目前存在氨液循环泵易抽空、液氨产品外观不合格(颜色发红)、液氨外送泵密封泄漏等问题。
There were some new problems such as the easy exhaustion of the liquid ammonia circulating pump and the appearance of liquid ammonia product was off specification.
氨液循环泵由齿轮泵改为高速泵，效果较好。
Using high speed pumps to replace gear pumps for ammonia recycling, satisfactory results were achieved.
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