ZSM-5 molecular sieve production device

Abstract

The utility model relates to the technical field of molecular sieve production, in particular to a ZSM-5 molecular sieve production device. The ZSM-5 molecular sieve production device comprises a crystallization kettle, the crystallization kettle is connected with a first-crossing belt filter through a storage tank, the first-crossing belt filter is connected with a second-crossing belt filter through a first-crossing filter cake beating tank, the second-crossing belt filter is connected with an activation modification tank through a second-crossing filter cake beating tank, the activation modification tank is connected with a flash dryer, and the flash dryer is connected with a flash dryer. A steam outlet is formed in the activation modification tank, a steam-water separator is connected to the steam outlet, and the steam-water separator is located on the outer side of the activation modification tank. According to the device, through the arrangement of the steam-water separator, steam-water separation is carried out on steam before the steam enters the activation modification tank, so that the amount of steam condensate entering the activation modification tank is greatly reduced, and the modification efficiency is improved; the steam condensate separated by the steam-water separator is introduced into the water flushing port of the two-crossing belt filter to flush the slurry, so that the utilization rate of the steam condensate is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of molecular sieve production, in particular to a ZSM-5 molecular sieve production device. Background Art

[0002] The production process of ZSM-5 molecular sieve needs to go through several processes such as crystallization, filtration, activation modification, drying, roasting and grinding, and finally produce qualified ZSM-5 molecular sieve. Among them, the effect of activation modification plays a decisive role in the phosphorus pentoxide index of the molecular sieve product and the hydrothermal stability of the molecular sieve.

[0003] At present, when producing ZSM-5 molecular sieves, steam is needed to heat the materials in the modification stage. Since steam inevitably carries water, the water carried by the steam enters the modification system when the steam is used for heating, causing the water volume of the entire system to increase, and the water-silicon ratio to increase, which affects the modification effect and the flash feed drying effect, and further affects the quality of the molecular sieve products in the later stage. Although the post has taken measures such as long-term steam water cut-off before the temperature of the modified material is raised, the uncertainty of the amount of water carried by the steam may still cause too much water to be brought into the material when it is heated, affecting the modification effect. Utility Model Content

[0004] In view of the above deficiencies in the prior art, the purpose of the utility model is to provide a ZSM-5 molecular sieve production device. By setting a steam-water separator, steam is separated from the steam before entering the activation modification tank, which greatly reduces the amount of steam condensate entering the activation modification tank and improves the modification efficiency; the steam condensate separated by the steam-water separator is introduced into the water flushing port of the two-belt filter to flush the slurry, which greatly improves the utilization rate of the steam condensate.

[0005] The utility model is realized by adopting the following technical solutions:

[0006] The ZSM-5 molecular sieve production device comprises a crystallization kettle, which is connected to a cross-belt filter through a storage tank, the cross-belt filter is connected to a second cross-belt filter through a cross-filter cake beating tank, the second cross-belt filter is connected to an activation modification tank through two cross-filter cake beating tanks, the activation modification tank is connected to a flash dryer, a steam outlet is provided inside the activation modification tank, a steam outlet is connected to a steam separator, and the steam separator is located outside the activation modification tank.

[0007] The first cross-belt filter is mainly used for water washing and impurity removal of slurry; the second cross-belt filter is mainly used for acid washing and then water washing and impurity removal of slurry.

[0008] A feeding port for the cross-belt filter and a water flushing port for the cross-belt filter are arranged above the cross-belt filter, and the storage tank is connected with the feeding port for the cross-belt filter through a pipeline.

[0009] The water flushing port of the cross-belt filter is located near one side of a cross-filter cake beating tank.

[0010] The upper part of the two-belt filter is provided with a feed port for the two-belt filter, a pickling port for the two-belt filter, and a water flushing port for the two-belt filter in sequence, and a filter cake beating tank is connected to the feed port of the two-belt filter through a pipeline.

[0011] The water flushing port of the two-belt filter is located on one side close to the two-belt filter cake beating tank, and a scraping guide plate is provided between the two-belt filter and the two-belt filter cake beating tank. The scraping guide plate is used to guide the material and also to scrape off the attachments on the filter cloth of the two-belt filter, thereby improving the efficiency of the two-belt filter.

