CN201200888Y - High-efficiency chemical reactor combined with stirred tank and static mixer - Google Patents

Abstract

The utility model discloses a high-efficiency chemical reactor combining a stirred tank and a static mixer, which comprises the stirred tank (1), a material recycle pump (3), the static mixer (2), and a connecting pipeline forming a loop, wherein the stirred tank (1), the material recycle pump (3) and the static mixer (2) are connected to be a closed loop by the connecting pipeline; the upper part of the stirred tank (1) is a feed opening, the lower part of the stirred tank is a discharge opening; and a stirring paddle is arranged in the stirred tank (1). The chemical reactor strengthens mass transfer and heat transfer by measures of stirring in the tank and outer circulation, and the static mixer further accelerates the mass transfer and heat transfer processes, thereby improving the utilization rate of the chemical reactor, weakening the amplification effect to a great extent, and improving the product quality; and the chemical reactor is simple in structure, stable and reliable in performance, economic and applicable.

Description

High-efficiency chemical reactor combined with stirred tank and static mixer

technical field

The utility model relates to an industrial reaction device for asphalt chemical modification. The invention belongs to the technical field of chemical reaction equipment manufacture.

Background technique

For two-phase or three-phase reactions, the macroscopic reaction rate depends on the slower of the mass transfer rate between the phases and the chemical reaction rate. If the rate-determining step of a heterogeneous reaction is mass transfer between phases, there is no doubt that to increase the rate of the entire reaction, we must start with the enhancement of mass transfer. In the production of epoxy asphalt, the functionalization of asphalt is a typical heterogeneous reaction, and the control step is mass transfer; the reaction of converting the remaining small molecular compounds that functionally modify asphalt is also an interphase reaction. The rapid response of mass transfer control, if the temperature is not properly controlled or the mass transfer rate is not enough, it will seriously affect the performance of the reaction product, and finally affect the performance of epoxy asphalt. It can be seen that the enhancement of mass transfer in the production of epoxy asphalt is the key to obtain a final product with stable and reliable quality and excellent performance, and the enhancement of mass transfer has a direct relationship with the design of the chemical reactor. The same is true for reaction systems of many other materials.

CN01810595.5 provides a kind of method and device for preparing polyaniline, and this device is the loop that several parallel tubular reactors equipped with static mixers, a stirred tank and circulation pump are connected in series; A jacket was installed outside the reactor for temperature control. ZL200420023052.2 provides a similar method, the difference is that a heat exchanger is added in the loop to deal with the heat transfer problem caused by high-viscosity materials. CN1056895A discloses a device suitable for microbial fermentation. Its outstanding feature is that there is no stirring paddle in the reactor, but a baffle suitable for biological fermentation is provided to cooperate with a static mixer and a circulation pump.

In general, in batch reactors, it is a trend to use static mixers and external circulation in order to enhance the mass transfer effect; the reactors used are tailored according to the characteristics of each reaction system.

Contents of the invention

Technical problem: The purpose of this utility model is to provide a simple structure, stable and reliable performance, an economical and applicable high-efficiency chemical reactor combined with a stirred tank and a static mixer, which can meet the fast step of the reaction system is the multiphase rapid reaction of mass transfer between phases System of intermittent high-efficiency chemical reactors.

Technical solution: The high-efficiency chemical reactor combined with a stirred tank and a static mixer of the utility model includes a stirred tank, a material circulation pump, a static mixer and connecting pipes forming a loop; wherein: the stirred tank, the material circulation pump and the static mixer are composed of The connecting pipe connects it into a closed circuit, the upper part of the reactor is the inlet, the lower part is the outlet, and the reactor is equipped with a stirring paddle.

The top of the stirred reactor is equipped with a condensation reflux device. According to various reaction characteristics and material characteristics, the stirring paddle of the stirred reactor is one or a combination of turbine type, paddle type, pusher type, anchor type and screw ribbon type. The static mixer is a corrugated plate type, or a single helix type, or a double helix type or a horizontal strip type static mixer, and the static mixer is covered with an insulating layer. The stirred reactor is a jacketed structure, and the pipe is covered with an insulation layer. The installation positions of the static mixer and material circulation pump can be interchanged.

