The two-stage gasifier is one of the common furnace types in atmospheric fixed-bed mixed gasification furnaces. The furnace body is designed with upper and lower sections. The upper furnace body is called the carbonization section and the lower furnace body is called the gasification section. The carbonization section mainly performs drying and carbonization of coal to produce high calorific value carbonization gas. The gasification section is used to gasify the coal after carbonization and produce gasified gas. The equipment is divided into retort gas outlet and gasification gas outlet. The produced gas is purified by different equipment, and the gas in the upper and lower sections are merged together and sent to users for use.
1. When the user suddenly uses gas, the gas pressurizer cannot respond in time, causing the pressure to drop;
2. When the pressure is high, some water seals are broken, and the pressure in the furnace will also drop;
3. The vertical channel is blocked, which will cause the gas pressure at the lower outlet to drop;
4. Excessive release will cause pressure drop.
Methods to overcome the pressure increase and decrease in the two-stage gas generator:
1. Each gas channel must not be closed or blocked;
2. The furnace condition must be ensured so that it is in normal gasification and normal distillation conditions;
3. Strengthen gas adjustment methods, adjust in time, and achieve stability;
4. Users must notify the gas station in advance before starting or stopping the gas, so that they can prepare for adjustments in advance.
