble metal salt in a solvent, stirring until the soluble metal salt is dissolved, transferring the solution to a stainless steel sealed reaction kettle, reacting for 15-20h at the temperature of 80-160 ℃, cooling, washing and drying to obtain a material framework;
(3) and coating the polymeric material on the material framework, putting the material framework into a drying box for drying treatment, and drying to obtain the gas adsorption material.
Preferably, the drying treatment step:
(1) putting the coated material framework into a drying box, and adjusting the temperature of the drying box to be 70-80 ℃ and the drying time to be 40-50 min;
(2) adjusting the temperature of the drying box to 50-60 ℃ and the drying time to 30-40 min;
(3) the temperature of the drying box is adjusted to be 30-40 ℃, and the drying time is 1-2 h.
The industrial waste gas treatment method provided by the invention has the beneficial effects that:
solid particles and waste gas in the dust rotary separator separation waste gas are treated with the waste gas respectively, the waste gas is treated through combustion, harmful gas is fully oxidized, adsorption liquid adsorbs the harmful substances, the harmful substances are removed through sedimentation, and after the adsorption materials adsorb, the harmful substances in the waste gas are effectively reduced, the treatment effect of the waste gas is greatly improved, and the waste gas emission cannot pollute the air.
Detailed Description
The invention is further illustrated by the following examples.
Example 1
The invention provides a method for treating industrial waste gas, which comprises the following steps:
s1: introducing the generated industrial waste gas into a dust rotary separator, performing rotary separation treatment to realize gas-solid separation, collecting the obtained solid and treating the solid;
s2: introducing the separated gas into a combustion chamber, wherein the temperature in the combustion chamber is 400 ℃, adding a catalyst to accelerate the reaction speed of the waste gas, wherein the catalyst is vanadium pentoxide and vegetable water type high silicon, and is released after combustion;
s3: the burnt waste gas is led into a heat exchanger after passing through a filter screen, so that the utilization rate of heat is improved, and the temperature release of the waste gas is reduced after heat exchange;
s4: and then, introducing the cooled waste gas into adsorption liquid, discharging the waste gas through the adsorption liquid, reacting the waste gas with the adsorption liquid, and removing harmful substances, wherein the preparation step of the adsorption liquid comprises the following steps:
a. pouring magnesium chloride solid and calcium chloride solid into warm water, wherein the mass ratio of the magnesium chloride solid to the calcium chloride solid is 1:1, and stirring by a stirring mechanism until the magnesium chloride solid and the calcium chloride solid are completely dissolved;
b. adding dilute hydrochloric acid into the mixed solution, stirring again, and mixing the dilute hydrochloric acid with the solution;
c. detecting the pH value of the mixed solution by using a pH detector, and continuously adding dilute hydrochloric acid to make the mixed solution acidic, thereby obtaining a waste gas adsorption solution;
s5: after the waste gas passes through the waste gas adsorption material, the waste gas is released into the air, and the preparation step of the waste gas adsorption material comprises the following steps:
(1) placing a silicon-containing aluminum material and an alkaline activator in a running-in device to prepare polymer slurry, adding a foaming agent and a foam stabilizer into the polymer slurry, and stirring to obtain a polymeric material;
(2) dissolving soluble metal salt in a solvent, stirring until the soluble metal salt is dissolved, transferring the solution to a stainless steel sealed reaction kettle, reacting at the temperature of 80 ℃ for 15 hours, cooling, washing and drying to obtain a material framework;
(3) coating a polymeric material on a material framework, putting the material framework into a drying box for drying treatment, and drying to obtain a gas adsorption material, wherein the drying treatment step comprises the following steps:
(1) putting the coated material framework into a drying box, and adjusting the temperature of the drying box to be 70 ℃ and the drying time to be 40 min;
(2) adjusting the temperature of the drying box to 50 ℃ and the drying time to 30 min;
(3) the temperature of the drying box is adjusted to be 30 ℃, and the drying time is 1 h.
