TWI686363B - Textile sludge reproduction-based light-weight pellet material, preparation method and manufacturing system thereof - Google Patents

Abstract

The invention relates a textile sludge reproduction-based light-weight pellet material, a preparation method and manufacturing system thereof; particularly relating to a method for manufacturing a pulp sludge reproduction-based light-weight pellet material, which comprises mixing a raw material consisting of a textile sludge, an additive containing silicon aluminate and the like in a suitable ratio, and then adding water to be granulated into a green pellet ball in a half-dry state, and further fired it into a light-weight pellet material through a thermal processing in a rotary kiln. Because of utilizing the rotary kiln apparatus system and molten sintering curing process in the present invention, an organic substance of the textile sludge can be removed, accordingly not only a thermal energy is provided but also pores stably existed in glass-solidified material are formed. Further, through an additive containing silicon aluminate mixed in the glassy melt solution formed at high temperature, a light-weight pellet material being light and having properties of heat-insulating, fire-proof and the like, as well as being able to be used in the construction projects is formed so that the purpose of recycling waste is achieved.

Description

Textile sludge reconstituted light weight material, its manufacturing method and its manufacturing system

The present invention relates to a method for manufacturing light-weight pellets from textile sludge, its manufacturing method and manufacturing system. The "method for manufacturing light-weight pellets from textile sludge" is designed to sinter and solidify using rotary kiln system equipment The method is to produce light-weight materials, which can effectively recycle textile sludge into light-weight materials, and can produce light-weight materials with high economic value to provide applications such as construction materials, gardening and filter materials.

The sediments produced by the wastewater treatment system in the textile industry process are collectively called textile sludge. Depending on the location and nature of the process, it can be divided into two categories: organic sludge (hereinafter referred to as textile organic sludge) and inorganic sludge (hereinafter referred to as textile inorganic sludge). According to the different attributes and contents of various textile sludges, each has its own treatment method, and according to the domestic treatment status, textile sludge is stipulated by the Environmental Protection Agency "Announcement that waste should be recycled or reused (R-0906) However, it can also be classified as "general business waste (D-0901 or D-0902 or D-0999)" according to the needs of the industry, and all textile sludge can be reused.

The textile sludge discharged from the wastewater treatment system is in a soft state and has a high water content. Therefore, in order to achieve the purpose of reduction, stabilization and recycling, it is usually dehydrated by dehydration equipment After that, the moisture content of textile sludge can be reduced to about 50% to 70%.

Using textile organic sludge as auxiliary fuel for boilers is currently a common method for processing textile organic sludge, because this method is not complicated, and it can be removed and reduced in volume. However, before reuse of textile organic sludge, due to the retention of high water content and organic matter, there are still odor problems, energy consumption, and the problem of ash and slag waste after being used as auxiliary fuel for boilers. In addition, textile inorganic sludge is mostly buried, and other recycling methods are not common.

According to the research and development achievements of the present invention, it is considered that the sintering and solidification method is a better resource recycling mode for textile sludge.

The sintering and solidification method is to mix the textile sludge to be treated with the material with aluminosilicate composition, and then granulate and sinter it at a high temperature of 1000~1250 ℃ to promote the thermal decomposition of organic matter in the textile sludge. Combustion and gasification, and inorganic substances form glassy solids, which are made into lightweight particles that can be used in construction projects. In addition, in this way, the maximum volume reduction rate can reach more than 1/2.

In summary, after the textile industry sludge generated by the textile industry in the wastewater treatment process is sintered and solidified, it can effectively achieve the purposes of volume reduction, volume reduction, odor elimination and waste recycling.

In view of the existing resource recycling and reuse treatment methods of textile sludge, the odor and ash residue problems still exist in the resourced products, the object of the present invention is to provide a method for manufacturing textile pellets to make light-weight pellets, which is Combining the mechanism of sintering and solidification method, the textile sludge can be made into a lightweight material with high economic value, so as to expand and provide a variety of waste recycling methods.

In order to achieve the above object, the manufacturing method of the textile sludge recycled light weight material of the present invention includes the preparation step of the masterbatch mixture: put the dried textile sludge and additives into the mixing unit, and then add water to mix to form a moisture content of 15 Masterbatch mixture in the range of %~35%; granulation step: putting the masterbatch mixture into the granulation unit to make a raw material ball with a particle size distribution of 5-20 mm; and firing step: mixing the raw material The balls are transported to the firing unit for low-temperature stage firing and high-temperature stage firing in order to obtain light-weight pellets. The particle density lightweight textile reconstituted sludge pellets is in the range of 0.3 ~ 1.8g / cm ³ of.

