CN219308681U

CN219308681U - Steam combination device in residual liquid recycling process

Info

Publication number: CN219308681U
Application number: CN202222301152.8U
Authority: CN
Inventors: 赵启龙; 朱桂荣; 马馨冉; 王芳; 石磊; 曹鹏
Original assignee: Leling Liwei Chemicals Co ltd
Current assignee: Leling Liwei Chemicals Co ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2023-07-07
Anticipated expiration: 2032-08-31

Abstract

A steam combined device package in a raffinate recycling process is used for heating a reaction kettle by using low-pressure steam which is used later through hierarchical control of steam temperature gradient, so that heat is fully utilized, resource waste is reduced, and production cost is controlled.

Description

Steam combination device in residual liquid recycling process

Technical Field

The utility model relates to a dangerous waste recycling field, concretely relates to steam aggregate unit in raffinate resourceful treatment process.

Background

With the development of industry, the discharge of hazardous waste from industrial production processes is increasing. The annual hazardous waste production worldwide is estimated to be 3.3 hundred million tons. Because of the serious pollution and potential serious impact of hazardous waste, which has been called "political waste" in industrially developed countries, the public is very sensitive to hazardous waste problems, and the setting up of hazardous waste disposal sites in areas where they reside, plus the high disposal costs of hazardous waste, are opposed to some companies trying to transfer hazardous waste to industrially undeveloped countries and regions.

Which optimal, practical method to select for a certain waste is dependent on a number of factors, such as the composition, nature, state, climate conditions, safety criteria, treatment costs, operating and maintenance conditions of the waste. Although there are many methods that can be successfully used to treat hazardous waste, the commonly used treatment methods are still summarized as physical treatment, chemical treatment, biological treatment, heat treatment and solidification treatment. However, most of the dangerous waste disposal methods commonly used in the current market are in a state of 'less production and more production' for producing a large amount of energy sources, and the energy sources in the recycling process are used and minimized, so that the resource waste, the economic loss and the environmental pollution are caused. The utility model provides a steam combined device in the residual liquid recycling process, which can reasonably distribute and utilize energy sources in the recycling production process and reduce energy consumption.

Disclosure of Invention

The utility model aims at: in order to solve the problem of improper energy use waste in the recycling production process, the energy source in the production process is reasonably used, so that the energy source waste is avoided, and the production cost is reduced.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a steam combination device in a raffinate recycling process comprises: 1. acetophenone tower 2, light ends removal tower 3, reaction kettle 4, acetophenone tower reboiler high pressure steam pipe 5, acetophenone tower reboiler low pressure steam pipe 6, acetophenone tower reboiler 7, light ends removal tower reboiler high pressure steam pipe 8, light ends removal tower reboiler low pressure steam pipe 9, light ends removal tower reboiler 10, reaction kettle low pressure steam pipe; the method is characterized in that: the acetophenone tower is fixedly connected with the acetophenone tower reboiler through a pipeline; the high-pressure steam pipe of the acetophenone tower reboiler is fixedly arranged at the upper part of the acetophenone tower reboiler; the low-pressure steam pipe of the acetophenone tower reboiler is fixedly arranged at the lower part of the acetophenone tower reboiler; the light component removing tower is fixedly connected with a light component removing tower reboiler through a pipeline; the high-pressure steam pipe of the light-component removing tower reboiler is fixedly arranged at the upper part of the light-component removing tower reboiler; the low-pressure steam pipe of the light-component removing tower reboiler is fixedly arranged at the lower part of the light-component removing tower reboiler; the light component removing tower is fixedly connected with the acetophenone tower through a pipeline; the acetophenone tower reboiler low-pressure steam pipe and the light component removal tower reboiler low-pressure steam pipe are fixedly arranged on the reaction kettle low-pressure steam pipe; the reaction kettle low-pressure steam pipe is fixedly arranged on the reaction kettle.

Preferably, the temperature of high-pressure steam introduced into the high-pressure steam pipe of the acetophenone tower reboiler is 220 ℃, the temperature of the acetophenone tower can be heated to be higher than the boiling point of acetophenone, and acetophenone is distilled from the top of the tower;

preferably, the temperature of high-pressure steam which is introduced into the high-pressure steam pipe of the reboiler of the light component removal tower is 180 ℃ and cannot be higher than 202 ℃, the temperature of the light component removal tower can be heated to be higher than the boiling point of light components in crude acetophenone, and light component impurities are distilled out from the top of the tower;

preferably, the temperature of the low-pressure steam pipe of the reaction kettle is 150 ℃, the reaction temperature in the reaction kettle can be controlled to be 135 ℃, and the raw materials can react;

compared with the prior art, the utility model has the beneficial effects that:

the reaction kettle is heated by using low-pressure steam which is used later through hierarchical control of steam temperature gradient, so that heat is fully utilized, resource waste is reduced, and production cost is controlled.