Example 2
The invention provides a method for treating industrial waste gas, which comprises the following steps:
s1: introducing the generated industrial waste gas into a dust rotary separator, performing rotary separation treatment to realize gas-solid separation, collecting the obtained solid and treating the solid;
s2: introducing the separated gas into a combustion chamber, wherein the temperature in the combustion chamber is 420 ℃, adding a catalyst to accelerate the reaction speed of the waste gas, wherein the catalyst is vanadium pentoxide and vegetable water type high silicon, and is released after combustion;
s3: the burnt waste gas is led into a heat exchanger after passing through a filter screen, so that the utilization rate of heat is improved, and the temperature release of the waste gas is reduced after heat exchange;
s4: and then, introducing the cooled waste gas into adsorption liquid, discharging the waste gas through the adsorption liquid, reacting the waste gas with the adsorption liquid, and removing harmful substances, wherein the preparation step of the adsorption liquid comprises the following steps:
a. pouring magnesium chloride solid and calcium chloride solid into warm water, wherein the mass ratio of the magnesium chloride solid to the calcium chloride solid is 1:1, and stirring by a stirring mechanism until the magnesium chloride solid and the calcium chloride solid are completely dissolved;
b. adding dilute hydrochloric acid into the mixed solution, stirring again, and mixing the dilute hydrochloric acid with the solution;
c. detecting the pH value of the mixed solution by using a pH detector, and continuously adding dilute hydrochloric acid to make the mixed solution acidic, thereby obtaining a waste gas adsorption solution;
s5: after the waste gas passes through the waste gas adsorption material, the waste gas is released into the air, and the preparation step of the waste gas adsorption material comprises the following steps:
(1) placing a silicon-containing aluminum material and an alkaline activator in a running-in device to prepare polymer slurry, adding a foaming agent and a foam stabilizer into the polymer slurry, and stirring to obtain a polymeric material;
(2) dissolving soluble metal salt in a solvent, stirring until the soluble metal salt is dissolved, transferring the solution to a stainless steel sealed reaction kettle, reacting at 100 ℃ for 16 hours, cooling, washing and drying to obtain a material framework;
(3) coating a polymeric material on a material framework, putting the material framework into a drying box for drying treatment, and drying to obtain a gas adsorption material, wherein the drying treatment step comprises the following steps:
(1) putting the coated material framework into a drying box, and adjusting the temperature of the drying box to 72 ℃ and the drying time to 42 min;
(2) adjusting the temperature of the drying box to 52 ℃ and the drying time to 32 min;
(3) the temperature of the drying box is adjusted to be 32 ℃, and the drying time is 1.2 h.
Example 3
The invention provides a method for treating industrial waste gas, which comprises the following steps:
s1: introducing the generated industrial waste gas into a dust rotary separator, performing rotary separation treatment to realize gas-solid separation, collecting the obtained solid and treating the solid;
s2: introducing the separated gas into a combustion chamber, wherein the temperature in the combustion chamber is 440 ℃, adding a catalyst to accelerate the reaction speed of the waste gas, wherein the catalyst is vanadium pentoxide and vegetable water type high silicon, and is released after combustion;
s3: the burnt waste gas is led into a heat exchanger after passing through a filter screen, so that the utilization rate of heat is improved, and the temperature release of the waste gas is reduced after heat exchange;
s4: and then, introducing the cooled waste gas into adsorption liquid, discharging the waste gas through the adsorption liquid, reacting the waste gas with the adsorption liquid, and removing harmful substances, wherein the preparation step of the adsorption liquid comprises the following steps:
a. pouring magnesium chloride solid and calcium chloride solid into warm water, wherein the mass ratio of the magnesium chloride solid to the calcium chloride solid is 1:1, and stirring by a stirring mechanism until the magnesium chloride solid and the calcium chloride solid are completely dissolved;
b. adding dilute hydrochloric acid into the mixed solution, stirring again, and mixing the dilute hydrochloric acid with the solution;
c. detecting the pH value of the mixed solution by using a pH detector, and continuously adding dilute hydrochloric acid to make the mixed solution acidic, thereby obtaining a waste gas adsorption solution;
s5: after the waste gas passes through the waste gas adsorption material, the waste gas is released into the air, and the preparation step of the waste gas adsorption material comprises the following steps:
(1) placing a silicon-containing aluminum material and an alkaline activator in a running-in device to prepare polymer slurry, adding a foaming agent and a foam stabilizer into the polymer slurry, and stirring to obtain a polymeric material;
(2) dissolving soluble metal salt in a solvent, stirring until the soluble metal salt is dissolved, transferring the solution to a stainless steel sealed reaction kettle, reacting at 120 ℃ for 17 hours, cooling, washing and drying to obtain a material framework;
(3) coating a polymeric material on a material framework, putting the material framework into a drying box for drying treatment, and drying to obtain a gas adsorption material, wherein the drying treatment step comprises the following steps:
(1) putting the coated material framework into a drying box, and adjusting the temperature of the drying box to be 74 ℃ and the drying time to be 44 min;
(2) adjusting the temperature of the drying box to 54 ℃ and the drying time to 34 min;
(3) the temperature of the drying box is adjusted to be 44 ℃, and the drying time is 1.4 h.