According to an embodiment of the present invention, the textile sludge can be divided into organic sludge and inorganic sludge, and the weight ratio of the textile sludge to the additive is not particularly limited, for example, preferably 15 wt%: 85 wt%~25 wt%: the range of 75 wt%. Moreover, the weight of the textile sludge relative to the additive is preferably in the range of 15 wt%: 85 wt%~25.5 wt%: 74.5 wt%; more preferably, it is in the range of 15 wt%: 85 wt%~26.0 wt% : 74.0 wt%; the best is in the range of 15 wt%: 85 wt%~26.5 wt%: 73.5 wt%.

In addition, according to one technical idea of the present invention, substances suitable for use as additives include at least aluminosilicates, aluminosilicate-containing crystals, aluminosilicate precursors, alkali metal oxides, and raw materials thereof For example, reservoir sludge, water purification sludge, stone processing sludge, clay, fly ash, hearthstone powder, river sludge, kaolin, granite powder, brick powder, marble powder or a combination of these. According to an embodiment of the present invention, the additive is preferably a substance containing at least aluminosilicate, for example, it may be selected from reservoir sludge, water purification sludge, stone processing sludge, clay, and Any of its mixtures.

According to an embodiment of the present invention, the conditions of the low-temperature firing are: raising the temperature from the first temperature (T1) to the second temperature (T2) in a first predetermined time interval (t1), and the rotation speed is at 1 The range of ~6rpm; the conditions of the high-temperature firing are: the second predetermined time interval (t2), the temperature is raised from the third temperature (T3) to the fourth temperature (T4), and the rotation speed is between 1~4rpm range. In addition, according to an embodiment of the present invention, firing in the low temperature stage further includes holding at the second temperature (T2) for X minutes; and firing in the high temperature stage further includes maintaining at the fourth temperature (T4) for Y minute. Moreover, X, and Y are not particularly limited, and the two may be the same or different; for example, X, and Y may be in the range of 5 to 30, preferably 5 to 28 The better range is 5 to 25, and the best range is 5 to 22. Furthermore, t1, t2, T1, T2, T3, and T4 meet the following relationship: 15 min≦t1≦60 min, 25 min≦t2≦50 min, and 0.6≦t1/t2≦2.4; 40℃≦T1≦700℃, 40℃≦T2≦700℃, and T1≦T2; 600℃≦T3≦1250℃, 600℃≦T4≦1250℃, and T3≦T4.

According to an embodiment of the present invention, the first predetermined time interval (t1) and the second predetermined time interval (t2) may be the same or different, and are not particularly limited. For example, for example, the lower limit of t1 is preferably 15 minutes or more, more preferably 16 minutes or more, and the best is 17 minutes or more; on the other hand, the lower limit of t2 is preferably 25 minutes or more, more The best is 26 minutes or more, and the best is 27 minutes or more.

Secondly, according to an embodiment of the present invention, the upper limit of the first predetermined time interval (t1) is preferably 60 minutes or less, more preferably 59 minutes or less, and most preferably 58 minutes or less; on the other hand, The upper limit of the second predetermined time interval (t2) is preferably 50 minutes or less, more preferably 49 minutes or less, and most preferably 48 minutes or less.

Furthermore, according to an embodiment of the present invention, the first predetermined time interval (t1) and the second predetermined time interval (t2) are not particularly limited. For example, for example, the first predetermined time interval (t1) and the second predetermined time interval (t2) should preferably satisfy the relationship of 0.6≦t1/t2≦2.4, preferably 0.6≦t1/t2≦2.35 The relational expression is more preferably a relational expression satisfying 0.6≦t1/t2≦2.30, and the best is a relational expression satisfying 0.6≦t1/t2≦2.25.

According to an embodiment of the present invention, the first temperature (T1) and the second temperature (T2) in the low temperature stage are not particularly limited, and the two may be the same or different. For example, for example, the first temperature (T1) is preferably in the range of 40°C to 700°C, preferably in the range of 40°C to 690°C, more preferably in the range of 40°C to 680°C, and most The preferred range is 40°C to 670°C. On the other hand, the second temperature (T2) is preferably in the range of 40°C to 700°C, preferably in the range of 40°C to 690°C, more preferably in the range of 40°C to 680°C, most preferably It is in the range of 40°C to 670°C. In addition, the temperature difference between the first temperature (T1) and the second temperature (T2) is not particularly limited. For example, for example, the value of (T2-T1) may be above 50°C, preferably 100 ℃, the better is above 150 ℃, the best is above 200 ℃.

