HIGH PURITY TOLUENE RECOVERY FROM PLATFORMATE BY EXTRACTIVE DISTILLATION WITH PHENOL

林正仙; 蒋蕴瑶; 孟志光

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HIGH PURITY TOLUENE RECOVERY FROM PLATFORMATE BY EXTRACTIVE DISTILLATION WITH PHENOL

更新时间：2025-12-16

- HIGH PURITY TOLUENE RECOVERY FROM PLATFORMATE BY EXTRACTIVE DISTILLATION WITH PHENOL
- CIESC Journal Issue 1, (1959)
- 作者机构：
  
  石油工业部石油科学研究院,石油工业部石油科学研究院,石油工业部石油科学研究院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 June 1959，
  
  Published：25 June 1959
- 稿件说明：
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林正仙, 蒋蕴瑶, 孟志光. HIGH PURITY TOLUENE RECOVERY FROM PLATFORMATE BY EXTRACTIVE DISTILLATION WITH PHENOL[J]. CIESC Journal, 1959, (1).
DOI：

林正仙, 蒋蕴瑶, 孟志光. HIGH PURITY TOLUENE RECOVERY FROM PLATFORMATE BY EXTRACTIVE DISTILLATION WITH PHENOL[J]. CIESC Journal, 1959, (1). DOI：

摘要

为了提供以苯酚为溶剂用抽提蒸馏法从铂重整生成油中抽取纯甲苯的工业装置设计依据和操作条件

进行了日处理量为250公斤的中型试验。抽提蒸馏塔为一直径200毫米

拥有44个塔盘的泡帽塔。铂重整生成油先经预分馏切割成70—119℃馏份

其中苯含量为0.8%（重量）

甲苯含量为48%（重量）。然后将该馏分进行抽提蒸馏

合理操作条件为酚油比4:1（体积比）;回流比4.5;油进口温度120℃;酚进口温度130℃。精馏段塔盘数为19

汽提段塔盘数为20

酚回收段塔盘数为5。产品经酸碱洗涤和再蒸馏后为硝化级纯度的甲苯

抽提蒸馏的甲苯收率可达97—98%（重量）。如包括预分馏损失

则甲苯的收率为96%（重量）。酸碱洗涤和再蒸馏损失一般可按3%计

因此

纯甲苯净收率为93%（重量）。试验结果提供了工业装置的设计数据。

Abstract

Design data for high purity toluene recovery from platformate by extractive distillation with phenol

were obtained by a pilot plant study. The extractive distillalations column

200mm in diameter

possessed 44 bubble cap plates and had a Capacity o?processing 250 kilograms of feed per day. The platformate was first prefractionated to 70-117℃

which contained 0.8% benzene and 48% toluene by weight. The heart cut was then used as the feed for the extractive distillation. The recommended operating conditions were as follows: phenol/feed ratio

4; reflux ratio

4-5; feed temperature

120℃; phenol inlet temperature

130℃. The actual plates of rectifying

stripping and phenol recovery section were 19

20 and 5 respectively. The recovery of nitration grade toluene from the feed was 97-98%. When losses in prefractionation

acid washing and redistillation were included

the net recovery of toluene from the platformate was 93%. The result of this study gave the data for designing of full scale production plants.

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