Example 4
The invention provides a method for treating industrial waste gas, which comprises the following steps:
s1: introducing the generated industrial waste gas into a dust rotary separator, performing rotary separation treatment to realize gas-solid separation, collecting the obtained solid and treating the solid;
s2: introducing the separated gas into a combustion chamber, wherein the temperature in the combustion chamber is 470 ℃, adding a catalyst to accelerate the reaction speed of the waste gas, wherein the catalyst is vanadium pentoxide and vegetable water type high silicon, and is released after combustion;
s3: the burnt waste gas is led into a heat exchanger after passing through a filter screen, so that the utilization rate of heat is improved, and the temperature release of the waste gas is reduced after heat exchange;
s4: and then, introducing the cooled waste gas into adsorption liquid, discharging the waste gas through the adsorption liquid, reacting the waste gas with the adsorption liquid, and removing harmful substances, wherein the preparation step of the adsorption liquid comprises the following steps:
a. pouring magnesium chloride solid and calcium chloride solid into warm water, wherein the mass ratio of the magnesium chloride solid to the calcium chloride solid is 1:1, and stirring by a stirring mechanism until the magnesium chloride solid and the calcium chloride solid are completely dissolved;
b. adding dilute hydrochloric acid into the mixed solution, stirring again, and mixing the dilute hydrochloric acid with the solution;
c. detecting the pH value of the mixed solution by using a pH detector, and continuously adding dilute hydrochloric acid to make the mixed solution acidic, thereby obtaining a waste gas adsorption solution;
s5: after the waste gas passes through the waste gas adsorption material, the waste gas is released into the air, and the preparation step of the waste gas adsorption material comprises the following steps:
(1) placing a silicon-containing aluminum material and an alkaline activator in a running-in device to prepare polymer slurry, adding a foaming agent and a foam stabilizer into the polymer slurry, and stirring to obtain a polymeric material;
(2) dissolving soluble metal salt in a solvent, stirring until the soluble metal salt is dissolved, transferring the solution to a stainless steel sealed reaction kettle, reacting at 140 ℃ for 18 hours, cooling, washing and drying to obtain a material framework;
(3) coating a polymeric material on a material framework, putting the material framework into a drying box for drying treatment, and drying to obtain a gas adsorption material, wherein the drying treatment step comprises the following steps:
(1) putting the coated material framework into a drying box, and adjusting the temperature of the drying box to 77 ℃ for 47 min;
(2) adjusting the temperature of the drying box to 57 ℃, and drying for 37 min;
(3) the temperature of the drying box is adjusted to be 37 ℃, and the drying time is 1.7 h.