According to an embodiment of the present invention, the third temperature (T3) and the fourth temperature (T4) in the high temperature stage are not particularly limited, and the two may be the same or different. For example, for example, the third temperature (T3) is preferably in the range of 600°C to 1250°C, preferably in the range of 600°C to 1240°C, more preferably in the range of 600°C to 1230°C, most preferably The range is 600°C to 1220°C. On the other hand, the fourth temperature (T4) is preferably in the range of 600°C to 1250°C, preferably in the range of 600°C to 1240°C, more preferably in the range of 600°C to 1230°C, and most preferably In the range of 600 ℃ to 1220 ℃. In addition, the temperature difference between the third temperature (T3) and the fourth temperature (T4) is not particularly limited. For example, for example, the value of (T4-T3) may be above 50°C, preferably 100 ℃, the better is above 150 ℃, the best is above 200 ℃.

According to an embodiment of the present invention, after the firing step, a cooling step is further included: the light-weight pellet obtained in the firing step is cooled and annealed.

Preferably, the textile sludge is textile organic sludge, and the non-aqueous part of the mixture contains the following components: silicon dioxide 49-75 wt%, aluminum oxide 15-28 wt%, three Ferrous oxide>3 wt%, calcium oxide>1 wt%, magnesium oxide>1 wt%, sodium oxide>1 wt%, potassium oxide>1.5 wt%, organic matter>10 wt%, the above ratio is the proportion of each component in the mixture The weight percentage of the non-water content in the material.

Preferably, the textile sludge is textile inorganic sludge, and the non-aqueous part of the mixture contains the following components: silicon dioxide 50~70 wt%, aluminum oxide 18~30 wt%, three Ferrous oxide 3~10 wt%, calcium oxide>1 wt%, magnesium oxide>1 wt%, sodium oxide>1 wt%, potassium oxide>1 wt%, organic matter 3~8 wt%, the above proportions are for each component It is the weight percentage of the non-water content in the mixture.

Preferably, the masterbatch mixture further contains the dust recovered in the firing step.

In addition, the present invention can also provide a system for manufacturing light weight pellets from textile sludge, which at least includes: a mixing unit for mixing the dried textile sludge powder and additives with water to form a masterbatch mixture; A granulation unit, which is arranged at the downstream end of the mixing unit, is used to receive the masterbatch mixture from the mixing unit and granulate to form a raw meal ball; and a firing unit, which at least includes a double-cylinder rotary kiln , And monitoring device; wherein the double-barrel rotary kiln is formed by the drying preheating kiln and the roasting kiln connected in series, and the drying preheating kiln and the roasting kiln are independently provided with temperature regulating mechanisms and Rotating speed adjustment mechanism; the feed inlet of the drying preheating kiln is provided at the downstream end of the granulation unit to receive the raw material ball from the granulation unit and perform low-temperature firing; the roasting kiln receives from the Drying the raw pellets of the preheating kiln and firing at a high temperature stage to obtain light pellets; the monitoring device is electrically connected to the temperature adjustment mechanisms and the rotation speed adjustment mechanisms to detect and control the Temperature and rotational speed in the drying preheating kiln and the roasting kiln.

According to an embodiment of the present invention, the double-cylinder rotary kiln is further provided with an angle adjustment mechanism, and the angle adjustment mechanism is electrically connected to the monitoring device to adjust the inclination angle of the double-cylinder rotary kiln.

According to an embodiment of the present invention, the drying preheating kiln and the roasting kiln are respectively provided with gas regulating mechanisms, and the gas regulating mechanisms are electrically connected to the monitoring device to detect and adjust the drying preheating The gas composition ratio in the kiln and the roasting kiln.

According to an embodiment of the present invention, the manufacturing system of the textile sludge recycled light weight material further includes a drying unit and a powdering unit, the drying unit is disposed at the most of the textile sludge recycled light weight material manufacturing system The front end is used to remove the moisture in the textile sludge and/or the additive; the pulverizing unit is arranged between the drying unit and the mixing unit for the drying of the textile sludge and/or the additive Crushed into pieces and ground into powder.

According to an embodiment of the invention, the monitoring device is a microprocessor or a computer.

