Chemical pretreatment + Biological treatment + Advanced treatment + Safe and high-strength regeneration (non-condensable gas reduction)

— Technical Overview —

This technical product is mainly aimed at low concentration, high air volume, multi-component organic waste gas, advanced treatment unit as the core process unit, adopts adsorption treatment technology, supporting safe and high-strength regeneration, non-condensable gas reduction unit, etc., to desorb and regenerate the adsorbent , to ensure the adsorption and removal efficiency of the advanced treatment section, and effectively prolong the service life of the adsorbent. The chemical pretreatment unit and biological treatment unit are mainly used for pretreatment of sulfur series, ammonia series, malodorous substances and some VOCs in the exhaust gas. Each process section is combined with each other, and the VOCs intake concentration is lower than 2000mg/m3. , the exhaust gas can meet the emission standards (the exhaust gas treatment efficiency can reach more than 99%, the emission index is ≤50mg/m3, and the odor concentration is stable below 200 (dimensionless)). Regenerating and desorbing the high-concentration exhaust gas, and then combining it with other exhaust gas treatment processes (such as KV-VRU, KG-RTO, KG-RCO...), makes this technology product more widely applicable.

The advanced treatment process unit is the main means to ensure the stable and up-to-standard discharge of exhaust gas. Our company activates the adsorbent used in a special process to enhance the adsorption and removal efficiency of exhaust gas. Strengthening the design of the adsorption device (that is, supporting gas distribution systems such as gas inlet and outlet, regeneration steam, and regeneration tail gas) has better adsorption time and adsorption efficiency than traditional adsorption facilities.

The high-strength regeneration process unit effectively prolongs the service life of the adsorbent and enhances the anti-decay cycle and adsorption performance of the adsorbent. After the exhaust gas generated by the high-strength regeneration process unit is treated by condensation and deoxidation, a very small amount of non-condensable gas is recycled through the non-condensable gas homogenization system or sent to the torch for combustion, and the exhaust gas is thoroughly treated to reduce secondary pollution.

★ Chemical pretreatment section

The chemical pretreatment section is a chemical absorption process, which means that a chemical reaction occurs during the absorption process to turn harmful gaseous components into liquid or harmless gases.

★ Biological treatment section

The biological treatment section is a biodegradation process, which means that the microorganisms come into contact with the organic matter in the exhaust gas, and a biochemical reaction occurs, and the pollutants are degraded into carbon dioxide and water without secondary pollution.

The reaction formula for partial biodegradation is:

★ Advanced processing section

The advanced treatment adopts the adsorption process, and is equipped with corresponding pipelines, valves and instruments. The adsorption system also includes the following features:

The adsorption tank has an intake and exhaust gas distribution system, and a regeneration steam gas distribution system to ensure the adsorption and regeneration efficiency;

The adsorbent uses a variety of adsorption fillers, and the adsorbent is modified and passivated in a targeted manner to ensure the safety and adsorption efficiency.

The adsorption tank has the function of over-temperature automatic cooling, automatic fire extinguishing, over-pressure alarm,and equiped with high-temperature alarm lights .

★ Safe and high-strength regeneration system

In order to ensure the efficiency and thoroughness of regeneration, especially the desorption and regeneration of high boiling point substances ,and prolong the service life of adsorbent materials,the high-strength desorption and regeneration technology adpopt various measures such as high temperature、high vacuum and rapid cooling ,and is equiped with a fire extinguishing device. After regeneration, the cooled and seperated non-condensable gas is returned to the inlet of the vapor recovery device.

★ Non-condensable gas reduction system:

After the non-condensable tail gas is compressed and homogenized, it is released into the fuel gas pipeline network in a small amount and evenly for recycling, so as to realize the recovery and utilization of this part of light hydrocarbons; CO₂ and H₂O completely solve the problem of non-condensable gas accumulation in the system.

— Technical Value —

— Process Flow Chart —

On-site picture of waste gas treatment device

KG-BLAS technology products are suitable for waste gas treatment in places where low and medium concentrations of organic odor gas are discharged. The main application industries are:

Petrochemical & Coal Chemical Industry;

Municipal Industry;

Fine Chemical & Pharmaceutical Chemical Industry;

Textile, Dyeing & Chemical Fiber Industry;

Painting Industry;

Rubber & Plastic Industry;

Paper Industry;

Printing Industry;

Steel Industry;