VOCs pollution control, which misunderstandings should be bypassed

VOCs pollution control has always been a shortcoming and difficulty in air pollution control. It can be called a "tumor" and it is difficult to "cut". VOCs involve a wide range of polluting industries and a wide variety of VOCs emitted by various industries. The components are extremely complex. Hydrocarbons, alcohols, ethers, esters, etc. are common. There are many industries involved in emissions, except for the well-known petroleum and petrochemical industries. It also includes dozens of key emission industries such as organic chemicals, surface coating, packaging and printing, medicine, and electronics. Only by studying the emission characteristics of VOCs in different industries, and figuring out the source of the pollution of enterprises, can we formulate practical and feasible measures.

It is understood that for the moment, many companies are generally caught in four misunderstandings due to various factors:

1. Only care about the initial investment and not care about daily operation and maintenance;

2. only concerned about whether there is no treatment, do not care about processing efficiency;

3. only consider the ventilation of the workshop, do not care about exhaust gas collection;

4. only pay attention to equipment procurement, do not care about the overall design.

Among them, especially the VOCs governance engineering design lacks the overall design and the concept of overall consideration. In the early stage, the VOCs are treated due to insufficient consideration of temperature, flow and pressure changes of different VOCs on-site conditions, and lack of regular understanding of technical processes. The engineering design is flawed and the system construction is imperfect. After completion, the operation fails to meet the expected design goals, which affects the implementation effect of the treatment project. The original pollution control facilities generally have “technical choices are not in place, design capabilities are insufficient, and safety performance is obtained. Unexpected problems such as lack of guarantee, lack of operation and maintenance, and ultimately, most of the sewage companies have fallen into difficulties such as unsuccessful discharge of standards or safety hazards and repeated construction, and they are unable to fulfill their environmental responsibility.

According to industry insiders, VOCs governance is a systematic project that takes into account all aspects. Different industries have different technical routes. Even in the same industry, different processes and technical routes will be different. Even due to different air volumes and different concentrations, the required technical routes are different.

No single technology can solve all VOCs. For example, in the printing industry, which is a key industry for VOCs emissions, each printing company has unique processes and needs, and the VOCs emitted will vary. VOCs governance companies should develop the most appropriate technical route for different companies to prescribe the right medicine.

There are dozens of VOCs processing methods, and the principle is nothing more than two kinds of recycling technologies for recovering valuable solvents and destroying technologies for decomposing VOCs, that is, two technologies of recycling and destruction.

More practical applications use combined technology. Whether it is catalytic combustion or UV photolysis, the specific technical route depends on the actual working conditions of the customer. Can not copy and copy, can only be specific analysis, accurate governance.