[0012] A pump for feeding the modification tank is arranged between the second cross filter cake beating tank and the activation modification tank, and a stirrer is arranged inside the activation modification tank.

[0013] The steam-water separator is connected to the water flushing port of the double-cross-belt filter through a steam condensate pump.

[0014] The addition of the steam-water separator reduces the amount of water carried by steam into the modification system, increases the modification effect, and thus improves the hydrothermal stability of the molecular sieve; the water separated by the steam-water separator can be reused in the two-belt filter to reduce water consumption and save water costs; it better improves the modification effect and production efficiency, and increases product output and quality.

[0015] The working principle of the utility model is:

[0016] After the raw materials react in the crystallization kettle, the slurry enters the storage tank, and then enters the first cross-belt filter through the feed port of the first cross-belt filter. The first cross-belt filter is started, and after the first cross-belt filter is washed and filtered, it enters the first cross-filter cake beating tank; then it enters the second cross-belt filter through the feed port of the second cross-belt filter, and after the second cross-belt filter is acid-washed and washed, it enters the second cross-filter cake beating tank, and then enters the activation modification tank through the modification tank pump, the agitator is started, and the steam enters the steam outlet through the steam-water separator. After the modification of the activation modification tank is completed, it enters the flash dryer for drying, and then it is dried, roasted and ground by a sand mill; the liquid phase separated by the steam-water separator enters the water washing port of the second cross-belt filter through the steam condensate pump to wash the slurry. Among them, the first cross-belt filter is mainly used for washing and impurity removal of slurry; the second cross-belt filter is mainly used for acid washing and then water washing of slurry.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model ZSM-5 molecular sieve production device is adopted. By setting the steam-water separator, the steam is separated from the water before entering the activation modification tank, which greatly reduces the amount of steam condensate entering the activation modification tank and improves the modification efficiency; the steam condensate separated by the steam-water separator is introduced into the water flushing port of the two-cross-belt filter to flush the slurry, which greatly improves the utilization rate of the steam condensate. The modification effect and production efficiency are better improved, and the product output and quality are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the ZSM-5 molecular sieve production device of the utility model;

[0020] In the figure: 1. Crystallization kettle; 2. Storage tank; 3. One cross-belt filter; 4. One cross-filter cake slurry tank; 5. Two cross-belt filters; 6. Two cross-filter cake slurry tank; 7. Activation modification tank; 8. Flash dryer; 9. Feed inlet of one cross-belt filter; 10. Water flushing inlet of one cross-belt filter; 11. Feed inlet of two cross-belt filters; 12. Pickling inlet of two cross-belt filters; 13. Water flushing inlet of two cross-belt filters; 14. Scrape guide plate; 15. Agitator; 16. Steam outlet; 17. Steam-water separator; 18. Steam condensate pump; 19. Inlet modification tank pump. DETAILED DESCRIPTION

[0021] In order to make the purpose and technical solution of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings.

[0022] Example 1

[0023] like Figure 1As shown, the ZSM-5 molecular sieve production device includes a crystallization kettle 1, which is connected to a cross-belt filter 3 through a storage tank 2, and the cross-belt filter 3 is connected to a second cross-belt filter 5 through a cross-filter cake beating tank 4, and the second cross-belt filter 5 is connected to an activation modification tank 7 through a second cross-filter cake beating tank 6, and the activation modification tank 7 is connected to a flash dryer 8. A steam outlet 16 is provided inside the activation modification tank 7, and a steam-water separator 17 is connected to the steam outlet 16, and the steam-water separator 17 is located outside the activation modification tank 7. The cross-belt filter 3 is mainly used for washing and removing impurities from the slurry; the second cross-belt filter 5 is mainly used for acid washing and then washing and removing impurities from the slurry. A cross-belt filter feed port 9 and a cross-belt filter water flushing port 10 are provided above the cross-belt filter 3, and the storage tank 2 is connected to the cross-belt filter feed port 9 through a pipeline. The water flushing port 10 of the first cross-belt filter is located on the side close to the first cross-filter cake beating tank 4. The second cross-belt filter feed port 11, the second cross-belt filter pickling port 12, and the second cross-belt filter water flushing port 13 are arranged above the second cross-belt filter 5 in sequence, and the first cross-filter cake beating tank 4 is connected to the feed port 11 of the second cross-belt filter through a pipeline. The water flushing port 13 of the second cross-belt filter is located on the side close to the second cross-filter cake beating tank 6, and a scraping guide plate 14 is arranged between the second cross-belt filter 5 and the second cross-filter cake beating tank 6. A modification tank inlet pump 19 is arranged between the second cross-filter cake beating tank 6 and the activation modification tank 7, and an agitator 15 is arranged inside the activation modification tank 7. The steam-water separator 17 is connected to the water flushing port 13 of the second cross-belt filter through a steam condensate pump 18.

