The structured heat integrated distillation column

Nonlinear-wave based analysis and modeling of heat integrated distillation column

“…The terminal concentrations by wave model, namelyŶ t 1 , andX t n are very close to the actual final concentrations of Y t 1 , and X t n which confirms the validity of the simplified wave model. For the same section of the column, for example, the rectifying section (stages [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20], the moving distances of the profiles are quite different when Z f increases and decreases 2%, respectively. When Z f increases 2%, the moving distance is shorter (20.98-18.72, got from Table 3), which makes the deviation relatively small; On the contrary, when Z f decreases 2% the moving distance is longer (18.72-12.88) and it leads to a larger deviation.…”

“…However, such an energy-intensive process has been well known for its low energy efficiency of less than 10%. A variety of methods have between developed to improve the energy efficiency of distillation columns, among which the heat integrated distillation technology has attracted a large number of researchers since it was proposed by Mah and coworkers in the form of secondary reflux and vaporization (SRV) [2][3][4][5][6][7][8][9][10]. Many follow-up studies have been carried out and its superiority in energy efficiency over conventional distillation has been proved [7,[11][12][13][14][15][16][17][18][19].…”

Heat‐integrated distillation columns: Vapor recompression or internal heat integration?

“…In contrast, if the heat exchange is constrained, only a small increase of less than 2% in the energy demand of the investigated HIDiC configuration is observed. If such small energy penalties for constraint heat exchange could be generalized to other separations, it would be highly questionable, whether research and development aiming at new equipment design for distributed heat exchange along the height of the column-the focus of HIDiC research in recent years (cf., e.g., Bruinsma et al 26 )-is promising.…”

Adaptive Internal Model Control of a High‐Purity Heat‐Integrated Air Separation Column

“…Vanaki and Eslamloueyan presented a complex mathematical formulation for simulating a reactive heat-integrated distillation column [26]. Bruinsma et al described a unique proof of the principle test facility [27]. Lundberg and Bezanson solved the problem for model mismatch by using derivative feedback in robust generic model control [28].…”