·       Cleaning agent mainly refers to acid cleaning agent, commonly used inorganic acid and organic acid.

1. On the premise of a certain time scale dissolution, low concentration, normal temperature, safety, economic cleaning agent should be selected.

2. Test material with cleaner according to equipment, scale, and so on and so forth to determine the status of the samples and composition, to emphatically pointed out in this is stainless steel equipment are not allowed to use hydrochloric acid cleaning, caused by residual chlorine ion in hydrochloric acid pickling will stainless steel to produce stress corrosion and corrosion cracking.

3. In general, two kinds of cleaning agents can be selected, and each kind of cleaning agent can choose two kinds of different concentrations commonly used in cleaning, a total of 4 kinds of cleaning agents used in the formula.

4. For some complex, special scale sample choice range should be wide, can choose a few test cleaner more, for some complex organic scale sample to choose some specific targeted cleaning agent.

According to the selection principle of cleaning agent, combined with the actual situation to determine the cleaning agent. Generally speaking, taking the scale of time of scale of scale of scale dissolution, the shorter the time of scale dissolution, the better the solubility of detergent to scale sample, therefore, the cleaner with the shortest time of scale dissolution should be selected. If there is no significant difference in the time of descaling, the time of descaling should be taken into account, mainly from the selection principle of cleaning agent and the difficulty in operation. After comprehensive analysis, the appropriate cleaning agent should be determined.