Absorption stabilization system, its working process and application, and a method for preparing stable gasoline
A technology that absorbs and stabilizes systems and workflows, and is applied in gasoline stabilization, hydrocarbon oil cracking, and hydrocarbon oil treatment, and can solve problems such as increasing the energy consumption of stabilization towers
Active Publication Date: 2017-06-16
CNOOC OIL & PETROCHEMICALS CO LTD +2
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Problems solved by technology
[0006] The purpose of the present invention is to overcome the defect of increasing the energy consumption of the stabilizing tower by self-denying the gasification and separation effect of the primary heat exchanger of the deethanized gasoline-stabilizing gasoline in the existing absorption stabilization system process, and providing a A new flow of the absorption stabilization system for reducing the energy consumption of the stabilization tower by feeding the way
Method used
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Embodiment
[0066] Embodiment is used to illustrate the workflow that the present invention provides absorption stabilization system
[0067] Such as figure 2 As shown, the following improvements have been implemented compared to the comparative process:
[0068] 1. A gas-liquid separation tank (number VN1) for the feed of the stabilizing tower is added between the primary heat exchanger E305 of the deethanized gasoline and the stabilizing gasoline and the stabilizing tower T304, and the operating pressure of VN1 is set at 1.15MPa.
[0069] 2. A new gas phase feed port was opened at the 30th plate above the original feed port of the stabilization tower;
[0070] 3. Set up the gas phase feed line connecting VN1 and the 30th plate of the stabilization tower;
[0071] 4. The VN1 liquid phase is automatically pressed into the 23rd plate of the stabilization tower.
[0072] The specific operation is: deethanized gasoline (121.8°C, 1.26MPag, 96.50t / h) is boosted to 1.8MPag by the bottom oil...
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The invention provides an absorption stabilizing system and a working process and application thereof as well as a method for preparing stabilized petrol. The working process comprises the following steps: arranging a gas-liquid separator between a stabilizing tower feed heat exchanger and a stabilizing tower; arranging a gas phase inlet above an original feeding opening of the stabilizing tower, wherein the gas phase inlet is connected with the gas-liquid separator; self-pressing gas phase oil of the gas-liquid separator into the stabilizing tower through the gas phase inlet, and further self-pressing liquid phase oil of the gas-liquid separator into the stabilizing tower along the existing working process through the original feeding opening. By the working process, cold reflux of the stabilizing tower can be reduced, reduction in the cooling load at the top of the stabilizing tower and the reboiling load at the bottom of the stabilizing tower can be facilitated, and through a buffering action of the gas-liquid separator, the operation of the stabilizing tower can be smoothened.
Description
technical field [0001] The invention belongs to the field of petroleum processing, and in particular relates to a new process for reducing energy consumption of an absorption stabilization system by changing the feeding mode of a stabilization tower, an absorption stabilization system and its application, and a method for preparing stabilized gasoline. Background technique [0002] The absorption and stabilization system is an important part of secondary processing equipment for crude oil such as catalytic cracking, delayed coking, and hydrocracking. Its role is to separate the rich gas and crude gasoline (or crude naphtha) in the main fractionation tower system into dry gas, liquid hydrocarbons and stable gasoline (or crude naphtha) with qualified vapor pressure by means of absorption and rectification. naphtha). [0003] Due to the different arrangements of absorption and desorption, absorption stabilization usually has two processes: single tower and double tower. The s...
Claims
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IPC IPC(8): C10G11/00C10G9/00C10G47/00
CPCC10G7/02C10G2400/02
Inventor 吴青陈涌涛李国庆侯章贵杨纪王天宇
Owner CNOOC OIL & PETROCHEMICALS CO LTD