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Design and Development of SMPO Wastewater Three-effect Evaporator
Summary:
The wastewater produced in the SMPO production process is extremely difficult to treat due to its high temperature, high alkalinity and high chemical oxygen demand, resulting in the survival of biochemical treatment strains. However, biochemical methods are currently used to treat SMPO wastewater in China. In view of the salt-containing industrial wastewater from SMPO plant, Ruikai Chemical has developed a more concise multi-effect evaporation treatment equipment. The wastewater from styrene/propylene oxide cogeneration plant is concentrated by evaporation technology. The concentrated high salt-containing wastewater is incinerated, while the distilled water from salt removal is sent to biochemical treatment, which solves the problem that salt-containing wastewater cannot be biochemically treated. This set of equipment can not only reduce the cost of SMPO wastewater treatment, but also save land, which is very valuable for chemical plants or other devices.
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Detailed description
Overview
The wastewater produced in the SMPO production process is extremely difficult to treat due to its high temperature, high alkalinity and high chemical oxygen demand, resulting in the survival of biochemical treatment strains. However, biochemical methods are currently used to treat SMPO wastewater in China. In view of the salt-containing industrial wastewater from SMPO plant, Ruikai Chemical has developed a more concise multi-effect evaporation treatment equipment. The wastewater from styrene/propylene oxide cogeneration plant is concentrated by evaporation technology. The concentrated high salt-containing wastewater is incinerated, while the distilled water from salt removal is sent to biochemical treatment, which solves the problem that salt-containing wastewater cannot be biochemically treated. This set of equipment can not only reduce the cost of SMPO wastewater treatment, but also save land, which is very valuable for chemical plants or other devices.
Key Equipment
The key equipment of the process is shown in the figure, as shown in the table below:
| Serial Number | Equipment Name | Main material of equipment | Container Category | |
| 1 | three-effect evaporator | TA2 | I | |
| 2 | peroxide decomposer | TA2 | S30408 Forging S30408,TA2 | II |
Application example
The use of internal circulation technology, the development of integrated, low-footprint low-energy three-effect evaporator, for styrene/propylene oxide co-production plant wastewater treatment, not only make the wastewater treatment more low energy consumption, but also to ensure the effect of wastewater treatment, in addition, the use of integrated three-effect evaporator can not only save land, investment, operating costs can be greatly reduced.
Major customers in recent years:
| Serial Number | Project Name | Delivery time | Remarks |
| 1 | Dongming CITIC Ruihua New Materials Co., Ltd. 200000 tons/year styrene co-production 80000 tons/year propylene oxide plant | 2020.07 |
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