How to choose a wet scrubber for exhaust gas purification?
To choose a suitable wet scrubber type, it is necessary to go through investigation and research, fully understand the operating conditions, and choose a reasonable tower type with better characteristics. -Generally speaking, there are many choices of wet scrubber towers that meet the requirements of production tasks at the same time, but they should be summarized and considered from the economic point of view, production experience, and detailed conditions. Some considerations when choosing are listed below.
Elements related to physical properties
Elements related to operating conditions
Small towers are cheaper than packed towers. Generally, packed towers should be used if the tower diameter is less than φ 800 mn.
The following are some of the key considerations when planning a wet scrubber, including:
When selecting the appropriate wet scrubber (wet gas absorption unit), several key factors need to be considered to ensure that it can effectively remove the target contaminants and meet the specific application needs. Here are some important factors to consider:
Contaminant Types and Concentrations: Identify the types of pollutants to be removed, including gases and particulates, and their concentration levels. Different types of wet scrubbers may be more effective on different pollutants.
Treatment efficiency requirements: According to emission standards and environmental regulations, determine the required pollutant removal efficiency. Different types of wet scrubbers may have differences in treatment efficiency.
Operating Temperature: Wet scrubbers are usually required to operate within a specific temperature range. Make sure that the selected equipment is suitable for the temperature conditions during processing.
Treatment capacity and gas flow: Consider the maximum gas flow required by the treatment unit to ensure that the wet scrubber can meet the treatment requirements.
Chemical Selection: Select the appropriate absorbent fluid based on the nature of the contaminants to ensure effective absorption of the contaminants from the gas stream into the liquid. Different wet scrubbers may require different kinds of absorbent fluids.
Waste Liquid Treatment: Consider the liquid waste disposal needs from wet scrubbing processes, including the cost and environmental impact of handling, storing and disposing of liquid waste.
Operating and Maintenance Costs: Consider the operating, maintenance and energy costs of the equipment to ensure that the selected equipment is economically viable in the long run.
Space constraints: Select the appropriate wet scrubber size and configuration based on existing equipment layout and site constraints.
Safety: Ensure that the selected equipment does not generate hazardous gases, chemicals or waste liquids during operation.
Equipment reliability and durability: Choose a verified equipment manufacturer to ensure that the equipment has stable performance and durability in long-term use.
Environmental impact: Consider the impact of wet scrubbers on the environment, including emissions, energy consumption, etc.
When selecting a wet scrubber, a detailed engineering evaluation, including technical evaluation, economic analysis, and environmental impact assessment, is usually required to ensure that the selected equipment can achieve the best performance and benefits in a specific application scenario.
The detailed operation of the selected water pump
1. According to the installation, terrain conditions, water level conditions, and operating conditions of the equipment, it is recognized to choose horizontal, vertical, and other types (pipeline, submersible, submerged, non-blocking, self-priming, gear, etc.).
2. According to the nature of the liquid medium, it is recognized that the clean water pump, the hot water pump is still an oil pump, a chemical pump or a corrosion-resistant pump or an impurity pump, or a non-clogging pump may be used. For pumps installed in explosive areas, corresponding explosion-proof motors should be selected according to the grade of the explosive area.
3. According to the flow rate, it is recognized that the single-suction pump is still a double-suction pump; according to the head level, the single-stage pump is still a multi-stage pump, and the high-speed pump is still a low-speed pump (air conditioning pump). The power of the multi-stage pump is better than that of a single-stage pump. If the single-stage pump and multi-stage pump can also be used, the single-stage pump should be selected first.
