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向含有间位TDA的焦油加入邻位TDA,通过闪蒸,间位TDA减少,邻位增加,而焦油浓度不变,部分间位得到回收。通过模拟计算,找出温度、邻位配比对回收效果的影响规律,发现邻位配比越大则回收率越高,而温度对回收效果的影响很小。以年效益为目标,设备和操作费用同时考虑,以邻位配比为变量,求得它们之间的关系曲线,最后得到较优的邻位配比范围2～3,当取2时,年经济效益为536万元。
Adjacent TDA is added to tar containing meta TDA. By flashing, the meta TDA is decreased and the ortho-position is increased, while the tar concentration is not changed, and some meta-positions are recovered. Through the simulation calculation, find out the rule of the influence of the temperature and the ortho-ratio on the recovery effect, and find that the recovery ratio is higher when the ratio of the ortho-position is higher, and the effect of the temperature on the recovery effect is small. Taking the annual benefit as the goal, the equipment and operation costs are taken into consideration simultaneously, and the relationship between them is obtained by taking the o-bit ratio as the variable, and finally the optimal ratio range of the ortho-position is obtained from 2 to 3. When 2 is taken, The economic benefit is 5360000 yuan.