SU697171A1 - Apparatus for purifying raw hydrocarbons - Google Patents

Description

one

The invention relates to the field of chemistry and can be used for the purification of liquid hydrocarbon raw materials, in particular raw methanol, from soluble impurities on cation exchangers.

Raw methanol contains a certain amount of impurities, the presence of which is due to the insufficient selectivity of the catalyst, the process parameter and the presence of various impurities in the gas, which are rather difficult to separate.

In the purification of raw methanol, water and alkaline rectification, adsorption, and chemical cleaning of manganese oxide ..1 with potassium or hydrogen peroxide 1 are used.

However, these methods do not provide the necessary degree of purification.

A device for cleaning hydrocarbon feedstock is known, which comprises a cylindrical body with a conical perforated grid, above which a horizontal grid is located, which are interconnected by nozzles. Such a construction ensures the simultaneous existence of the expanded and filtering zones in

layer and brings the process closer to the mode of ideal displacement 2.

However, this device does not prevent gas losses through the lateral surface of the fountain core during the upward movement of the gas flow through the contact zone and partial mixing of gases along the layer height, and intensive radial mixing of the phases leads to iiOTepe of the driving force of the process.

In addition, the device of the upper horizontal grid leads to the accumulation of catalyst particles on its surface, the formation of stagnant zones that violate the mode of operation of the device. An uneven distribution of the gas flow over the cross section of the device is also observed, and a bubble-like overshoot of the dispersion phase is possible.

The aim of the invention is to increase the cleaning efficiency, full use of the active surface of the cation exchanger and

0 reduced consumption of the latter.

Claims (2)

The device is equipped with an additional distribution insert, made in the form of a truncated perforated cone. installation 1) above the lattice at a distance of | 6––12 diameters of cationite grains. The angle of repose is chosen equal to 25 - 30 °. The drawing shows ycTpovicTBo for oily methanol on cation exchangers. The device includes a housing 1, a perforated Nuk) conical re 2, installed under yiJiOM 27 to a horizontal plane II, is provided with a center; perforated cone, set the base to meet the flow of the flow. An overflow pocket 7, HJTytser 8 methanol outlet and 1pluter 9 unloading K1 sludge are mounted inside the separating device. The device works as follows. Meta-iol-rectificate with a temperature of no more. after the main discharge column on the E is through the pump and the water supply pipe of the pipe 3 to the distribution circuit 1). The BCA is exposed to the ethanol. The ethanol is pumped through the insert B above the surface H) of the points (). spread) 180 degrees and the downstream flow passes through the layer of cation exchanger 4. At the same time, a post is passed on the 1st junction; its flow in the radial direction is through the |) without insertion hole 5. This is due to that the truncated non-perforated cone is set by the base to the forward flow post. In this case, the static pressure in the upper part of the insert is somewhat (the same as in the more i.nii of the lower part and is compensated by the flow of fluid in the radial direction beyond the insert, with connection to the flow from the padspace) CJHHHicHiibni the fluid flow passes through the electrical circuit 2 to the senaracic device 6, where the separation of mechanical impurities proceeds. Yes. mc accumulating mechanical impurities in the lower part of the device 6, njjycer 9 is provided. by installing the latter above the lattice on a height of 6 to 12 diameters of the cationite grains. The perforation of the insert for the radial flow intensifies the peromershvanna discrete mass on its lateral surface. The invention of the Device d; 1I cleaning liquid hydrocarbon raw materials, mainly meta} {ol, from soluble substances, contains a cylindrical Cornus with a conical perforated hole and s, 1 m of the cation exchanger, with the aim of increasing efficiency cleaning, n (j. ditch of grains of cation exchanger. And CT (J4 N and K and Gn form. vi and and, taken into account in the examination. Karavaev M.M. . 2. Copyright svdedeg.i.stvo USSR, N9 223778, cl. B 01 T 1/22, I9H8 (prototype).