Mechanical cleaning method of tube still heater

The invention discloses a mechanical cleaning method of a tube still heater, which is characterized in that a protective device of a high-pressure cleaning machine is firstly manufactured, the protective device of the high-pressure cleaning machine is a sleeve, and the lower part of the sleeve is provided with a platform. When a tube still of the heater is cleaned, the protective device of the high-pressure cleaning machine is arranged at the end of the tube still of the heater, a spray nozzle of a spray gun is inserted into the tube still of the heater through the sleeve for cleaning, an operator operates standing around the platform, the high-pressure spray gun is taken out after one tube still is cleaned, and the protective device of the high-pressure cleaning machine is moved to the next tube still for cleaning after the spray gun is taken out. The mechanical cleaning method of the tube still heater provided by the invention achieves the intended purpose shown by practical application, and is particularly applicable to mechanical cleaning of the tube still heater in ammonium phosphate production.