In modern chemical engineering, petrochemical refinement, natural gas processing, and environmental safety plants, gas-liquid separation stands as a foundational phase. A Knockout Tower (often referred to as a knockout drum, separator, or scrubber) is engineered specifically to eliminate suspended liquid droplets from gas streams before they reach downstream components such as compressors, flare stacks, or recovery burners. Without highly efficient knockout systems, liquid carryover can lead to catastrophic compressor failure (liquid slugging), rapid catalyst poisoning, or severe environmental compliance violations during combustion vents.
Hebei Hongke Qingneng Environmental Protection Equipment Co., Ltd. applies advanced thermodynamic principles and computational fluid dynamics (CFD) to design heavy-industry knockout systems. Engineered in close coordination with Tsinghua University and the Chinese Academy of Sciences (CAS), our equipment represents the peak of heat transfer dynamics, high-velocity gas treatment, and modular skid integration.
Our knockout towers are configured to meet rigorous standards, delivering:
Hebei Hongke Qingneng Environmental Protection Equipment Co., Ltd. was established in June 2021, with a registered capital of 78 million yuan. It focuses on the R&D and manufacturing of energy conservation and environmental protection industry in the industrial base of Sanhe Economic Development Zone, Langfang City. The company is engaged in the design and manufacturing of various pressure vessels, medical waste high-temperature steam treatment equipment, animal tissue (residue) treatment equipment, biological wastewater (live toxic wastewater) treatment equipment, skid-mounted assembly of various equipment, coalbed methane/shale gas/natural gas purification and liquefaction, VOC treatment, chemical tail gas treatment, industrial refrigeration, BOG tail gas helium extraction and other environmental protection equipment.
Founder & Chairman
Dr. Sun obtained a doctor's degree from the Institute of Physics and Chemistry Technology, Chinese Academy of Sciences (CAS) and holds the title of national senior engineer. He has successively undertaken or presided over the National 863 Program, major fund projects of the Natural Science Foundation, aerospace and military projects, major knowledge innovation projects of CAS, and major special projects of national science and technology. Awarded the First Prize of Science and Technology of China Coal Industry in 2013, Special Prize of Technological Invention of Chinese Society of Refrigeration in 2015, and First Prize of Beijing Science and Technology Award in 2016. He has overseen 20+ independent R&D patents applied directly to heavy industrial systems.
General Manager & Senior Engineer
Senior engineer of the Institute of Physics and Chemistry Technology, CAS, and General Manager of Hebei Hongke Qingneng. Over the years, he has directed the commercial execution and operations of critical gas systems. He has undertaken many scientific research projects including the "12th Five-Year Plan" national major science and technology special projects and aerospace military projects. He has published 24 domestic and international academic papers (including 11 SCI/EI indexed papers) and possesses 5 national invention patents. Recipient of the Beijing Science and Technology Award First Prize in 2016 and Silver Medal of the 19th China International Industry Expo.
Chief Engineer
Dr. Cheng earned his Doctor of Engineering from the Institute of Physics and Chemistry Technology, CAS. He led the "Technology Development and Application of Skid-mounted Natural Gas Liquefaction Unit with Series of Specifications". He won the 2015 Special Prize of Science and Technology Award of Chinese Refrigeration Society and the 2016 First Prize of Science and Technology Award of Beijing. An authority on mixed working medium phase change heat transfer, flow dynamics, and cryogenic gas purification architectures, he commands our fundamental research translation into commercial equipment.
The separation efficiency inside a Knockout Tower depends on reducing the velocity of the incoming gas stream to allow gravity to pull out liquid droplets, coupled with dynamic centrifugal or mechanical impingement surfaces. Our team deploys three distinct stages of separation technology to guarantee trace liquid concentrations:
Inlet deflectors or half-pipe nozzles direct fluid tangentially or vertically downward. This utilizes inertia to cause instant drop-out of large bulk liquids (> 150 microns). Diverting flow patterns efficiently prevents splash re-entrainment and manages slugging flows easily.
Using calculated cross-sectional areas based on the Souders-Brown equation, the upward gas stream speed is regulated below the terminal velocity of targeted droplets. Droplets larger than 100 microns fall to the bottom sump under gravity forces alone.
For fine mist particles (3 - 30 microns), we configure wire mesh demisters or vane-type droplet separators. Vane packs withstand high liquid loads, forcing gas to make sharp turns, and depositing micro-droplets on collection blades to drain downward.
