Demister for evaporative crystallization

Abstract

The utility model discloses a demister for evaporative crystallization, which comprises a separator barrel, a top cylindrical section, rib plates, a frustum baffle, a conical impact plate and a pull rod, a seal head is arranged at the upper end of the separator barrel, and a liquid-phase material outlet is formed in the lower end of the separator barrel; the side wall of the separator barrel is provided with a material inlet beside the liquid-phase material outlet and a gas-phase outlet beside the seal head, the top wall of the seal head is provided with a top cylindrical section, the inner wall of the separator barrel is provided with a plurality of rib plates, the top cylindrical section and the rib plates are lapped with a plurality of frustum baffles layer by layer, and the frustum baffles are provided with a plurality of baffle plates. Conical impact plates are arranged between the frustum baffles at intervals, and a pull rod is arranged on the top wall of the end socket. Through the mode, according to the demister for evaporative crystallization, the zigzag and inclined gas channel is formed through the multiple stages of demisting units, so that collision and turning of mist are accelerated, the demisting efficiency is effectively improved, meanwhile, an external demister is replaced, and the equipment cost is remarkably reduced.

Description

Technical Field

[0001] The utility model relates to the field of demisters, in particular to a demister for evaporation and crystallization. Background Art

[0002] As we all know, in gas-liquid mass transfer and heat transfer unit operations such as evaporation and distillation, close contact and separation between the two phases are used to promote the transfer of components between the phases, thereby achieving purposes such as liquid or gas purification. In these processes, the gas phase leaving the gas-liquid mass transfer element will inevitably carry a certain number of droplets or liquid foam of varying sizes. In subsequent process steps, tiny particles suspended in the gas phase may also form. When the system being processed is relatively complex, gas-phase chemical reactions between components may also generate even smaller particles. Typically, it is necessary to separate the droplets entrained by the gas phase, which is called demisting.

[0003] In the field of high-salt wastewater evaporation, most evaporator manufacturers or environmental protection companies currently use wire mesh demisters or baffle demisters. However, wire mesh demisters have a large resistance drop, are easy to clog and difficult to clean thoroughly, and need to be frequently replaced; baffle demisters have low efficiency, a complex manufacturing process, and high costs. Utility Model Content

[0004] The main technical problem solved by the utility model is to provide a demister for evaporation and crystallization, which constructs a tortuous and inclined gas channel through a multi-stage demister unit, thereby causing the mist to intensify collision and change direction, thereby effectively improving the demister efficiency, and at the same time replacing the external demister, significantly reducing the equipment cost.

[0005] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a demister for evaporation and crystallization, including a separator cylinder, a top cylindrical section, a rib plate, a frustum baffle, a conical impact plate, and a pull rod. The upper end of the separator cylinder is provided with a head and the lower end is provided with a liquid material outlet. The side wall of the separator cylinder is provided with a material inlet next to the liquid material outlet and a gas phase outlet next to the head. The top wall of the head is provided with a top cylindrical section, and the inner wall of the separator cylinder is provided with a number of rib plates. The top cylindrical section and the rib plate are overlapped with a number of frustum baffles in layers, and conical impact plates are arranged at intervals between the frustum baffles. The top wall of the head is provided with a pull rod, and the conical impact plates are fixed on the pull rod in layers.

[0006] In a preferred embodiment of the present invention, each of the conical impact plates and the adjacent frustum baffles form a demisting unit, at least two levels of demisting units are provided in the separator cylinder, and the layout height of the demisting units is lower than the gas phase outlet.

[0007] In a preferred embodiment of the present invention, the top and bottom surfaces of the frustum baffle are hollowed out, the frustum baffle is a hollow structure, and the radius of the conical impact plate is not less than the top surface radius of the frustum baffle.

[0008] In a preferred embodiment of the present invention, the frustum baffle is in the shape of a truncated cone and has a thickness of 4 to 6 mm. A gap is reserved between the frustum baffle and the inner wall of the separator cylinder.

[0009] In a preferred embodiment of the present invention, the conical impact plates are all in the shape of an inverted cone, and the thickness of the plates is 3-4 mm.

[0010] In a preferred embodiment of the present invention, the top cylindrical section is a cylindrical barrel.

[0011] In a preferred embodiment of the present invention, the number of the pull rods is 2 to 4.

[0012] In a preferred embodiment of the present invention, the space between the frustum baffle and the conical impact plate forms a gas channel.