The specific effects that can be achieved by the present invention include: the present invention adds aluminosilicate-containing additives to textile sludge, and then burns them into light-weight pellets in a rotary kiln through a heat treatment process. The generated vitreous body and foaming gas, as well as the porosity of the organic matter burned into it, are made into small pores throughout, which can be used in construction projects, horticultural planting, or filter materials.

In the following, different specific embodiments are listed and described in detail for the implementation of the present invention, so as to make the spirit and content of the present invention more complete and easy to understand; however, those with ordinary knowledge in this skill should understand The present invention is of course not limited to these examples, and other identical or equal functions and sequence of steps can be used to achieve the invention.

In this document, the meanings of the scientific and technical words used herein are the same as those understood and used by those with ordinary knowledge in the technical field to which the present invention belongs. In addition, without conflicting with the context, the singular noun used in this specification covers the plural form of the noun; and the plural noun used also covers the singular form of the noun.

In this article, the values and parameters used to define the scope of the present invention inevitably contain the standard deviation due to individual test methods, so most of them are expressed by approximate numerical values, but in specific embodiments Relevant values presented as accurately as possible. In this article, "about" generally depends on the consideration of those with ordinary knowledge in the technical field to which the present invention belongs, and generally means that the actual value falls within the acceptable standard error of the average value, for example, the actual value is Within ±10%, ±5%, ±1%, or ±0.5% of a specific value or range.

In the embodiments of the present invention, textile sludge and additives containing at least aluminosilicate are used as the raw materials for the composition of the light-weight particles; the textile sludge may be textile organic sludge or textile inorganic sludge. Additives containing aluminosilicates have the effects of fluxing, foaming and thickening, such as reservoir sludge, water purification sludge, stone processing sludge, clay and other materials.

Please 參As shown in FIG. 1, the preferred implementation of the present invention includes the following steps:

Masterbatch mixture preparation step S1: Put the dried textile sludge and additives into the mixing unit, and then add water to mix to form a masterbatch mixture with a moisture content ranging from 15% to 35%.

Granulation step S2: The master batch mixture is put into a granulation unit to make a raw material ball with a particle size distribution in the range of 5-20 mm.

Firing step S3: The raw material ball is transported to the firing unit for low-temperature stage firing and high-temperature stage firing in order to obtain light-weight pellets.

According to another embodiment of the present invention, before the master batch mixture preparation step S1, it may further include a raw material pretreatment step P1: drying the textile sludge and additives (here mainly reservoir sludge). Up to constant weight, preferably, the textile sludge and additives are transported to the dryer through a scraper to dry, the temperature of the dryer is between 95~105℃. Then, the dried textile sludge and additives are crushed into blocks; preferably, they are crushed into pieces by a jaw crusher; the crushed textile sludge and additives are separately ground into powder, and separately It is stored in the silo to which it belongs; preferably, it is finely ground into a powder with a median diameter D ₅₀ ≦30 microns (μm) by a ball mill.

Through the above raw material pretreatment step P1 of the homogenization treatment such as drying, crushing and grinding, the raw material is made into a homogeneous powder, which can be uniformly mixed in the subsequent master batch mixture preparation step S1 to ensure It can produce light-weight pellets with stable quality and excellent performance;

In the preparation step S1 of the master batch mixture, the milled textile sludge and additives are measured at an appropriate ratio, and then mixed with water to form a mixture with a moisture content of 15% to 35%, so that the mixture The non-aqueous portion (that is, the mixed solids of textile sludge and additives) may have a specific preferred percentage of chemical composition. The mixed material can have two sets of formula design. The first group is the textile organic sludge series, which is only a mixture of milled textile organic sludge and additives and water to form a mixed material; the second group is textile inorganic sludge Series, it is only mixed with textile inorganic sludge after grinding and additives and water to form a mixture. The principle of formula design of the above two groups, according to the weight of the non-aqueous parts of textile organic sludge, textile inorganic sludge and additives used, are adjusted in appropriate proportions to the required weight percentage of each formula, as shown in Table 1:

Table 1

The procedure of mixing ingredients can be measured according to the formula shown in Table 1, and the ingredients are weighed by the electronic scale attached to the conveyor belt, and then mixed with water by a double-shaft mixer to be homogenized before being granulated.

