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Test Run Plan Chapter 1: The following procedures must be followed before each process is put into operation. 1. Sulfur melting: All tanks, liquid sulfur pipelines, steam jackets, as well as heating and insulation coils must be cleaned, flushed, and purged before use (flushing is carried out simultaneously with the system’s water-based trial operation). 2. Before putting the sulfur burning furnace, converter, and preheating furnace into use, it is necessary to dry them out first. 3 Thermal Engineering 3.1 Flushing of water supply pipelines, drum, and boiler shell (performed together with the feed water pump). 3.2 Boiler firing-up (performed together with the sulfur burner heating). 3.3 Superheater and steam pipe purging (performed during the high-temperature baking stage). 4 Dry absorption 4.1 Cleaning of the circulation tank. 4.2 Acid cleaning of acid pipes, tower packing, and circulating acid tanks. After pickling, drain the acidic waste and manually clean the circulation tank again. During the pickling process, adjust the acid distributor to determine the circulation rate. 4.3 Static and dynamic passivation of acid coolers. 4.4 After feeding the material, adjust the acid pipeline anode protection system. 5 Circulating Water 5.1 Cleaning 5.2 Pipeline Flushing Chapter 2 Sulfur Melting Process 1 Cleaning and flushing of various tanks and pipelines in the sulfur melting process 1.1 Purpose: To remove debris and dust from the rapid sulfur melting tank, coarse sulfur tank, liquid sulfur storage tank, refined sulfur tank, coating tank, as well as the liquid sulfur delivery pipes. During the flushing process, the agitator, the crude sulfur pump, and the refined sulfur pump are tested under load using water. 1.2 Flushing procedure 1.3 Cleaning and flushing procedure: Open the doors to the rapid sulfur melting tank, coarse sulfur tank, coating tank, fine sulfur tank, liquid sulfur storage tank, and the tank located in front of the furnace; then enter each tank to remove any debris from inside. Open the drain valves of the aforementioned tanks, flush each tank with fire water, and then close the access doors. Use fire water to fill the refined sulfur tank; when the liquid level in the tank reaches 2/3, check and start the refined sulfur pump to send water into the liquid sulfur storage tank, thereby flushing the pipeline between the refined sulfur tank and the liquid sulfur storage tank, as well as carrying out testing and adjustment of the refined sulfur pump. D When the liquid sulfur tank has a certain water level, start the sulfur transfer pump to supply water to the tank in front of the furnace. When there is a certain water level in the forehearth tank, start the forehearth tank pump to flush the liquid sulfur pipe between the forehearth tank and the sulfonation gun (the sulfonation gun cannot be installed at this time). After the aforementioned flushing and water-based commissioning are completed, drain all the water accumulated in the tanks and pipes. A person then enters the tanks and uses clean cotton yarn to wipe away the sludge at the bottom of each tank; if necessary, the tanks can be flushed again separately. (If there is a large amount of water in the tank, it can be pumped out using a submersible pump before anyone enters to clean it.) 1.4 Precautions during flushing: A If the upper part of the rapid sulfur melting tank is lined with acid-resistant tiles, care must be taken to prevent water from splashing onto these tiles; in particular, it is essential to avoid water covering the tiles. During the B flushing process, it is necessary to prevent electrical equipment, instruments, and insulation from getting wet; appropriate moisture-proof measures should be taken for essential equipment. 2 Purging of the steam pipelines for heating and heat retention in the sulfur melting and burning processes