This table demonstrates typical design ranges and specifications for Hongke Qingneng Knockout Towers:
| Separation Type | Droplet Size Cutoff (μm) | Ideal Application Range | Available Materials | |
|---|---|---|---|---|
| Gravity Settling Separators | > 150 | Bulk liquid primary knockout, high-viscosity hydrocarbon removal | Carbon Steel (Q345R, SA516 Gr.70) | Low |
| Wire Mesh Demisters | 3 - 10 | Gas purification plants, LNG vapor pre-treatment, BOG lines | SS304, SS316L, Duplex, Monel | Moderate |
| Vane Pack Coalescers | 10 - 40 | High gas-flow rates with heavy liquid loading, scrubbing columns | SS316L, Super Duplex | Minimal |
| Centrifugal Cyclones | > 25 | Inlet scrubbers for high particulate or sand load applications | Hardened Alloy Steels, Stellite Overlay | Moderate to High |
In the remote coalbed methane (CBM) fields of Shanxi and shale gas deposits in Sichuan, raw gas streams arrive laden with water, condensates, and aggressive chemical contaminants. Here, skid-mounted inlet knockout towers act as the critical line of defense. By recovering and drying out the natural gas stream before transport, they prevent corrosion of extensive pipeline networks and protect expensive compressors from immediate liquid slugging failures.
Before natural gas can be liquefied at temperatures down to -162°C, heavy hydrocarbons and moisture must be removed to avoid freezing within the primary cold box. Knockout towers process gaseous components at high pressures, working in concert with molecular sieve dehydration systems to yield a purified dry stream ready for cryo-fractionation.
In refinery flare stacks, liquids inside volatile purge gas must be completely trapped prior to ignition to prevent burning droplets from raining down around the facility. Our large-scale flare knockout drums isolate high-volume relief flows safely, and collect liquids that can be pumped back to separation systems while venting only clear gases for safe combustion.
In veterinary diagnostics labs and agricultural sanitization facilities, exhaust air venting from high-temperature animal tissue hydrolysis autoclaves contains moisture and organic aerosols. A specialized bio-scrubbing knockout column condenses, disinfects, and traps hazardous airborne liquids, guaranteeing zero discharge of pathogens into the environment.
Hebei Hongke Qingneng operates inside the Sanhe Economic Development Zone, Langfang City, right in the heart of the Bohai Economic Rim. This strategic location offers exceptional supply chain resilience. Access to regional metallurgy networks ensures a constant supply of high-grade raw steel (Q345R, SA516 Gr.70, duplex steels) at highly stable pricing.
Our facility utilizes modern automated welding systems, digital plate rolling lines, and fully automated CNC machining centers. Keeping all fabrication steps under one roof allows us to shorten delivery times compared to European or American competitors. Additionally, our closeness to the major shipping ports of Tianjin and Qingdao permits fast and safe shipping of large-footprint skid units globally.
Furthermore, the company's technical connection with Tsinghua University and the Chinese Academy of Sciences enables us to adapt quickly to changing specifications. It translates scientific discoveries directly into stable, commercial-grade separation machinery.
All pressure vessel weld lines undergo ultrasonic (UT) and radiographic (RT) testing to guarantee zero leaks in hazardous services.
Every piece of structural steel is certified with mill test reports, tracking chemical composition from smelting through processing.
We work regularly with SGS, Lloyd's Register, and Bureau Veritas to verify that our equipment meets overseas compliance requirements.
The company has professional talents from Tsinghua University, Institute of Physics and Chemistry Technology, Chinese Academy of Sciences and other research institutes. In recent years, the company has been committed to the technical research and development, equipment manufacturing and application promotion of environmental protection equipment and skid-mounted liquefaction devices. The company has obtained a number of independent intellectual property patents and has obtained rich project performance and good reputation in China.
The company has successfully obtained the A2 level pressure vessel manufacturing license, pressure pipeline component manufacturing license, GB/T19001-2016 quality system certification, Sinopec HSSE/China Petroleum Health, Safety and Environment Management System certification and the high-tech enterprise certification, and was rated as Langfang municipal R&D platform. The company adheres to the purpose of "innovation-driven development, service leading upgrading" and provides customers with one-stop solutions.
We believe that the various sets of environmental protection equipment developed by the Company will be widely used in the fields of gas recovery and resource protection in China, making important contributions to the national prevention and control of air pollution, carbon emission reduction and environmental protection.
When delivering industrial pressure vessels to international buyers, matching international standards is non-negotiable. Hebei Hongke Qingneng designs, calculates, and fabricates in strict alignment with several major mechanical engineering codes:
We perform mechanical strain testing and structural calculations using tools like:
If you have specific requirements for gas flow rates, pressure configurations, liquid loads, or certification standards, our team is ready to assist. Contact Hebei Hongke Qingneng for tailored layout designs, optimization studies, and pricing quotes.
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