Next, in the granulation step S2: the masterbatch mixture is made into a continuous gradation of 5 to 20 mm spherical raw material balls; preferably, the mixed material after the mixing is completed by a conveyor belt It is transported to the granulator for granulation, and the granulation method adopts the wet balling method to avoid dust flying, and implements environmentally friendly clean production;

In the firing step S3, the raw pellets are transported to the rotary kiln to be burned into light pellets. The highest furnace temperature used for firing is between 1000~1250°C, which can be different according to different recipes. It is fired according to the pre-set firing curve. The exhaust gas of the rotary kiln must be desulfurized and dedusted by air pollution control equipment to meet the national air pollution control standards, which are obtained by desulfurization and dust removal. The recovered dust can also be reused in the production of light-weight materials and mixed with textile sludge and additives in the mixing step;

Furthermore, the raw material ball is sequentially fired at a low temperature stage and fired at a high temperature stage in the firing unit. The firing conditions for the low temperature stage are: raising the temperature from the first temperature (T1) to the second temperature (T2) in the first predetermined time interval (t1), and the rotation speed is in the range of 1 to 6 rpm; the high temperature stage The firing conditions are: raising the temperature from the third temperature (T3) to the fourth temperature (T4) in the second predetermined time interval (t2), and the rotation speed is in the range of 1 to 4 rpm; and t1, t2, T1 , T2, T3, T4 are in accordance with the following relationship: 15 min≦t1≦60 min, 25 min≦t2≦50 min, and 0.6≦t1/t2≦2.4; 40℃≦T1≦700℃, 40℃≦T2≦700℃, and T1≦T2; 600℃≦T3≦1250℃, 600℃≦T4≦1250℃, and T3≦T4.

In addition, in another embodiment of the present invention, after the firing step S3, a cooling step S4 is further included: the fired light pellets are cooled and annealed; preferably, the light pellets It is cooled and annealed according to the pre-set chill curve using a cooler. In addition, after the cooling step S5, it may further include a screening and grading step S6: after cooling, the light weight pellets are sorted and stored according to their unit weight and particle size, etc. Before the light pellets leave the factory, It must also meet the National Standards of the Republic of China (CNS) as stipulated by the country, and then become finished products that can be sold out of the factory.

Corresponding to the manufacturing method of the textile sludge recycled light pellet material described above, the present invention provides a textile sludge recycled light pellet material manufacturing system, please refer to FIG. 2, which shows the creation of the textile sludge recycled light pellet material Schematic diagram of the structure of the material manufacturing system. The manufacturing system of the textile sludge recycled light weight material includes a mixing unit 1, a granulation unit 2, and a firing unit 3; the granulation unit 2 is provided in the mixing unit 1 The downstream end, and the firing unit 3 is provided at the downstream end of the granulation unit 2.

According to the technical idea of this creation, the mixing unit 1 is used to mix dry textile sludge powder and additives with water to form a masterbatch mixture, and the mixing unit may be any known mixing equipment; for example In general, it can be a flat-wing vortex 輪, circular plate vortex 輪, wedge-shaped wing, or any type of vortex mixing equipment, preferably a twin-shaft helical mixer.

The granulation unit 2 is used to receive the masterbatch mixture from the mixing unit 1 and granulate to form a raw material ball. The granulation unit 2 can be designed for a horizontal cylindrical granulation structure and installed in the front section The conveying device (not shown) is provided. The conveying device is used to receive the masterbatch mixture in the mixing unit 1, and can be screwed to push the masterbatch mixture to the granulation unit 2, and according to The output of the upstream mixing unit 1 is controlled to adjust the feed to avoid affecting the granulation effect; wherein the granulation unit 2 is equipped with a stirring mechanism, which is provided with a rotating shaft for the cylindrical center of the granulation unit 2 and passes through the motor Driven to rotate, a number of stirring elements are arranged on the periphery of the rotating shaft, and the stirring elements are arranged in a double spiral at equal intervals, so that the rotating shaft is driven to rotate, and a sprinkler is arranged at the front end of the granulation unit 2 It can be used to spray water into the machine to spray granulation of the masterbatch mixture at the same time, to avoid flying dust, and implement a clean production that is environmentally friendly.

In addition, the firing unit 3 includes at least a double-tube rotary kiln 31 and a monitoring device 32. The double-barrel rotary kiln 31 is formed by the drying preheating kiln and the roasting kiln connected in series, and the drying preheating kiln and the roasting kiln are independently provided with a temperature regulating mechanism and a speed regulating mechanism (not (Illustration), by which the rotational speed of the drying preheating kiln and the roasting kiln and the temperature rising curve during heating in the kiln can be set separately; the inlet of the drying preheating kiln is provided downstream of the granulation unit 2 End, for receiving the green pellets from the granulation unit 2 and performing the first stage firing; the roasting kiln receives the green pellets from the drying and preheating kiln and performs the second stage firing.

