Alkylation reaction product two-tower thermal coupling and heat pump combined separation process and separation device

The invention discloses a two-tower thermal coupling and heat pump combined separation process and device for an alkylation reaction product, which adopts two conventional rectifying towers for partial thermal coupling and simultaneously applies a heat pump rectification technology to realize separation of the alkylation reaction product. The two technologies are perfectly combined by adjusting the separation sequence, the energy consumption and the operation cost of the whole separation process can be greatly reduced when the separation indexes which are the same as those of the existing process are obtained by utilizing the separation process, and the separation process has remarkable practicability and technical economy. Under the condition that public engineering conditions are met, an intermediate reboiler is additionally arranged, and a low-quality heating medium is adopted, so that the operation cost can be further reduced. 本发明公开了一种烷基化反应产物两塔热耦合与热泵组合分离工艺及装置，采用两个常规精馏塔部分热耦合，同时应用热泵精馏技术，实现烷基化反应产物的分离。通过调整分离顺