CN201962222U

CN201962222U - Formaldehyde reactor

Info

Publication number: CN201962222U
Application number: CN2011200960898U
Authority: CN
Inventors: 章庆乐; 夏兆庆; 盛宝彬; 渠怀明
Original assignee: SHANDONG TUOBO HAOYUAN CHEMICAL CO Ltd
Current assignee: SHANDONG TUOBO HAOYUAN CHEMICAL CO Ltd
Priority date: 2011-04-05
Filing date: 2011-04-05
Publication date: 2011-09-07
Anticipated expiration: 2021-04-05

Abstract

The utility model provides a formaldehyde reactor, which comprises a tank body, wherein the tank body comprises an upper reaction chamber, a middle heat exchange chamber and a bottom finished product outlet; an air equalizing device is arranged in the reaction chamber; a tube plate is arranged between the reaction chamber and the heat exchange chamber and provided with a heat exchange tube for communicating the reaction chamber with the finished product outlet; an annular condensed water supply pipeline and an annular condensed water drainage pipeline are arranged on the outer wall of the tank body; and radiating fins which are distributed uniformly and extend along the radial direction of the heat exchange tube are arranged on the outer wall of the heat exchange tube. The reactor realizes stable reaction and good radiation effect.

Description

A kind of formaldehyde reaction device

Technical field

The utility model relates to a kind of Formaldehyde Production equipment, relates in particular to the formaldehyde reaction device of a kind of stable reaction and good heat dissipation effect.

Background technology

The general temperature of high-temperature gas that when reaction generates in the formaldehyde reaction device can reach 620-650 ℃, so controls reaction speed and raising radiating effect are the committed steps of safety, High-efficient Production.But present formaldehyde reaction device is not held accurately for above-mentioned key point.

The Heat Room that is generally used for formaldehyde products cooling is positioned at the below of reaction chamber, and the inside circulation has water of condensation, and the formaldehyde products that generates from reaction chamber is by running through the heat transfer tube of Heat Room, and inside and outside wall and water of condensation by heat transfer tube carry out heat exchange.Yet generalized case lower thermal exchanging chamber has only a heat exchange mouth of a river that is used to feed water and a heat exchange mouth of a river that is used for draining, because fluidic movement characteristic, the current of whole Heat Room are very inhomogeneous, also there is significant difference in water temperature, and particularly the Heat Room top away from the admission port can form a very big mobile very poor hot water lamination.Add still fundamentally to allow after the circulating pipe the even problem of current of whole Heat Room improve, thereby near a part of heat transfer tube heat exchange efficiency height at the mouth of a river, and low away from the heat transfer tube heat exchange efficiency at the mouth of a river.And because the spatial restriction, by the heat transfer tube that the metal hollow pipe is made, not ideal enough with the water of condensation contact area of Heat Room, this also has influence on the cooling-down effect of the formaldehyde of generation.

In addition, reactant gases directly enters reaction chamber from entering the mouth and reacts, and the reacting gas concentration in the reaction chamber is inhomogeneous, is difficult to controls reaction speed, causes reaction unstable, and transformation efficiency is not high, directly has influence on the quality of production and the efficient of formaldehyde.

Summary of the invention

The purpose of this utility model is at the existing in prior technology deficiency, and provide a kind of simple in structure, reasonable in design, stable reaction, the formaldehyde reaction device that whole Heat Room current are become evenly and the contact area of heat transfer tube and water of condensation is significantly increased.

To achieve these goals, the utility model provides a kind of formaldehyde reaction device, comprise tank body, described tank body comprises the reaction chamber on top, the Heat Room at middle part and the product outlet of bottom, be provided with tube sheet between described reaction chamber and the described Heat Room, described tube sheet is provided with the heat transfer tube that is communicated with described reaction chamber and described product outlet, wherein:

The described tank wall that is positioned at the described Heat Room outside is provided with ring-type water of condensation feedwater piping, on the outside of described ring-type water of condensation feedwater piping feed-water inlet is set, the inboard is provided with the water out of giving of 3-8 described Heat Rooms of equally distributed connection and described ring-type water of condensation feedwater piping;

The described tank wall that is positioned at the described Heat Room outside is provided with ring-type condensate draining pipe road, on the outside in described ring-type condensate draining pipe road drain outlet is set, the inboard is provided with the drain inlet in 3-8 described Heat Rooms of equally distributed connection and described ring-type condensate draining pipe road;

Be provided with the gas uniform device in the reaction chamber.

This gas uniform device have one be communicated with gas feed, the open ring-type in upper end mixes air drain.

The feed-water inlet of described ring-type water of condensation feedwater piping and the drain outlet in described ring-type condensate draining pipe road lay respectively at the relative both sides of described tank body.

The outer wall of described heat transfer tube is provided with 4-16 sheet heat radiation wing equally distributed, that radially extend along described heat transfer tube.

