Odor exhaust gas treatment equipment 1

Exhaust gas absorption device

1、 Briefly describe

The CT series exhaust gas absorption device is designed and manufactured by our company based on the production experience of similar products at home and abroad.

This series of equipment has a complete system design, complete supporting equipment, and high purification efficiency. Being in a leading position domestically. It is widely used in industries such as petroleum, chemical, rubber, paint, coating, printing, etc., and can purify all emissions of benzene and other organic waste gases. It can effectively purify the environment, eliminate pollution, improve working conditions, ensure the health of workers, and recycle organic solvents to reduce production costs.

This series of devices has a compact structure, small footprint, simple management and maintenance, and safe operation.

This product has been finalized in four specifications (if it is smaller or larger than this specification, it can be designed separately): CT3000A/B, CT-5000A/B, CT7000A/B, CT9000A/B (with processing air volumes of 3000, 5000, 7000, 9000m3/h respectively), divided into eight types A and B. Type A is a single tank series, suitable for intermittent adsorption and regeneration; Type B is a dual tank series suitable for continuous adsorption and regeneration.

3、 Principle and process flow of adsorption purification

1. Adsorption:

Organic waste gas is filtered to remove solid particulate matter and enters the adsorption tank from top to bottom. Organic matter is captured, adsorbed, and concentrated by activated carbon, and purified air is discharged into the atmosphere through the main fan at the bottom of the tank.

2. Desorption

When the adsorption of organic matter by activated carbon reaches saturation, stop inhaling organic waste gas. Steam is blown upwards through the activated carbon bed to remove organic matter from the activated carbon, i.e. desorption. The activated carbon in the tank is regenerated to restore its activity.

3. Hot air drying and cooling:

After steam desorption, about 80-90% of the steam condensate remains in the activated carbon layer, filling the pores of the activated carbon and reducing its activity. Therefore, hot air is introduced to dry the carbon layer. Then close the steam valve, introduce ambient temperature air, cool to around 25 ℃, and restore the activated carbon to its original state for recycling.

4. Organic solvent recovery:

By utilizing the high dew point temperature of organic solvents, a mixture of steam and organic solvents is introduced into a condenser for condensation. The condensed liquid enters the separator through a drain valve and is separated and recovered by taking advantage of the lighter weight of the solvent compared to water.

5. Condensed water purification:

To ensure the cleanliness of the condensed water and avoid the discharge of organic solvents into the water, compressed air is introduced into the separated water in the separator to fully release the organic solvents in the water. The air containing organic matter expelled by compressed air is returned to the exhaust gas system and re adsorbed. The purified condensed water is discharged into the sewer.

6. Continuous adsorption measures:

In a continuous production factory, the adsorption system also needs to work continuously accordingly. In the design of the exhaust gas purification system, the dual tank series can be selected for alternating continuous use of adsorption and regeneration.

7. Regeneration cycle:

The regeneration cycle should be determined based on the concentration of harmful gases in the purified exhaust gas. When the concentration of harmful gases approaches the excessive value, adsorption should be stopped and regeneration should be carried out. During the initial working stage of the system, it is necessary to timely measure the concentration of harmful gases at the exhaust outlet in order to grasp the reasonable adsorption and regeneration cycle.

Waste gas purification tower

1、 Principle and Structure:

The equipment itself includes a body, a filling layer, a defogging layer, a circulating sprinkler pipeline, and a circulating water tank.

2、 Scope of application:

Electronic industry, semiconductor manufacturing industry, PCB manufacturing industry, LCD manufacturing industry, steel and metal industry, electroplating and metal surface treatment industry, acid washing process, dyes, pharmaceuticals, chemical industry, deodorization, removal of combustion exhaust gas SO and treatment of other water-soluble air pollutants

3、 Introduction to Exhaust Gas Washing Process:

The basic principle is to use the contact between gas and liquid to transfer pollutants from the gas to the liquid, and then separate the clean gas from the contaminated liquid to achieve the goal of clean air.

After the particulate pollutants in the airflow come into contact with the washing solution, droplets or liquid films diffuse and attach to the particles in the airflow, or humidify the particles, allowing them to achieve separation and removal through the effects of gravity, inertia, and other forces. Gaseous pollutants are transported into the washing liquid through phenomena such as turbulence, molecular diffusion, and chemical reactions to achieve separation from the incoming gas. And chemical substances can be added to the washing solution to control the presence of odorous substances through absorption.

The exhaust gas is treated through a packed scrubbing tower using gas-liquid reverse absorption method, where the liquid is sprayed downwards from the top of the tower in the form of mist (or small water droplets). The exhaust gas is transported from the bottom of the tower (reverse flow) to achieve gas-liquid contact. This processing method can cool the exhaust gas temperature, regulate the gas, and remove particles. After undergoing defogging treatment (MIST ELIMINATOR), it is discharged into the atmosphere.

scope of application

CT series waste gas purification towers are widely used in the tail gas, waste gas, tail gas (such as hydrogen fluoride, sulfur dioxide, hydrogen chloride, chlorine, hydrogen sulfide, nitrogen oxides, various acid mist, etc.), washing, spraying, water washing, absorption, neutralization, foam, drying, degumming, demisting, treatment, purification towers and other purification systems in the production process of chemical, pharmaceutical, petroleum and other industries. They are advanced, reasonable, novel, fully separated from the vapor and liquid, fully absorbed, with large absorption and purification area of the same cross section, and have better effect. According to the national Emission Standard of Air Pollutants (GB16297-1996), our company uses water washing, filler, cyclone, organic adsorption, absorption and purification for different media and more advanced dynamic wave absorption purification system, the purification rate can reach 80%~99.8% according to different requirements. Absorption and purification treatment of exhaust gas to meet emission standards. Specifications and technical indicators

Industrial waste gas and flue gas treatment

Organic waste gas is an important pollutant present in various industries, and treatment methods include condensation, direct combustion, catalytic combustion, activated carbon adsorption, absorption liquid absorption, etc. Our company has developed and produced activated carbon and carbon fiber adsorption devices with high purification efficiency (over 98%), easy regeneration, small equipment footprint, corrosion resistance, easy maintenance, and no secondary pollution. They are particularly suitable for the purification treatment of high concentration waste gas.