Beneficial effects: the mass transfer and heat transfer are enhanced through the two measures of internal stirring and external circulation, and the mass transfer and heat transfer process is further accelerated through the static mixer, which greatly improves the utilization rate of the equipment and weakens the amplification to the greatest extent. Effect, improved product quality; simple structure, stable and reliable performance, economical and applicable.

Description of drawings

Fig. 1 is a schematic structural view of Embodiment 1 of the present utility model.

Fig. 2 is a schematic structural view of the second embodiment of the present invention.

Detailed ways

The present invention is further described below by specific examples, but the examples are not limitations of the present utility model.

A high-efficiency chemical reactor combined with a stirred tank and a static mixer is characterized in that the reactor includes a stirred tank 1, a material circulation pump 3, a static mixer 2, and connecting pipes forming a loop; wherein: the stirred tank 1, the material circulation pump 3 and the static mixer 2 are connected into a closed circuit by connecting pipes, the upper part of the reactor 1 is the inlet, the lower part is the outlet, and the reactor 1 is provided with a stirring paddle.

A condensation reflux device can be added on the top of the stirred tank as required.

The installation positions of the static mixer and the material circulation pump in the high-efficiency chemical reactor combining the stirred tank and the static mixer can be interchanged.

The stirring paddle type of the stirring tank is optional to meet various reaction characteristics and material characteristics.

The paddle type of the stirring tank can be one or a combination of turbine type, paddle type, propulsion type and anchor type.

The model of the static mixer can be: corrugated plate type, single helix type, double helix type or horizontal bar type. It is better to use corrugated plate type.

This is a high-efficiency chemical reactor combined with a new type of stirred tank and a static mixer. It is characterized in that the reactor is a jacket structure, and the pipe is covered with an insulating layer.

Example 1:

Referring to Figure 1, it mainly includes: reactor, circulating pump, static mixer and its connected pipelines. Among them, the stirring paddle in the reaction kettle adopts the lower anchor type, the upper layer has six straight blade turbine type double-layer stirring paddles, the circulation pump adopts a special asphalt pump, and the static mixer adopts a corrugated plate type.

Example 2:

Referring to Figure 2, it mainly includes: reactor, circulation pump, static mixer and connected pipelines. Among them, a condensation reflux device is added to the reaction kettle, the stirring impeller adopts the lower frame type, the upper layer turbine type double-layer stirring impeller, the circulation pump adopts a non-leakage process pump, and the static mixer adopts a double-helix type.

Claims (6)

1. the efficient chemical reactor of stirred tank and static mixer combination is characterized in that this reactor comprises the connecting pipe in stirred tank (1), material circulating pump (3) and static mixer (2) and formation loop; Wherein: stirred tank (1), material circulating pump (3) and static mixer (2) connect into the loop of a closure by connecting pipe, and the top of reactor (1) is charging aperture, and the bottom is a discharging opening, and reactor is provided with paddle in (1).

2. the efficient chemical reactor of stirred tank according to claim 1 and static mixer combination is characterized in that the top of stirred autoclave (1) is provided with condensation reflux unit (4).

3. the efficient chemical reactor of stirred tank according to claim 1 and static mixer combination, the paddle that it is characterized in that stirred autoclave (1) is according to various response features and material characteristic, be turbine type, or oar formula, or pusher, or a kind of or combination in anchor formula and the screw rod helical-ribbon type.

4. the efficient chemical reactor of stirred tank according to claim 1 and static mixer combination, it is characterized in that static mixer (2) is a corrugated plate type, or the single-screw type, or double helical form or horizontal stripe type static mixer, the outer heat-insulation layer that coats of static mixer (2).

5. according to the efficient chemical reactor of claim 1 and 2 described stirred tanks and static mixer combination, it is characterized in that stirred autoclave (1) for jacket structured, pipeline coats heat-insulation layer outward.

6. the efficient chemical reactor of stirred tank according to claim 1 and static mixer combination is characterized in that the installation site of static mixer (2) and material circulating pump (3) can exchange.

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