Desulfurization tower process water and cooling water system common fault and examples

Desulfurization tower process water and cooling water system common fault and instance - 2019 03 - 19 in the operation of the process water system in water system is the main problem that can't balance, as well as some problems because of the solid impurities. Common faults ( 1) The problem of water balance. Since all process water eventually recycle to the absorber, when equipment cooling, sealing water consumption is too large, or the limestone slurry density is too low, can cause into the absorption tower water is too large, which affects the demister flushing effect. Methods: keep cooling, sealing water right; Keep the limestone slurry density in the normal range. To avoid the smoke volume is too small under the condition of long running. ( 2) Process of large particle size and hardness of the water containing solid content into the mechanical seal device, may cause the damage of the seal. Methods: when the water quality is poorer, filtering the necessary measures should be taken into account. ( 3) For parallel arrangement of the cooling water pipe, if the pipe resistance coefficient is smaller and the resistance of the relative differences between line, water distribution in the pipe will vary widely, even flow to a full stop in the side of the resistance is bigger, affect the safe operation of the cooling equipment. Processing method: resistance relative difference of the parallel pipeline is reduced, the synchronization increase the resistance of parallel line when necessary, as in the case of enough water pressure and valve opening down the line. Example A project 2 A/B before and after oxidation fan bearing cooling water, process water by the same valve is divided into two road, respectively before and after entering the bearing housing. Before commissioning, it found that bearing temperature is higher, check the cooling water pipe, found the front bearing import and export water temperature without cooling water temperature difference, the cooling water does not flow. Mother close to the water supply pipe and bearing, export water temperature significantly higher than the imported water temperature, cooling to normal. Increase the valve opening, the total water quantity increased obviously, but the front bearing still can not get cool. Water supply pipeline, the bearing water respectively before and after adjustment, fault elimination.