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A process for purifying flue gas from spray granulation

A spray granulation and process technology, applied in the direction of gas treatment, dispersed particle separation, air quality improvement, etc., can solve the problems of a large amount of waste, complex process parameters, waste of resources, etc., to improve the adhesion effect, save the operation process, The effect of extending the service life

Active Publication Date: 2021-11-26
内蒙古阜丰生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For the research on flue gas from spray granulation, the applicant has elaborated more in the previous patented technology. A treatment method for cooling, deodorizing, desulfurizing and denitrifying tail gas from spraying granulation, comprising the following steps: the tail gas from spraying granulation first passes through a Venturi spray tower and an electrostatic precipitator to cool down and remove dust, then passes through a plasma reactor for deodorization, and then passes through an ozone Generator, and finally into the reactor equipped with adsorbent for desulfurization and denitrification treatment, after the treatment, it is discharged; the adsorbent is prepared from a variety of materials, which has a good adsorption effect; but the regeneration ability of the adsorbent is poor , a large amount of waste will be generated after use, resulting in a waste of resources
The applicant's previous patent technology "CN201410586080, a method for removing harmful gases in boiler flue gas" discloses a method for jointly treating harmful gases in flue gas by using chemical agents and biological bacteria agents. This method requires the use of two kinds of agents, and the biological bacteria Four kinds of microorganisms are used in the agent for compatibility, which is easy to cause pollution, and the process parameters are relatively complicated, which is difficult for ordinary enterprises to master
In view of the above research results, the applicant found that there are still some defects in the actual operation process, such as many bacterial strains, and the cultivation process is cumbersome. volume still needs to be increased

Method used

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  • A process for purifying flue gas from spray granulation
  • A process for purifying flue gas from spray granulation

Examples

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Effect test

Embodiment 1

[0027] A process for purifying flue gas from shotcrete granulation, comprising the steps of:

[0028] First, it is sprayed and washed through the spray washing tower, and the temperature is lowered to 35°C, and then it enters the reaction chamber equipped with microbial preparations for flue gas purification treatment. After the treatment is completed, it is discharged;

[0029] The microbial preparation is prepared according to the following process:

[0030] 1) Preparation of adsorption carrier: put the straw into the pulverizer, and pass through a 100-mesh sieve to obtain straw powder; , attapulgite and phosphoric acid solution were added to the reaction kettle according to the mass ratio of 5:10:1:12, stirred at 300rpm for 10min, and then entered into the drum granulator for granulation, the particle size was controlled to be 2mm, and then placed under the condition of 100°C , drying for 30min to obtain an adsorption carrier; the concentration of the phosphoric acid solut...

Embodiment 2

[0038] A process for purifying flue gas from shotcrete granulation, comprising the steps of:

[0039] First, spray and wash through the spray washing tower, lower the temperature to 33°C, and then enter the reaction chamber equipped with microbial preparations for flue gas purification treatment. After the treatment is completed, it is discharged;

[0040] The microbial preparation is prepared according to the following process:

[0041] 1) Preparation of adsorption carrier: put the straw into the pulverizer, and pass through a 100-mesh sieve to obtain straw powder; , attapulgite and phosphoric acid solution were added to the reaction kettle according to the mass ratio of 5:10:1:12, stirred at 300rpm for 10min, and then entered into the drum granulator for granulation, the particle size was controlled to be 2-3mm, and then placed at 100°C Under conditions, dry for 30 minutes to obtain an adsorption carrier; the concentration of the phosphoric acid solution is 0.1mol / L; the pa...

Embodiment 3

[0049] The spray granulation flue gas from the spray granulation workshop in Fufeng, Inner Mongolia was selected for treatment. The composition of the tail gas after spraying is as follows: H 2 S is 146.7mg / Nm 3 , SO 2 139.4mg / Nm 3 , NOx is 167.1mg / Nm 3 , the temperature is 33℃, and the space velocity is 5000h -1 ;

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Abstract

The invention belongs to a process for purifying flue gas from spraying and granulation, which uses a microbial preparation, and the microbial preparation is prepared according to the following steps: the mass ratio of the adsorption carrier and the composite bacterial liquid is 3-4:2-3 Stir and mix, culture at 30°C for 6-18h, and then dry at a drying temperature of 15-20°C, with a water content of 6-10wt% after drying, and pack to get ready. The adsorption carrier of the present invention has good adsorption effect on bacteria, good synergistic effect among various bacterial strains, and correspondingly improved effect of purifying flue gas from spraying and granulation.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a process for purifying flue gas from spraying and granulation. Background technique [0002] Spray granulation is a method of preparing fine particles directly from solution or slurry by means of evaporation, including two processes of spraying and drying. The slurry is first sprayed into mist droplets, and after the water is evaporated and taken away by the hot air, the solid phase in the droplets aggregates into dry particles. For the preparation of fine particles with an average particle size of tens of microns to hundreds of microns from micron or submicron ultrafine particles, spray granulation is almost the only effective method. The prepared particles are approximately spherical and have a certain particle size distribution. The entire granulation process is carried out in a closed system without dust and impurity pollution. Therefore, this ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/84B01D53/85C12N1/20C12R1/265C12R1/025C12R1/01
CPCB01D53/84B01D53/85B01D2251/95B01D2258/0283C12N1/20Y02A50/20
Inventor 王峰卢松王皓王文强王斌杜鹏
Owner 内蒙古阜丰生物科技有限公司
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