Organic Waste Gas Spray Tower

Product Overview

The organic waste gas spray tower is a wet pretreatment vessel used to remove paint mist, oil mist, dust, water-soluble organics and odor components from industrial exhaust gas before downstream VOC treatment. It is also called a VOC spray tower, organic gas scrubber, wet scrubber tower, paint mist scrubber or exhaust gas washing tower.

Exhaust gas enters the tower from the bottom or side and flows upward through the spray and packing section. Water, alkaline solution or a specialized absorption liquid is sprayed from the top, forming a liquid film on the packing surface. Paint mist, oil mist, particulates and water-soluble organic components are captured through gas-liquid contact, and the purified gas passes through a demister before entering downstream treatment units.

For most organic exhaust streams, the spray tower mainly serves as a pretreatment stage. It cools, washes and removes particulates and sticky pollutants, helping protect downstream activated carbon adsorbers, RTO, RCO, catalytic oxidation or biological treatment systems.

Why Stainless Steel Organic Waste Gas Spray Tower

Organic waste gas streams often contain paint mist, oil mist, solvent vapors, moisture and temperature fluctuation. In coating, chemical, pharmaceutical and food processing plants, these conditions can cause scaling, corrosion and material degradation over time.

Stainless steel spray towers provide higher mechanical strength, better temperature resistance and longer service life than plastic towers, especially when exhaust gas temperature is elevated, the environment is humid, or the system requires frequent cleaning. 304 stainless steel is suitable for general organic waste gas pretreatment, while 316L stainless steel is recommended when chloride ions, acid mist carryover or corrosive condensate are present.

Structure & Working Principle

The organic waste gas spray tower is a vertical cylindrical vessel made of stainless steel, with gas inlet, gas outlet, inspection door, drain connection and supporting structure. Exhaust gas flows through the tower while circulating liquid is sprayed through nozzles.

Inside the tower, the packing layer increases gas-liquid contact area and improves capture efficiency for paint mist, oil mist and water-soluble organics. The demister section removes entrained droplets from purified gas to reduce carryover and downstream corrosion. The circulation tank collects washing liquid for reuse, with optional filtration, oil separation, pH monitoring and dosing systems.

For high paint mist or oil mist loads, a cyclone or swirl separation section can be added upstream of the packing layer to improve anti-blocking performance and reduce maintenance frequency.

Typical Specifications

The tower is manufactured from stainless steel in vertical spray tower or scrubber tower configuration. Diameter is typically customized between 800 mm and 4000 mm, and height is determined according to packing height, spray stages and site conditions. Wall thickness is generally designed between 2 mm and 4 mm depending on diameter, structural load and process requirements.

Internal parts include packing, spray nozzles, demister, circulation pump, piping, inspection ports and supporting structures. Exact dimensions, number of spray layers, packing type and connection configuration should be determined according to gas volume, pollutant concentration, temperature, humidity and integration with downstream treatment equipment.

Typical Applications

Organic waste gas spray towers are widely used in coating and painting lines, chemical and pharmaceutical plants, printing and packaging facilities, food processing and flavor production, rubber and plastic processing, electronic manufacturing, furniture and metal surface treatment, as well as industrial odor control systems. They are commonly arranged upstream of activated carbon adsorbers, RTO, RCO, catalytic oxidation, biological treatment or WESP systems to remove paint mist, oil mist, dust, moisture and water-soluble organics before final VOC treatment.

Manufacturing & Company Strength

Wuxi Xinchangyuan Equipment Manufacturing Co., Ltd. specializes in the design and manufacture of stainless steel spray towers, absorption towers, alkali scrubbers, wet electrostatic precipitators, anode modules and anode tube bundles. Our facility is equipped with plate rolling, laser cutting, CNC forming, automatic welding, surface treatment and module assembly capabilities, supporting both standard and customized stainless steel process equipment for industrial exhaust gas treatment.

We provide engineering support from material selection and structural design to fabrication, assembly and installation guidance. Each organic waste gas spray tower is manufactured according to project gas composition, paint mist and oil mist load, temperature, corrosion level and site layout. Our team can integrate spray towers with wet electrostatic precipitators, demisters, circulation systems and VOC treatment lines, helping industrial customers achieve stable pretreatment performance and reliable long-term operation.

FAQ

What is an organic waste gas spray tower used for?
It is mainly used as a wet pretreatment unit to remove paint mist, oil mist, dust, moisture and water-soluble organics from organic exhaust gas before downstream VOC treatment.

Can a spray tower remove all VOCs?
Not always. A spray tower is highly effective for paint mist, oil mist, particulates and water-soluble organics, but low-solubility VOCs usually require downstream treatment such as activated carbon adsorption, RTO, RCO or catalytic oxidation.

When should 304 be upgraded to 316L or 2205?
If the exhaust gas contains chloride ions, acid mist carryover, corrosive condensate or long-term wet corrosion, 316L or 2205 stainless steel is usually more reliable than 304.

Can it be used together with a WESP system?
Yes. An organic waste gas spray tower can be arranged upstream of a WESP or other polishing equipment to reduce particulate, mist and moisture load and help downstream systems operate more stably.

Tel：+86 13656199922

Phone：+86 13656199922

Email：wxxcysbzzyxgs@163.com

Address：35-3 Yanqiao Road, Yanqiao Street, Huishan District, Wuxi City, Jiangsu Province, China