[0024] The above-mentioned ZSM-5 molecular sieve production device, when in operation, comprises the following steps:

[0025] (1) After the raw materials react in the crystallization kettle 1, the slurry enters the storage tank 2, and then enters the first cross-belt filter 3 through the first cross-belt filter feed port 9, the first cross-belt filter 3 is started, and after the first cross-belt filter 3 is washed and filtered, it enters the first cross-filter cake slurry tank 4; (2) Then it enters the second cross-belt filter 5 through the second cross-belt filter feed port 11, after the second cross-belt filter 5 is acid-washed and washed, it enters the second cross-filter cake slurry tank 6, and then enters the activation modification tank 7 through the modification tank pump 19, the agitator 15 is started, and the steam enters the activation modification tank 7 through the steam-water separator 17. After the modification in the activation modification tank 7 is completed, it enters the flash dryer 8 for drying, and then it is dried, roasted and ground by a sand mill; (3) The liquid phase separated by the steam-water separator 17 enters the water flushing port 13 of the second cross-belt filter through the steam condensate pump 18 to rinse the slurry.

Claims

1. A ZSM-5 molecular sieve production device, characterized in that: The invention comprises a crystallization kettle (1), wherein the crystallization kettle (1) is connected to a cross-belt filter (3) through a storage tank (2), the cross-belt filter (3) is connected to a second cross-belt filter (5) through a cross-filter cake beating tank (4), the second cross-belt filter (5) is connected to an activation modification tank (7) through a second cross-filter cake beating tank (6), the activation modification tank (7) is connected to a flash dryer (8), a steam outlet (16) is provided inside the activation modification tank (7), a steam outlet (16) is connected to a steam-water separator (17), and the steam-water separator (17) is located outside the activation modification tank (7).

2. The ZSM-5 molecular sieve production device according to claim 1, characterized in that: A cross-belt filter feed port (9) and a cross-belt filter water flushing port (10) are provided above the cross-belt filter (3), and the storage tank (2) is connected to the cross-belt filter feed port (9) through a pipeline.

3. The ZSM-5 molecular sieve production device according to claim 2, characterized in that: The water flushing port (10) of the cross-belt filter is located close to a side of a cross-filter cake beating tank (4).

4. The ZSM-5 molecular sieve production device according to claim 1, characterized in that: A second cross-belt filter feed port (11), a second cross-belt filter acid washing port (12), and a second cross-belt filter water flushing port (13) are sequentially arranged above the two cross-belt filter (5), and a cross-filter cake beating tank (4) is connected to the second cross-belt filter feed port (11) through a pipeline.

5. The ZSM-5 molecular sieve production device according to claim 4, characterized in that: The water flushing port (13) of the double-belt filter is located on a side close to the double-belt filter cake beating tank (6), and a scraping guide plate (14) is provided between the double-belt filter (5) and the double-belt filter cake beating tank (6).

6. The ZSM-5 molecular sieve production device according to claim 1, characterized in that: A pump (19) for feeding the modification tank is arranged between the cross-filter cake beating tank (6) and the activation modification tank (7), and a stirrer (15) is arranged inside the activation modification tank (7).

7. The ZSM-5 molecular sieve production device according to claim 4, characterized in that: The steam-water separator (17) is connected to the water flushing port (13) of the double-belt filter through a steam condensate pump (18).

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