The Benzene Based VOC Treatment Project Is Running Smoothly

The volatile organic compound (VOC) waste gas generated in the industrial production process is called one of the three industrial wastes, including alkanes, halogenated hydrocarbons, aromatic hydrocarbons, alcohols, ketones, esters, amines, etc. The main hazards are (1) the production of photochemical smoke under light, causing secondary pollution; (2) Toxic and foul smelling, can cause acute poisoning and even death in humans; (3) Some VOCs can damage the ozone layer. Therefore, VOCs have become a global public hazard.

Our company has developed a special polymer adsorbent based on the characteristics of volatile organic waste gas, which has the advantages of large adsorption capacity, high adsorption accuracy, fast adsorption rate, and high removal rate. After the adsorbent is saturated, the blow off technique can be used to desorb the organic matter adsorbed on the adsorbent and recover the relevant organic matter. After desorption, the adsorbent regains its adsorption capacity, and the adsorbent surface has lipophilicity, so the regenerated adsorption performance is stable and can operate for a long time. The process flow is shown in Figure 1.

Figure 1 Process Flow

The comparison between our series of VOC specific adsorbents and activated carbon fibers is shown in Table 1.

Table 1 Comparison of Adsorption Properties of Adsorbents

Case

A petrochemical enterprise in Beijing produces waste gas containing benzene organic compounds during the production process. The composition and emissions of the waste gas are as follows, and it is required to recover benzene organic compounds. Previously, the customer used activated carbon fiber, which operated abnormally. The activated carbon fiber quickly failed and the exhaust gas could not be effectively treated, seriously affecting the normal production order. The customer entrusted our company to optimize the waste gas treatment process, renovate the waste gas equipment, and use our company's dedicated benzene based adsorbent. The system operates stably, and the treatment results are shown in Table 2. Figure 2 shows the project site.

Table 2 Composition and displacement

Figure 2 Project Site