The types of gases that can be recovered include: benzene, toluene, xylene, chlorinated hydrocarbons, ketones, alcohols, ammonia, methyl mercaptan, hydrogen sulfide, dimethyl sulfide, trimethylamine and other organic solvents. It can also handle various organic waste gases and odorous gases separately, and be applied to spray painting mist purification, welding smoke treatment, etc.

Application areas: printing, painting, rubber, plastics, pharmaceuticals, manufacturing, and chemical industry.

2、 Working principle

The activated carbon fiber treatment and recovery device for organic waste gas utilizes the advantages of efficient adsorbent material - activated carbon fiber (ACF) - with strong adsorption capacity and fast adsorption and desorption speed to purify the air and recover organic solvents. YJT activated carbon fiber treatment of organic waste gas is divided into inlet, carbon fiber filtration, and outlet sections. The organic waste gas enters the box through the inlet, and the purified exhaust gas is discharged into the atmosphere through the ventilation fan. The carbon fiber saturated by adsorption can be regenerated, and the regenerated carbon fiber can be reused. If the organic gas is not recovered and only treated, this device can use low-cost activated carbon as the adsorbent material to treat the exhaust gas according to specific conditions.

3、 Structure and Characteristics

This complete set of equipment mainly consists of: fan, gas filter, activated carbon (or fiber) adsorption tower. For gas recovery, a condenser and separator are also required. For carbon fiber regeneration, steam and hot air stove are also required. During desorption, water vapor is used to achieve the desorption of organic gases from carbon fibers. The desorbed solvent and water vapor are condensed in a condenser and separated by a separator to obtain pure solvent. The activated carbon fibers in the detached filter cartridge must be dried with hot air before they can be reused.

The characteristics of this complete set of equipment are:

(1) The organic solvent recovery rate is high, and through reasonable design and adjustment of switching time, the solvent recovery rate can be above 95%;

(2) The stability of the solvent during recycling is good, with minimal decomposition;

(3) Widely applicable to low concentration solvents, polymeric monomers, and high boiling point solvents;

(4) The device is small in size, easy to operate and maintain;

(5) High safety, the adsorption heat of activated carbon fiber is very small and easy to dissipate, which will not cause excessive local temperature.

4、 Equipment selection

In terms of performance, it can be divided into efficient and standard types.

Divided by material: galvanized steel plate and 304 stainless steel.

The detailed technical parameters and selection can only be determined by the design and selection of the company's technical department.

Because each user needs to deal with different concentrations, temperatures, and processing capacities of exhaust gas, users must first contact our company when choosing, and we will help users choose cost-effective and value for money equipment.

5、 Efficient adsorbent material - activated carbon fiber description

Activated carbon fiber is a new type of high-efficiency adsorbent material that has a high adsorption capacity for toxic and harmful gases, with fast adsorption and desorption rates. Carbon fiber is suitable for desorption in hot air (105 ℃) and can be recycled. It also has corrosion resistance that is not afraid of acid and alkali, and has significant purification effects on organic waste gases such as benzene, sulfur dioxide, carbon monoxide, nitrogen oxides, hydrogen sulfide, petroleum gas, and odors.

Activated carbon fiber organic waste gas purification device

overview

Organic waste gas is an important pollutant present in various industries, and treatment methods include condensation, direct combustion, catalytic combustion, activated carbon adsorption, absorption liquid absorption, etc. Our company has researched and produced an activated carbon fiber device, which has a larger adsorption capacity (10-40 times) than activated carbon, higher purification efficiency (over 95%), easy regeneration, small equipment footprint, corrosion resistance, easy maintenance, small ancillary equipment, no secondary pollution, and is particularly suitable for high concentration purification treatment.

structure and principle

The purifier is divided into an inlet section, a carbon fiber filtration section, and an outlet section. The filtration section consists of several to dozens of filter cartridges, with a filter layer thickness of 50-100mm. Organic waste gas enters the box from the inlet section, is adsorbed and purified by the filter cartridges, and the purified air is discharged into the atmosphere by the ventilation fan.

Performance of carbon fiber

Activated carbon fiber felt is a new type of high-efficiency adsorbent material that has a high adsorption capacity for toxic and harmful gases, with fast adsorption and desorption rates. Carbon fiber felt is suitable for desorption with hot air (150 ℃) and can be recycled. It also has corrosion resistance without fear of carbon alkali and has significant purification effects on organic waste gases containing benzene, carbon monoxide, sulfur dioxide, nitrogen oxides, hydrogen sulfide, petroleum gas, odors, etc.

Equipment usage status

This product is used for the purification of benzene based substances in the spray painting process, with a purification efficiency of 97-99%. After purification, the benzene concentration in the air is 0.068mg/Nm3. The concentration of toluene is 7.48mg/Nm3. Compliant with national and local emission standards