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Superposition oil hydrogenation device and method capable of producing isooctane

A technology of hydrogenation unit and superimposed oil, which is applied in the fields of hydrogenation treatment process, petroleum industry, and hydrocarbon oil treatment. It can solve the problems of excessive olefin content in ethanol gasoline, achieve high octane number, low saturated vapor pressure, and save investment cost effect

Pending Publication Date: 2020-02-11
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] This application provides a superimposed oil hydrogenation device and method capable of producing isooctane, which can solve the problem that the olefin content of ethanol gasoline will exceed the standard when the superimposed oil is added to ethanol gasoline

Method used

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  • Superposition oil hydrogenation device and method capable of producing isooctane
  • Superposition oil hydrogenation device and method capable of producing isooctane
  • Superposition oil hydrogenation device and method capable of producing isooctane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0127] The composition of superimposed oil produced by oligomerization of isobutene in a refinery is shown in Table 3. The superimposed oil flow rate is 10.0 tons / hour, and the annual processing capacity is 84,000 tons. The sulfur content in the composite oil is 40mg / kg.

[0128] Table 3 Composite oil composition

[0129]

[0130] In order to produce gasoline blending components that meet the requirements of the olefin volume fraction ≤ 15% as required by the automotive gasoline standard (GB 17930-2016), the superimposed oil is treated with the hydrogenation unit provided in the embodiment of the application, The main operating conditions are shown in Table 4.

[0131] Table 4 Main Equipment Operating Conditions

[0132]

[0133]

[0134] In catalytic distillation hydrogenation tower 1, C 8 Olefins are hydrogenated to C 8 The single pass conversion rate of alkane is 99%; In hydrogenation reactor 6, C 12 Olefins are hydrogenated to C 12 The one-pass conversion ra...

Embodiment 2

[0140] The hydrogenation reactor feed rate is 3000kg / h, and other conditions are with embodiment 1. After hydrogenation, the flow rate and composition of the resulting mixture of isooctane and heavy oil are shown in Table 6.

[0141] Table 6 Composition and flow rate of mixture of isooctane and heavy oil

[0142]

[0143]It can be seen from Table 6 that the olefin mass content of the produced isooctane-heavy oil mixture is 2.88%, and the liquid standard volume content is 2.72%, which are 1.30 percentage points and 1.20 percentage points lower than those of Example 1, respectively. When the feed flow rate of the reactor and the quench oil flow rate increase, that is, when the material circulation volume between the catalytic distillation hydrogenation tower 1 and the hydrogenation reactor 6 increases, the olefin content in the mixture will decrease.

Embodiment 3

[0145] The produced isooctane was taken out of the device as a product, and other conditions were the same as in Example 2.

[0146] After hydrogenation, the content of 2,4,4-trimethylpentane in the produced isooctane is 77.0% (mass), and this part of isooctane is taken out of the device separately as a product; the composition and flow of the produced heavy oil are shown in Table 7. As can be seen from Table 7, C in the heavy oil product 12 Olefin, C 16 The volume fractions of olefins are 19.40% and 0.75% respectively, the overall fraction is 20.15%, and the liquid standard volume flow rate is 1.34m 3 / h, its volume flow is very small, only accounting for 134.00m of the total raw gasoline in the gasoline pool of the refinery 3 1.0% of / h. When transferred into the gasoline blending pool of the plant, the total olefin volume content in the gasoline pool increased from 14.12% to 14.18%, and the increase was very small. The olefin volume fraction after blending met the index...

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Abstract

The invention discloses a superposition oil hydrogenation device and method capable of producing isooctane, and belongs to the technical field of petrochemical engineering. The device comprises a catalytic distillation hydrogenation column, a condenser, a reflux tank, a reboiler, a first compressor and a hydrogenation reactor; the top of the catalytic distillation hydrogenation column is connectedwith the condenser, the condenser is connected with one inlet of the reflux tank, one outlet of the reflux tank is connected with the first compressor, and the other outlet of the reflux tank is connected with the catalytic distillation hydrogenation column; the reboiler is arranged at the bottom of the catalytic distillation column; and the bottom of the hydrogenation reactor is connected with the catalytic distillation hydrogenation column. According to the superposition oil hydrogenation device and method capable of producing the isooctane, olefin in superimposed oil can be saturated, requirements of the superposition oil as a vehicle gasoline blending component are met and the isooctane is produced as needed, a hydrogenation reaction is separately carried out on different components in the superimposed oil through the catalytic distillation column and the hydrogenation reactor, the equipment and operation costs can be reduced, and the purpose of energy saving and flexible operation is achieved.

Description

technical field [0001] The present application relates to the technical field of petrochemical industry, in particular to a superimposed oil hydrogenation device and method capable of producing isooctane. Background technique [0002] On September 7, 2017, the State Administration of Quality Supervision and the Standardization Management Committee issued and simultaneously implemented two standards, GB18351 "Ethanol Gasoline for Vehicles (E10)" and GB 22030 "Ethanol Gasoline Blending Components for Vehicles". It is stipulated that in addition to ethanol, the content (mass fraction) of other organic oxygenates in vehicle ethanol gasoline (E10) (VIB) shall not exceed 0.5% and shall not be artificially added; on September 13, 2017, 15 ministries and commissions including the National Development and Reform Commission jointly issued the The Notice on the Implementation Plan for Expanding the Production of Biofuel Ethanol and Promoting the Use of Ethanol Gasoline for Vehicles” de...

Claims

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Application Information

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IPC IPC(8): C10G65/02
CPCC10G65/02C10G2300/202C10G2300/305C10G2300/4006C10G2300/4012C10G2300/70
Inventor 刘成军李涛孙方宪吕晓东李倞琛段宏毅周璇
Owner BC P INC CHINA NAT PETROLEUM CORP
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