According to the technical idea of the present creation, the monitoring device 32 is electrically connected to the temperature adjustment mechanisms and the rotation speed adjustment mechanisms to detect and control the temperature in the drying preheating kiln 311 and the roasting kiln 312 And speed. The monitoring device 32 can be a microprocessor or a computer.

In addition, in another embodiment of the present invention, the double-cylinder rotary kiln 31 may be further provided with an angle adjustment mechanism (not shown), which is electrically connected to the monitoring device to adjust the rotation of the double-cylinder The tilt angle of the kiln 31. The inclination angle of the double-tube rotary kiln 31 can be set arbitrarily within the range of 0~20, by which the residence time of the raw meal balls in the drying and preheating kiln can be adjusted, and the raw meal balls can be transported into the roasting kiln 312 .

As mentioned above, the drying and preheating kiln and the roasting kiln can be further provided with gas regulating mechanisms, which are electrically connected to the monitoring device 32 for detecting and adjusting the drying and preheating kiln , And the gas composition ratio in the roasting kiln.

In addition, the double-tube rotary kiln 31 of the present invention further includes a temperature sensor and an angle sensor. The temperature sensor senses the temperature of the drying preheating kiln 4 and the roasting kiln 5 and transmits it to the monitoring device 32. , The angle sensor detects the rotation angle of the drying preheating kiln 4 and the roasting kiln 5 and sends it to the monitoring device 32. The monitoring device 32 controls the heater of the double-tube rotary kiln 31 according to the set temperature curve and the detected temperature The heating temperature of the monitoring device 32 further includes a control panel. The control panel is provided with a plurality of control buttons and numeric input buttons to set the temperature curve and the predetermined rotation angle. The control panel is also provided with a display device for displaying The temperature and angle of the drying preheating kiln 4 and roasting kiln 5. In addition, the monitoring device 32 further includes a wireless transceiver unit, which can be connected to a remote controller or a portable device via a wireless network, and an operation interface can be installed on the remote controller or the portable device, and the user can remotely A remote controller or a portable device is used to transmit control signals to the monitoring device 32, and to monitor the status of the double-tube rotary kiln 31.

Next, please refer to FIG. 3, which is a system architecture diagram showing another embodiment of the manufacturing system of the textile sludge recycled light weight material of the present creation. In this embodiment, the manufacturing system of the textile sludge recycled light weight material further includes a drying unit 4 and a powdering unit 5. The drying unit 4 is disposed at the forefront of the manufacturing system of the textile sludge to regenerate light-weight materials, and is used to remove moisture from the textile sludge and/or the additive, and the powdering unit 5 is disposed at the drying The unit 4 and the mixing unit 1 are used to receive the dried textile sludge and/or the additive from the drying unit 4 into pieces and grind them into powder.

The pulverizing unit 5 includes a jaw crusher 51 and a ball mill 52; the jaw crusher 51 is used to crush the dried and excessively thick textile sludge and/or the additive into pieces and send it to the ball mill 53 for fine Grinding to obtain a dry powder with a median diameter D ₅₀ ≦30 μm.

Also, please refer to FIG. 3 again, the manufacturing system of the textile sludge to regenerate the light weight material may further include a cooling unit 6 disposed at the downstream end of the firing unit 3 for cooling the light weight Pellets.

In the following, the specific examples are used to explain the manufacturing method of the textile sludge recycled light-weight pellets, and the properties of water absorption, particle density and strength are analyzed.

In addition, the manufacturing system of high-performance sludge recycled light pellets further includes a system information control center 8, which is connected to the mixing unit 1, filter press unit 2, drying unit 3, granulation unit 4, burning System 5 and cooling unit 6, and the system information control center 8 is connected to a cloud database 9 via a network, mixing unit 1, filter unit 2, drying unit 3, granulation unit 4, firing unit 5 , The manufacturing parameters of the cooling unit 6 and the screening unit 7 can be sent to the system information control center 8, the system information control center 8 can be sent to the control signal to the mixing unit 1, filter press unit 2, drying unit 3, granulation unit 4. The firing unit 5, the cooling unit 6, and the screening unit 7. The cloud database 9 can analyze the data of each unit and provide the best control mode for the system information control center 8. "Example 1-2"

In Examples 1 and 2, textile organic sludge, textile inorganic sludge, and additives (in this example, reservoir sludge) were dried, crushed, and ground in the ratios shown in Table 2 below, and then Add fresh water and mix to obtain a masterbatch mixture. The water content of the masterbatch mixture is between 15% and 25%.