The beneficial effects of the utility model are: simple in structure, reasonable in design; The water of condensation feedwater is adopted different pipelines and the design of adopting a plurality of mouths of a river to be communicated with Heat Room with draining, and whole Heat Room current are become evenly, makes the working order that all heat transfer tubes reach does not have difference; The feed-water inlet of ring-type water of condensation feedwater piping lays respectively at the relative both sides of tank body with the drain outlet in ring-type condensate draining pipe road, utilizes the pressure-driven characteristic of liquid motion more to help the water of condensation of Heat Room to keep good flow state; Ring-type water of condensation feedwater piping and ring-type condensate draining pipe road can adopt identical material and structure, are beneficial to the outfit and the replacement of part; Heat transfer tube is provided with the heat radiation wing is significantly increased the contact area of heat transfer tube and water of condensation, remedies Heat Room owing to space constraint is brought heat transfer tube and the dissatisfactory defective of water of condensation contact area, and radiating effect is better.

Description of drawings

Fig. 1 is the one-piece construction figure of the utility model embodiment;

Fig. 2 is the structure iron of ring-type water of condensation feedwater piping of the present utility model;

Fig. 3 is heat transfer tube cross-sectional structure figure of the present utility model.

Wherein, Reference numeral is: 1, tank body; 2, reaction chamber; 3, tube sheet; 4, feedwater piping; 5, give water out; 6, drain outlet; 7, Heat Room; 8, heat transfer tube; 9, product outlet; 10, drain inlet; 11, drainage pipeline; 12, feed-water inlet; 13, gas uniform device; 14, gas feed; 15, venting port; 16, heat radiation wing.

Embodiment

For clearly demonstrating the technical characterstic of this programme,, this programme is set forth below by embodiment.

As shown in Figure 1, it is the one-piece construction figure of the utility model embodiment, its technical scheme is: comprise tank body 1, tank body 1 comprises the reaction chamber 2 on top, the Heat Room 7 at middle part and the product outlet 9 of bottom, be provided with gas uniform device 13 in the reaction chamber 2, this gas uniform device 13 has an open ring-type in upper end and mixes air drain, and this mixed air drain is communicated with gas feed 14; Be provided with tube sheet 3 between reaction chamber 2 and the Heat Room 7, tube sheet 3 is provided with the heat transfer tube 8 that is communicated with reaction chamber 2 and product outlet 9, tank body 1 outer wall that is positioned at Heat Room 7 outsides is provided with ring-type water of condensation feedwater piping 4, on the outside of ring-type water of condensation feedwater piping 4 feed-water inlet 12 is set, what the inboard was provided with four equally distributed connection Heat Rooms 7 and ring-type water of condensation feedwater piping 4 gives water out 5; Be positioned on tank body 1 outer wall in Heat Room 7 outsides and also be provided with ring-type condensate draining pipe road 11, on the outside in ring-type condensate draining pipe road 11 drain outlet 6 is set, the inboard is provided with the drain inlet 10 in four equally distributed connection Heat Rooms 7 and ring-type condensate draining pipe road 11.

The feed-water inlet 12 of ring-type water of condensation feedwater piping 4 and the drain outlet 6 in ring-type condensate draining pipe road 11 lay respectively at the relative both sides of tank body 1.

The outer wall of heat transfer tube 8 is provided with 12 heat radiation wings 16 equally distributed, that radially extend along heat transfer tube 8.

Unstripped gas enters tank body 1 from reacting gas inlet 14, after 13 processing of gas uniform device, entering reaction chamber 2 reacts, because formaldehyde proportion is bigger, downward along heat transfer tube 8, after cooling, come out from the product outlet 9 of the bottom of tank body 1, and the lighter unreacted of proportion is finished gas and is left tank body 1 from venting port 15.

Ring-type water of condensation feedwater piping 4 adopts identical material and structure with ring-type condensate draining pipe road 11.Under the effect of pressure, water of condensation enters Heat Room 7 upper stratas from four feed-water inlets 5 of feedwater piping 4, form the cold water layer, because cold water density is bigger, begin to sink, promote the water circulation of whole Heat Room 7, discharge Heat Room 7 from the drain outlet 6 of drainage pipeline 11 through hot water after the heat exchange, make the water of condensation and the extraneous good circulation that constantly forms of Heat Room 7, improve heat exchange efficiency.

Claims

1. formaldehyde reaction device, comprise tank body, described tank body comprises the reaction chamber on top, the Heat Room at middle part and the product outlet of bottom, is provided with tube sheet between described reaction chamber and the Heat Room, described tube sheet is provided with the heat transfer tube that is communicated with reaction chamber and product outlet, it is characterized in that:

The tank wall that is positioned at the described Heat Room outside is provided with ring-type water of condensation feedwater piping, on the outside of described ring-type water of condensation feedwater piping feed-water inlet is set, the inboard is provided with the water out of giving of 3-8 described Heat Rooms of equally distributed connection and described ring-type water of condensation feedwater piping;

The tank wall that is positioned at the described Heat Room outside is provided with ring-type condensate draining pipe road, on the outside in described ring-type condensate draining pipe road drain outlet is set, the inboard is provided with the drain inlet in 3-8 described Heat Rooms of equally distributed connection and described ring-type condensate draining pipe road;

Be provided with the gas uniform device in the reaction chamber.