Drawings

FIG. 1 is a conceptual diagram of a system;

in the drawing the view of the figure,1 isThe acetophenone tower 2 is a light-off tower 3, the reaction kettle 4 is an acetophenone tower reboiler high-pressure steam pipe 5 is an acetophenone tower reboiler low-pressure steam pipe 6 is an acetophenone tower reboiler 7 is a light-off tower reboiler high-pressure steam pipe 8 is a light-off tower reboiler low-pressure steam pipe 9 is a light-off tower reboiler 10 is a reaction kettle low-pressure steam pipe.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The reboiler mentioned in the present utility model is YKA type round block hole graphite heat exchanger available in market or private order.

A steam combination device in a raffinate recycling process comprises: 1. acetophenone tower 2, light ends removal tower 3, reaction kettle 4, acetophenone tower reboiler high pressure steam pipe 5, acetophenone tower reboiler low pressure steam pipe 6, acetophenone tower reboiler 7, light ends removal tower reboiler high pressure steam pipe 8, light ends removal tower reboiler low pressure steam pipe 9, light ends removal tower reboiler 10, reaction kettle low pressure steam pipe; the method is characterized in that: the acetophenone tower is fixedly connected with the acetophenone tower reboiler through a pipeline; the high-pressure steam pipe of the acetophenone tower reboiler is fixedly arranged at the upper part of the acetophenone tower reboiler; the low-pressure steam pipe of the acetophenone tower reboiler is fixedly arranged at the lower part of the acetophenone tower reboiler; the light component removing tower is fixedly connected with a light component removing tower reboiler through a pipeline; the high-pressure steam pipe of the light-component removing tower reboiler is fixedly arranged at the upper part of the light-component removing tower reboiler; the low-pressure steam pipe of the light-component removing tower reboiler is fixedly arranged at the lower part of the light-component removing tower reboiler; the light component removing tower is fixedly connected with the acetophenone tower through a pipeline; the acetophenone tower reboiler low-pressure steam pipe and the light component removal tower reboiler low-pressure steam pipe are fixedly arranged on the reaction kettle low-pressure steam pipe; the reaction kettle low-pressure steam pipe is fixedly arranged on the reaction kettle.

During operation, steam with different temperatures respectively enters the acetophenone tower reboiler and the light component removal tower reboiler, after heat transfer is completed, high-pressure steam is changed into low-pressure steam, the low-pressure steam is conveyed into a reaction kettle low-pressure steam pipeline through a reboiler low-pressure steam pipeline, finally, the steam is introduced into the reaction kettle, the temperature in the reaction kettle is raised by utilizing waste heat, and high-efficiency utilization of heat is completed.

The method is characterized in that the low-pressure steam used later is used for heating the reaction kettle through the hierarchical control of the steam temperature gradient, so that the heat is fully utilized, the resource waste is reduced, and the production cost is controlled.

Claims

1. A steam combination device in a raffinate recycling process comprises: acetophenone tower (1), light ends removing tower (2), reaction kettle (3), acetophenone tower reboiler high pressure steam pipe (4), acetophenone tower reboiler low pressure steam pipe (5), acetophenone tower reboiler (6), light ends removing tower reboiler high pressure steam pipe (7), light ends removing tower reboiler low pressure steam pipe (8), light ends removing tower reboiler (9), reaction kettle low pressure steam pipe (10); the method is characterized in that: the acetophenone tower is fixedly connected with the acetophenone tower reboiler through a pipeline; the high-pressure steam pipe of the acetophenone tower reboiler is fixedly arranged at the upper part of the acetophenone tower reboiler; the low-pressure steam pipe of the acetophenone tower reboiler is fixedly arranged at the lower part of the acetophenone tower reboiler; the light component removing tower is fixedly connected with a light component removing tower reboiler through a pipeline; the high-pressure steam pipe of the light-component removing tower reboiler is fixedly arranged at the upper part of the light-component removing tower reboiler; the low-pressure steam pipe of the light-component removing tower reboiler is fixedly arranged at the lower part of the light-component removing tower reboiler; the light component removing tower is fixedly connected with the acetophenone tower through a pipeline; the acetophenone tower reboiler low-pressure steam pipe and the light component removal tower reboiler low-pressure steam pipe are fixedly arranged on the reaction kettle low-pressure steam pipe; the reaction kettle low-pressure steam pipe is fixedly arranged on the reaction kettle.