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Biological agent for removing odors of slurry-spraying granulation tail gas

A biological agent and spray granulation technology, applied in the biological field, can solve the problems of poor regeneration ability of adsorbent, large amount of waste, complicated process parameters, etc., and achieve the reduction of enterprise burden, low cost of carrier raw materials, and simple operation process parameters Effect

Pending Publication Date: 2019-07-05
许传高
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The applicant's previous patented technology "201610508054, a treatment method for cooling, deodorizing, desulfurizing and denitrifying tail gas from spray granulation" discloses a treatment method for cooling, deodorizing, desulfurizing and denitrifying tail gas from spray granulation, including the following steps: The tail gas first passes through the Venturi spray tower and electrostatic precipitator to cool down and remove dust, then passes through the plasma reactor for deodorization, then passes through the ozone generator, and finally enters the reactor equipped with adsorbent for desulfurization and denitrification treatment. After the treatment, it is discharged ; Among them, the adsorbent is prepared from a variety of materials, which has a good adsorption effect; but the regeneration ability of the adsorbent is poor, and a large amount of waste will be generated after use, resulting in a waste of resources
The applicant's previous patented technology "201410586080, a method for removing harmful gases from 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 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

Method used

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  • Biological agent for removing odors of slurry-spraying granulation tail gas

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A biological preparation for removing the peculiar smell of spray granulation tail gas, which is prepared according to the following steps:

[0030] Step 1) put the straw into the pulverizer, and pass through a 100-mesh sieve after crushing to obtain straw powder; put the slag into the pulverizer, pass through a 50-mesh sieve after crushing, and obtain the slag powder; Calcium, clay and phosphoric acid solution were added to the reaction kettle according to the mass ratio of 4:10:2:1:15, stirred at 300rpm for 15min, and then entered into the drum granulator for granulation, and the particle size was controlled to be 1mm, and then placed at 95°C , and dried for 1 hour to obtain an adsorption carrier; the concentration of the phosphoric acid solution was 0.1mol / L; the particle diameters of the calcium fluoride and clay were 100 mesh;

[0031] Step 2) Trichoderma reesei ATCC56765 seed liquid (1 × 10 8 cfu / ml) according to the inoculation amount of 6% volume ratio, transfe...

Embodiment 2

[0034] A biological preparation for removing the peculiar smell of spray granulation tail gas, which is prepared according to the following steps:

[0035] Step 1) put the straw into the pulverizer, and pass through a 100-mesh sieve after crushing to obtain straw powder; put the slag into the pulverizer, pass through a 50-mesh sieve after crushing, and obtain the slag powder; Calcium, clay and phosphoric acid solution were added to the reaction kettle according to the mass ratio of 7:15:3:2:20, stirred at 300rpm for 15min, and then entered into the drum granulator for granulation, the particle size was controlled to be 1mm, and then placed at 95°C , dried for 1 hour to obtain an adsorption carrier; the concentration of the phosphoric acid solution was 0.1mol / L; the particle size of the calcium fluoride and clay was 100 mesh;

[0036] Step 2) Trichoderma reesei ATCC56765 seed liquid (1 × 10 8 cfu / ml) according to the inoculation amount of 6% volume ratio, transferred to the fe...

Embodiment 3

[0039] The exhaust gas from the spraying and granulation workshop in Fufeng was selected for treatment. The composition of the exhaust gas after spraying is as follows: H 2 S is 112mg / Nm 3 , SO 2 127g / Nm 3 , NOx is 109mg / Nm 3 , the temperature is 35℃, the space velocity is 5000h -1 ; Then enter the reaction chamber equipped with biological agents for tail gas odor treatment, the treatment time is 60min;

[0040] Set up the control group: control group 1: only use carrier, do not add compound fermentation liquid, the rest is the same as embodiment 1; control group 2: adopt conventional activated carbon adsorbent; control group 3: use diatomite as the carrier, and the rest are the same as embodiment 1 . See Table 1 for details:

[0041] group h 2 S (mg / Nm 3 )

[0042] The present invention adsorbs the tail gas through the adsorption carrier, and then removes the pollutants in the tail gas through a microbial reaction, so that the adsorption carrier can be e...

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Abstract

The invention belongs to the field of biotechnology and discloses a biological agent for removing odors of slurry-spraying granulation tail gas. The biological agent is prepared according to the following steps: stirring and mixing a compound fermentation broth and an adsorption carrier in a mass ratio being (3-5):(5-7), then, performing drying at the drying temperature of 22 DEG C until the moisture content is 10wt% after drying, and carrying out packaging to obtain the biological agent. The adsorption carrier of the biological agent is prepared from main raw materials of slag and straw to adsorb odors of tail gas, and the adsorbed tail gas can be absorbed and utilized by strains in the biological agent, so that the purpose of removing the odors of the tail gas is achieved.

Description

technical field [0001] The invention belongs to the field of biotechnology, and in particular relates to a biological preparation for removing the peculiar smell of spray granulation tail gas. Background technique [0002] Spray granulation is to spray the water in the slurry (mixture, solution and solute) (the general name of vaporizable liquid) into the equipment, and use the method of heating and pumping to vaporize and separate the water in the slurry Finally, the process in which the remaining solids that will not gasify (under certain conditions) form granules is called spray granulation. [0003] The compound fertilizer workshop uses spray granulation technology in the process of producing compound fertilizer from amino acid waste liquid. The components in the tail gas are relatively complex, mainly including floating dust, dust and fine compound fertilizer particles. The main components of the gas are coal-burning. A large amount of poisonous and pungent gas comes o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N1/14C12N1/20C12N11/02C12N11/14B01D53/84B01J2/02C12R1/885C12R1/01C12R1/07
CPCC12N1/14C12N1/20C12N11/02C12N11/14B01D53/84B01J2/02B01D2258/02Y02A50/20
Inventor 赵兰坤赵凤良徐太海许传高钮惺凯
Owner 许传高
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