Liquid distributors for monolith catalysts and substrates

Patent metadata

Field	Value
Publication number	US-11148112-B2
Application number	US-201816628791-A
Country	US
Kind code	B2
Filing date	Jun 27, 2018
Priority date	Jul 6, 2017
Publication date	Oct 19, 2021
Grant date	Oct 19, 2021

Abstract

The present invention relates to different liquid distributors for monolith in multiphase applications. The present invention more particularly relates to distributor devices in the form of a single injection and multiple injection pipe distributors; shower head distributor comprising a plurality of holes for plunging liquid; a packing of spherical particles with a pre-distributor to split the liquid into manifold streams, before entry into the monolith bed. The present invention provides liquid distributors for monolith in multiphase applications providing improved liquid distribution into the monolith bed resulting in uniform fluid flow in each channel so as to make maximum use of the catalyst surface area.

First claim

The invention claimed is:

1. A device for distributing a liquid flow stream downwardly into a monolith bed having a monolith surface, comprising:
a. an enclosed vessel comprising inlet port to hold an inlet feed axial pipe through a connector at centre position in vessel to feed liquid;
b. two side inlet ports at the top peripheral of the vessel for gas phase entry;
c. an output of inlet feed pipe for recovering liquid either through single drip (single pipe distributor) or the said output transforming into multiple nozzles having nozzle exits downstream symmetrically spaced to distribute liquid in a uniform fashion across the cross section of monolith; and
d. sufficient space of 0.1 to 0.6 times the bed diameter interposed in between the nozzle exits and the monolith surface wherein liquid and gas communicate before entering the monolith bed.

2. The device as claimed in claim 1 , wherein the ratio of the diameter of the pipe distributor with the diameter of bed (d dist /d bed ) is a variable within 0.04 to 0.4.

3. The device as claimed in claim 2 , wherein the value of d dist /d bed ≈0.17 offers an appropriate distribution without excessive pressure drop.

Assignees

• Indian Institute Tech Delhi

Inventors

• Roy Shantanu
• Chugh Deepali

Classifications

• B01J2219/2419

  for the reactants · CPC title

• B01J2219/185

  vertical · CPC title

• B01J2219/2428

  Catalysts coated on the surface of the monolith channels · CPC title

• B01J19/32

  Packing elements in the form of grids or built-up elements for forming a unit or module inside the apparatus for mass or heat transfer · CPC title

• B01J19/2485

  Monolithic reactors · CPC title