CN206152778U - Fluidized bed air outlet separator in melamine production - Google Patents

Abstract

The utility model provides a fluidized bed air outlet separator in melamine production, it includes the fluidized bed jar body (1), lower part in the fluidized bed jar body (1) is equipped with molten salt heater (2), physically is equipped with air outlet (1a) in (1) top at the fluidized bed jar, its characterized in that: have in the fluidized bed jar body (1) one knockout drum (3), the one end and the air outlet (1a) of knockout drum (3) are linked together, and the equipartition has a set of whirlwind piece -rate system (4) on knockout drum (3), still is equipped with one trachea (5) on knockout drum (3), are equipped with overflow valve (5a) at the tip of trachea (5). The utility module is simple in structure and easy to use, the direct transformation of being convenient for on the existing equipment through generating silica gel content in the gas, reducing silica gel consumption, reducing manufacturing cost, provides the product quality.

Description

Fluid bed air-out port separation apparatus in a kind of Melamine Production

Technical field：

The utility model is related to the production equipment of melamine, is exactly specifically fluid bed in a kind of Melamine Production Air-out port separation apparatus.

Background technology：

In recent years, by world crisis and domestic real estate market regulation and control affected, melamine market all the way under It is sliding.Simultaneously reaching its maturity due to domestic one-step method melamine technology, and many intermediate items that newly started in recent years, The natively Melamine Market of saturation more sternness is made, each producer's survival pressure is huge.Current domestic each melamine factory The utilization of capacity of family only has 40% or so, much in the edge of loss, wants to be survived in such severe market, enters One step reduces cost is into the only way out.

In the production process of melamine, in fluid bed synthetic reaction process, catalyst silica gel and process gas are located always In fluidized state, and after reacting, generating gas can be sent to rear workshop section with air outlet, can carry silica gel secretly during this.Currently Cyclone separation system can not be totally separated from silica gel so that silica gel consumption reaches 7.5kg/ tons, super normal consumption 20%, primary rotation Wind separating effect declines, and causes usage cycles low.

Utility model content：

The utility model is exactly to overcome deficiency of the prior art, there is provided fluid bed goes out in a kind of Melamine Production Air port separator.

The utility model provides technical scheme below：

Fluid bed air-out port separation apparatus in a kind of Melamine Production, it includes fluid bed tank body, in fluid bed tank body Interior bottom is provided with molten salt heater, and at the top of fluid bed tank body air outlet is provided with, it is characterised in that：Have in fluid bed tank body One knockout drum, one end of knockout drum is connected with air outlet, and one group of cyclone separation system is evenly equipped with knockout drum, is separating A tracheae is additionally provided with tank, in the end of tracheae excessive valve is provided with.

On the basis of above-mentioned technical proposal, there can also be technical scheme below：

Described knockout drum is cone, and skimming net is provided with knockout drum, and in skimming baffle plate is just provided with the net.

One group of described cyclone separation system is that 45 ° of folder is equipped between 8, and two adjacent cyclone separation systems Angle.

Described cyclone separation system includes that primary cyclone is provided with air inlet in primary cyclone side A, in primary cyclone opposite side the second cyclone separator is communicated with, and the second cyclone separator is by pipeline b and knockout drum Connection.

Utility model advantage：

The utility model have the advantages that simple structure, it is easy to use, be easy to directly transform on existing.Additionally, The utility model is compared in prior art and had further the advantage that：

1st, the execution of strong guarantee technic index, effectively prevents silica gel to take in system below, reduces silica gel Consume, silica gel consumption drops to 3.1kg/t from 7.5kg/t, while improve the quality of product；

2nd, the usage cycles of primary cyclone are improve, it is not necessary to the parking process for taking place frequently；

3rd, employee labour is reduced, reduces external coordination resource, reduce human cost.

Description of the drawings：

Fig. 1 is structural representation of the present utility model；

Fig. 2 is the A direction views in Fig. 1；

Fig. 3 is the structural representation of the cyclone separation system of Fig. 1.

Specific embodiment：

As shown in figure 1, fluid bed air-out port separation apparatus in a kind of Melamine Production, it includes fluid bed tank body 1, Bottom in fluid bed tank body 1 is provided with molten salt heater 2, and the middle part level in the top fluid bed tank body 1 of molten salt heater 2 sets There is base plate 6, one group of pore 6a is evenly equipped with base plate 6.