The master batch mixture is transported to a disc granulator by a conveyor belt for granulation, and a continuous gradation of 5-15 mm lumpy raw material balls is made.

Then, the raw material pellets were put into a double-tube rotary kiln at a temperature, temperature rise time, and rotation speed as shown in Table 2 to perform low-temperature stage firing and high-temperature stage firing in order to obtain light pellets M1 and M2.

After cooling and annealing the light-weight pellets M1 and M2, product physical properties were analyzed, and the obtained results are recorded in Table 2.

Table 2

It can be found from the results in Table 2 that the light bulk material M1 prepared in Example 1 of the present invention has a loose unit weight of 450 to 800 kg/m ³ , a particle density of 0.9 to 1.6 g/cm ³ , and a water absorption rate of 12~15%, and the tube compression strength is 3~8Mpa, suitable for use in construction projects or horticultural planting materials.

In addition, the bulk weight of the light weight pellet M2 prepared in Example 2 of the present invention is 400-650 kg/m ³ , the particle density is 0.7-1.4 g/cm ³ , and the water absorption rate is 18-25%, and The cylinder compression strength is <3 Mpa, suitable for use as a non-structural engineering material or filter material.

The preferred embodiment of the present invention is to mix raw materials such as textile sludge, aluminosilicate-containing additives and so on to a specific weight percentage, and add water to granulate them into a semi-dry raw meal ball. Then through the heat treatment process, it is fired into a light weight pellet in a rotary kiln. Because the preferred embodiment of the present invention utilizes rotary kiln system equipment to thermally decompose, burn and gasify the organic matter in the textile sludge by means of sintering and solidification, and the inorganic matter forms a glassy solid, and then by The high temperature containing aluminosilicate additives generates foaming gas, which is made into small pores throughout, which can be applied to light weight materials for construction projects.

In summary, the preferred embodiment of the present invention is in addition to the resources that can effectively treat textile sludge, and the light-weight pellets obtained from it can also obtain rich economic benefits, which are of great significance to the country's livelihood, construction and environmental protection. Positive meaning. However, the above implementation description, drawings and tables show that it is one of the preferred embodiments of the present invention, which does not limit the present invention in this way, so that it is similar to and similar to the structure, device, and characteristics of the present invention. All of them should be within the scope of the invention and the scope of patent application.

P1, S1~S5: Step 1: mixing unit 2: granulation unit 3: firing unit 31: Double barrel rotary kiln 32: monitoring device 4: Drying unit 5: Milling unit 51: Jaw crusher 52: Ball mill 6: Cooling unit 8: System Information Control Center 9: Cloud database

FIG. 1 is a flow chart showing an embodiment of a method for manufacturing a light-weight pellet from textile sludge of the present invention FIG. 2 is a system architecture diagram showing an embodiment of a manufacturing system of textile sludge recycled light weight material according to the present invention. FIG. 3 is a system architecture diagram showing another embodiment of the manufacturing system of the textile sludge recycled light weight material of the present invention.

P1, S1~S5: Step

Claims (10)