[0013] The beneficial effect of the present invention is that the present invention provides a demister for evaporation and crystallization, which constructs a tortuous and inclined gas channel through a multi-stage demister unit, thereby causing the mist to intensify collision and change direction, thereby effectively improving the demister efficiency, and at the same time replacing an external demister, significantly reducing the equipment cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Among them:

[0015] Figure 1 This is an overall structural diagram of a preferred embodiment of a demister for evaporation and crystallization of the utility model. DETAILED DESCRIPTION

[0016] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] like Figure 1 As shown, the embodiment of the utility model includes:

[0018] A demister for evaporation and crystallization comprises a separator cylinder 3, a top cylindrical section 8, a rib plate 11, a frustum baffle 4, a conical impact plate 5, and a pull rod 5a. The upper end of the separator cylinder 3 is provided with a head 3a and the lower end is provided with a liquid material outlet 1. The side wall of the separator cylinder 3 is provided with a material inlet 10 next to the liquid material outlet 1 and a gas phase outlet 9 next to the head 3a. The top wall of the head 3a is provided with a top cylindrical section 8. The inner wall of the separator cylinder 3 is provided with a plurality of rib plates 11. A plurality of frustum baffles 4 are overlapped in layers at the top cylindrical section 8 and the rib plates 11. Conical impact plates 5 are arranged at intervals between the frustum baffles 4. The top wall of the head 3a is provided with a pull rod 5a. The conical impact plates 5 are fixed on the pull rod 5a in layers.

[0019] Each of the conical impact plates 5 and the adjacent frustum baffle 4 form a demisting unit. At least two levels of demisting units are provided in the separator cylinder 3 . The height of the demisting units is lower than the gas phase outlet 9 .

[0020] Furthermore, the top and bottom surfaces of the frustum baffle 4 are hollowed out, the frustum baffle 4 is a hollow structure, and the radius of the conical impact plate 5 is not less than the top surface radius of the frustum baffle 4 .

[0021] Furthermore, the frustum baffle 4 is in the shape of a truncated cone and has a thickness of 4 to 6 mm. A gap is reserved between the frustum baffle 4 and the inner wall of the separator cylinder 3 .

[0022] Furthermore, the conical impact plates 5 are all in the shape of an inverted cone, and the thickness of the plates is 3-4 mm.

[0023] Furthermore, the top cylindrical section 8 is a cylindrical barrel.

[0024] Furthermore, the number of the pull rods 5a is 2 to 4.

[0025] Furthermore, the space between the frustum baffle 4 and the conical impact plate 5 forms a gas channel.

[0026] In this solution, the secondary steam carrying a certain number of droplets or liquid foams of varying sizes inside the separator cylinder 3 of the evaporator crystallizer undergoes several collisions and changes in direction, and the gas flows out at a certain speed in the tortuous and inclined gas channel. Since the flow direction is changed multiple times, the droplets, under the action of inertia, collide with the surface of the frustum baffle 4 and are captured. Under the action of gravity, they gradually gather downward to the bottom section of the frustum baffle 4 and flow out.

[0027] Compared with the existing technology, this solution has low resistance drop, large processing capacity and excellent anti-clogging performance; it realizes the effective removal of droplets and mist in the secondary steam, ensures that the secondary steam quality meets the compressor import requirements, reduces the frequency of compressor surge and other faults, and improves the water quality of the secondary steam condensate; it is integrated inside the evaporation crystallizer, and an external demister is not required, thereby reducing production costs.

[0028] In summary, the utility model provides a demister for evaporation and crystallization, which constructs a tortuous and inclined gas channel through a multi-stage demister unit, thereby causing the mist to intensify collision and change direction, thereby effectively improving the demister efficiency, and at the same time replacing the external demister, significantly reducing the equipment cost.

[0029] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A mist eliminator for evaporation and crystallization, characterized in that: It includes a separator cylinder, a top cylindrical section, a rib plate, a frustum baffle, a conical impact plate, and a pull rod. The upper end of the separator cylinder is provided with a head and the lower end is provided with a liquid material outlet. The side wall of the separator cylinder is provided with a material inlet next to the liquid material outlet and a gas phase outlet next to the head. The top wall of the head is provided with a top cylindrical section. The inner wall of the separator cylinder is provided with a number of rib plates. The top cylindrical section and the rib plate are overlapped with a number of frustum baffles in layers. Conical impact plates are arranged at intervals between the frustum baffles. The top wall of the head is provided with a pull rod, and the conical impact plates are fixed on the pull rod in layers.

2. The demister for evaporation and crystallization according to claim 1, wherein Each of the conical impact plates and the adjacent frustum baffles form a demisting unit. At least two levels of demisting units are provided in the separator cylinder. The height of the demisting units is lower than the gas phase outlet.

3. The demister for evaporation and crystallization according to claim 1, wherein The top and bottom surfaces of the frustum baffle are hollowed out, the frustum baffle is a hollow structure, and the radius of the conical impact plate is not less than the radius of the top surface of the frustum baffle.

4. The demister for evaporation and crystallization according to claim 1, wherein The frustum baffle is in the shape of a frustum of a cone and has a thickness of 4 to 6 mm. A gap is reserved between the frustum baffle and the inner wall of the separator cylinder.

5. The demister for evaporation and crystallization according to claim 1, characterized in that: The conical impact plates are all in the shape of an inverted cone, and the thickness of the plates is 3-4 mm.

6. The demister for evaporation and crystallization according to claim 1, characterized in that: The top cylindrical section is a cylindrical barrel.

7. The demister for evaporation and crystallization according to claim 1, characterized in that: The number of the pull rods is 2 to 4.

8. The demister for evaporation and crystallization according to claim 1, characterized in that: The space between the frustum baffle and the conical impact plate forms a gas channel.

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