Example 5
The invention provides a method for treating industrial waste gas, which comprises the following steps:
s1: introducing the generated industrial waste gas into a dust rotary separator, performing rotary separation treatment to realize gas-solid separation, collecting the obtained solid and treating the solid;
s2: introducing the separated gas into a combustion chamber, wherein the temperature in the combustion chamber is 500 ℃, adding a catalyst to accelerate the reaction speed of the waste gas, wherein the catalyst is vanadium pentoxide and vegetable water type high silicon, and is released after combustion;
s3: the burnt waste gas is led into a heat exchanger after passing through a filter screen, so that the utilization rate of heat is improved, and the temperature release of the waste gas is reduced after heat exchange;
s4: and then, introducing the cooled waste gas into adsorption liquid, discharging the waste gas through the adsorption liquid, reacting the waste gas with the adsorption liquid, and removing harmful substances, wherein the preparation step of the adsorption liquid comprises the following steps:
a. pouring magnesium chloride solid and calcium chloride solid into warm water, wherein the mass ratio of the magnesium chloride solid to the calcium chloride solid is 1:1, and stirring by a stirring mechanism until the magnesium chloride solid and the calcium chloride solid are completely dissolved;
b. adding dilute hydrochloric acid into the mixed solution, stirring again, and mixing the dilute hydrochloric acid with the solution;
c. detecting the pH value of the mixed solution by using a pH detector, and continuously adding dilute hydrochloric acid to make the mixed solution acidic, thereby obtaining a waste gas adsorption solution;
s5: after the waste gas passes through the waste gas adsorption material, the waste gas is released into the air, and the preparation step of the waste gas adsorption material comprises the following steps:
(1) placing a silicon-containing aluminum material and an alkaline activator in a running-in device to prepare polymer slurry, adding a foaming agent and a foam stabilizer into the polymer slurry, and stirring to obtain a polymeric material;
(2) dissolving soluble metal salt in a solvent, stirring until the soluble metal salt is dissolved, transferring the solution to a stainless steel sealed reaction kettle, reacting at 160 ℃ for 20 hours, cooling, washing and drying to obtain a material framework;
(3) coating a polymeric material on a material framework, putting the material framework into a drying box for drying treatment, and drying to obtain a gas adsorption material, wherein the drying treatment step comprises the following steps:
(1) putting the coated material framework into a drying box, and adjusting the temperature of the drying box to 80 ℃ for 50 min;
(2) adjusting the temperature of the drying box to 60 ℃, and drying for 40 min;
(3) the temperature of the drying box is adjusted to 40 ℃, and the drying time is 2 h.
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.
Claims (6)
1. A method for treating industrial waste gas is characterized by comprising the following steps:
s1: introducing the generated industrial waste gas into a dust rotary separator, performing rotary separation treatment to realize gas-solid separation, collecting the obtained solid and treating the solid;
s2: introducing the separated gas into a combustion chamber, wherein the temperature in the combustion chamber is 400-500 ℃, adding a catalyst, and releasing after combustion;
s3: introducing the combusted waste gas into a heat exchanger after passing through a filter screen, and reducing the temperature release of the waste gas after heat exchange;
s4: then introducing the cooled waste gas into an adsorption liquid, and discharging the waste gas through the adsorption liquid;
s5: the exhaust gas is released into the air after passing through the exhaust gas adsorbing material.
2. The method for treating industrial waste gas according to claim 1, wherein the catalyst in S2 is vanadium pentoxide and vegetable water type high silicon.
3. The method for treating industrial waste gas according to claim 1, wherein the step of preparing the adsorption solution in S4 comprises:
a. pouring the magnesium chloride solid and the calcium chloride solid into warm water, and stirring by a stirring mechanism until the magnesium chloride solid and the calcium chloride solid are completely dissolved;
b. adding dilute hydrochloric acid into the mixed solution, stirring again, and mixing the dilute hydrochloric acid with the solution;
c. and detecting the pH value of the mixed solution by using a pH detector, and continuously adding dilute hydrochloric acid to make the mixed solution acidic, thereby obtaining the waste gas adsorption solution.
4. The method for treating industrial waste gas according to claim 3, wherein the mass ratio of the magnesium chloride solid to the calcium chloride solid is 1: 1.
5. The method for treating industrial waste gas according to claim 1, wherein the step of preparing the waste gas adsorbing material in S5 comprises:
(1) placing a silicon-containing aluminum material and an alkaline activator in a running-in device to prepare polymer slurry, adding a foaming agent and a foam stabilizer into the polymer slurry, and stirring to obtain a polymeric material;
(2) dissolving soluble metal salt in a solvent, stirring until the soluble metal salt is dissolved, transferring the solution to a stainless steel sealed reaction kettle, reacting for 15-20h at the temperature of 80-160 ℃, cooling, washing and drying to obtain a material framework;
(3) and coating the polymeric material on the material framework, putting the material framework into a drying box for drying treatment, and drying to obtain the gas adsorption material.
6. The method for treating industrial waste gas according to claim 5, wherein the drying treatment step comprises:
(1) putting the coated material framework into a drying box, and adjusting the temperature of the drying box to be 70-80 ℃ and the drying time to be 40-50 min;
(2) adjusting the temperature of the drying box to 50-60 ℃ and the drying time to 30-40 min;
(3) the temperature of the drying box is adjusted to be 30-40 ℃, and the drying time is 1-2 h.
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