A method for making light-weight pellets from textile sludge, which includes: Preparation step of masterbatch mixture: Put the dried textile sludge and additives into the mixing unit, and then add water to mix to form a masterbatch mixture with a moisture content in the range of 15% to 35%; Granulation step: the masterbatch mixture is put into a granulation unit to make a raw material ball with a particle size distribution of 5-20 mm; and Firing step: The raw material ball is transported to the firing unit for low-temperature stage firing and high-temperature stage firing in order to obtain light-weight pellets; The weight ratio of the textile sludge to the additive is in the range of 15 wt%: 85 wt%~25 wt%: 75 wt%; The additive contains at least aluminosilicate; The conditions for the low-temperature firing are: raising the temperature from the first temperature (T1) to the second temperature (T2) in the first predetermined time interval (t1); The conditions for the high-temperature firing are: raising the temperature from the third temperature (T3) to the fourth temperature (T4) in the second predetermined time interval (t2); and t1, t2, T1, T2, T3, T4 respectively meet the following relationship: 15 min≦t1≦60 min, 25 min≦t2≦50 min, and 0.6≦t1/t2≦2.4; 40℃≦T1≦700℃, 40℃≦T2≦700℃, and T1≦T2; 600℃≦T3≦1250℃, 600℃≦T4≦1250℃, and T3≦T4. The method for producing a light-weight pellet from textile sludge as recited in claim 1, wherein after the firing step, a cooling step is further included: the light-weight pellet obtained in the firing step is cooled and annealed. The method for producing light-weight pellets from textile sludge as described in claim 1, wherein the textile sludge is organic sludge, and the non-aqueous portion of the masterbatch mixture contains the following components: silicon dioxide 49 ~75wt%, aluminum oxide 15~28wt%, ferric oxide>3wt%, calcium oxide>1wt%, magnesium oxide>1wt%, sodium oxide>1wt%, potassium oxide>1.5wt%, organic matter>10wt% The above ratio is the weight percentage of each component in the non-aqueous portion of the mixture. The method for producing light-weight pellets from textile sludge as described in claim 1, wherein the textile sludge is inorganic sludge, and the non-aqueous portion of the masterbatch mixture contains the following components: silica 50 ~70wt%, aluminum oxide 18~30wt%, ferric oxide 3~10wt%, calcium oxide>1wt%, magnesium oxide>1wt%, sodium oxide>1wt%, potassium oxide>1wt%, organic matter 3~8wt %, the above ratio is the weight percentage of each component in the non-water content of the mixture. The method for manufacturing a light-weight granulated material of textile sludge as recited in claim 1, wherein the additive is any one selected from reservoir sludge, water purification sludge, stone processing sludge, clay, and mixtures thereof. The manufacturing method of the reclaimed light weight material of textile sludge as described in claim 1, wherein the light weight material is used for construction engineering, horticultural planting, non-structural engineering, or filter material. A system for manufacturing light-weight pellets from textile sludge, which includes at least: A drying unit, which is arranged at the forefront of the manufacturing system of the textile sludge to regenerate the light weight material, and is used to remove the moisture in the textile sludge and/or the additive; A powdering unit, which is arranged between the drying unit and the mixing unit, is used to break the dried textile sludge and/or the additive into pieces and grind them into powder; Mixing unit for mixing dry textile sludge powder and additives with water to form a masterbatch mixture; A granulation unit, which is provided at the downstream end of the mixing unit, for receiving the masterbatch mixture from the mixing unit and granulating to form a green pellet; and The firing unit, which contains at least a double-tube rotary kiln and a monitoring device; The double-cylinder rotary kiln is composed of a drying preheating kiln and a roasting kiln connected in series, and the drying preheating kiln and the roasting kiln are independently provided with a temperature adjusting mechanism and a rotating speed adjusting mechanism; The feed inlet of the intervention heat kiln is provided at the downstream end of the granulation unit to receive the raw material balls from the granulation unit and perform low-temperature firing; the roasting kiln receives the raw material from the drying preheat kiln Raw material pellets are fired at high temperature to obtain light pellets; The monitoring device is electrically connected to the temperature adjustment mechanisms and the rotation speed adjustment mechanisms to detect and control the temperature and rotation speed in the drying preheating kiln and the roasting kiln. As described in claim 7, the manufacturing system of the textile sludge to regenerate light-weight materials, wherein the double-cylinder rotary kiln is further provided with an angle adjustment mechanism, the angle adjustment mechanism is electrically connected to the monitoring device for adjusting the double-cylinder The inclination angle of the rotary kiln, and the drying preheating kiln and the roasting kiln are respectively provided with gas regulating mechanisms, and the gas regulating mechanisms are electrically connected with the monitoring device to detect and adjust the drying preheating kiln , And the gas composition ratio in the roasting kiln. A light-weight pellet made from textile sludge, produced by the production method according to any one of claims 1 to 3 and 5 to 6, or using the manufacturing system according to any one of claims 7 to 8, characterized by The reason is that the light weight material of the textile sludge is suitable for filtering materials or horticultural planting, and the textile pressure of the light sewage is lighter than 3MPa and the particle density is 0.3~1.8g/cm ³ Scope. A light-weight pellet made from textile sludge, produced by the production method according to any one of claims 1 to 2 and 4 to 6, or using the manufacturing system according to any one of claims 7 to 8, and its characteristics The reason is that the recycled light weight material of textile sludge is suitable for horticultural planting or filtering materials, and the textile pressure of the recycled light weight of the recycled light weight is in the range of 3 to 8 MPa, and the particle density is in the range of 0.3 to 1.8 g/cm ³ range.

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