Air outlet 1a, a cone in air outlet 1a lower ends and fluid bed tank body 1 are provided with the top of fluid bed tank body 1 Knockout drum 3 be connected, and at the middle part of the inner chamber of knockout drum 3, level is provided with skimming net 3a made by a stainless steel, in skimming A stainless baffle plate 3b is provided with the position of net 3a tops interval one end distance, and described baffle plate 3b is arch.

As shown in Fig. 28 cyclone separation systems 4 are evenly equipped with the outer wall of knockout drum 3, and two adjacent whirlwind point 45 ° of angle is equipped between system 4.

As shown in figure 3, described cyclone separation system 4 includes, primary cyclone 4a, in primary cyclone 4a Side is provided with air inlet a, and in primary cyclone 4a opposite sides the second cyclone separator 4b, the second cyclonic separation are communicated with Device 4b is connected by pipeline b with knockout drum 3.

A pipeline 4c for extending downwardly from, the bottom of pipeline 4c are provided with described each primary cyclone 4a bottoms After being passed down through base plate 6, bipyramid plug 4d is provided with its end, described bipyramid plug 4d is located at the lower section of base plate 6.

A pipeline 4c for extending downwardly from is provided with each described two cyclone separator 4b bottom, the bottom of pipeline 4c sets There are the excessive valve 4f of separator, the excessive valve 4f of described separator to be respectively positioned on the top of base plate 6.

A tracheae 5 being provided with straight down in the bottom of knockout drum 3, in the end of tracheae 5 excessive valve 5a being provided with, described overflows Valve 5a also is located at the top of base plate 6.

Operation principle：

400 DEG C of high temperature gas flows that urea is produced in fluid bed tank body 1 by molten salt heater 2 and catalyst silica gel it is common Effect issues heat solution, polymerization, produces melamine processes gas.Melamine processes gas passes through primary cyclone 4a sides Air inlet a is provided with primary cyclone 4a, first order separation is carried out.

The silica gel that the first order is isolated returns to the lower section of base plate 6 by bipyramid plug 4d, continues in the internal reference of fluid bed tank body 1 Plus reaction, and other melamine processes gas carry out second level separation then and then in the second cyclone separator 4b.

The silica gel that the second level is isolated is overflow by separator, and valve 4f is interior to discharge, and continues to be participated in fluid bed tank body 1 and reacts, And other melamine processes gas then carry out third level separation by pipeline b in knockout drum 3.

At this moment contained silica gel is than sparser in the melamine processes gas for entering in knockout drum 3, then through skimming Net 3a filtrations and the stop of baffle plate 3b, silica gel drops into the bottom of knockout drum 3, and is excluded by tracheae 5 and excessive valve 5a Knockout drum 3, continues to participate in reaction in fluid bed tank body 1.

At this moment melamine processes gas more pure in knockout drum 3 leaves fluid bed tank body 1 and enters just by air outlet 1a Enter next process.

Claims (4)

1. fluid bed air-out port separation apparatus in a kind of Melamine Production, it includes fluid bed tank body（1）, in fluid bed tank body （1）Interior bottom is provided with molten salt heater（2）, in fluid bed tank body（1）Top is provided with air outlet（1a）, it is characterised in that： Fluid bed tank body（1）Inside there is a knockout drum（3）, knockout drum（3）One end and air outlet（1a）It is connected, in knockout drum（3） On be evenly equipped with one group of cyclone separation system（4）, in knockout drum（3）On be additionally provided with a tracheae（5）, in tracheae（5）End set There is excessive valve（5a）.

2. according to fluid bed air-out port separation apparatus in a kind of Melamine Production described in claim 1, it is characterised in that： Described knockout drum（3）For cone, and in knockout drum（3）Inside it is provided with skimming net（3a）, in skimming net（3a）Top is provided with gear Plate（3b）.

3. according to fluid bed air-out port separation apparatus in a kind of Melamine Production described in claim 1, it is characterised in that： One group of described cyclone separation system（4）45 ° of angle is equipped between two cyclone separation systems for 8 and adjacent.

4. according to fluid bed air-out port separation apparatus in a kind of Melamine Production described in claim 1, it is characterised in that： Described cyclone separation system（4）Including primary cyclone（4a）, in primary cyclone（4a）Side is provided with air inlet Mouth a, in primary cyclone（4a）Opposite side is communicated with the second cyclone separator（4b）, the second cyclone separator（4b）It is logical Piping b and knockout drum（3）Connection.